{"id":103848,"date":"2025-12-12T07:49:17","date_gmt":"2025-12-12T15:49:17","guid":{"rendered":"https:\/\/www.racingjunk.com\/news\/?p=103848"},"modified":"2025-12-23T12:08:12","modified_gmt":"2025-12-23T20:08:12","slug":"van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2","status":"publish","type":"post","link":"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/","title":{"rendered":"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2"},"content":{"rendered":"<div data-carousel-extra='{\"blog_id\":1,\"permalink\":\"https:\\\/\\\/www.racingjunk.com\\\/news\\\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\\\/\"}' id='gallery-1' class='gallery galleryid-103848 gallery-columns-3 gallery-size-thumbnail'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/lead-151\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/Lead-scaled-e1765554451555-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103861\" data-attachment-id=\"103861\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/lead-151\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/Lead-scaled-e1765554451555.jpg\" data-orig-size=\"640,381\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.4&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 12&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1752503154&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;1.55&quot;,&quot;iso&quot;:&quot;320&quot;,&quot;shutter_speed&quot;:&quot;0.0083333333333333&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;&lt;a class=&quot;click__begin&quot;&gt;Click Here to Begin Slideshow&lt;\/a&gt;&lt;\/p&gt;\n&lt;p&gt;When left you in the last article in the series, we showed how Van Steel (website: www.vansteel.com) stripped the C3 Corvette rear end center section, in preparation for blueprinting along with the install of 30-spline stub axles (Chevy calls them \u201cSide Gear Yokes\u201d). The original stub axles are smaller in overall diameter and make use of 17 splines. Disassembly was pretty much a text book example of how it\u2019s done. Van Steel does, however have some in-house processes that save some time and effort.  This time around we\u2019ll look at the extensive clean up and we\u2019ll also look at the machining modifications necessary to install those big flange style stub axles. Here goes:  Cleanup of the center section (as well as the positraction assembly) is extensive. These things are often well over fifty years old. Some have never been apart. The first step is a bath in a solvent tank. Next, various pieces are media blasted. The positraction has to be stripped for modifications. And that means the side bearings have to come out. They can be pulled, but Van Steel typically cuts them off using a die grinder and cut off wheel. It\u2019s faster and easier.  The new stub axles Van Steel uses (made-in-the-USA) are built with a flange, much the same as the trailing arm side of the rear end. Because of this, two ears on the side of the center section must be removed. There\u2019s a couple of ways to accomplish this, but a small grinding disc on a die grinder makes short work of the job. The housing is cleaned, deburred and detailed.  Meanwhile, the empty positraction case must also be modified to accept the much larger 30-spline stub axles. It\u2019s a two-step process (on each side) at a machine shop. But first, the ring gear, carrier bearings, plates, springs and finally clutches must be removed.  The bare posi is cleaned and is then chucked in a lathe and centered, using a dial indicator to ensure it is running true prior to any machining operations. Van Steel points out the standard inside diameter of the posi case is approximately 1.247-inches. This must be opened to a diameter of 1.295-inches for the new larger diameter axles, followed by a step cut. The step cut is 0.325-inches deep. Van Steel removing metal at 0.020-inch increments until 0.100-inch of material has been removed.  What this means is the positraction case will have a bore size of 1.295-inches and an 0.325-inch step on the outside with a bore size of 1.395-inches. This allows the new side yokes to be pushed in far enough in order to install a set of 12-bolt c-clips during assembly.  The final process is to sand or file (deburr) the hard edges from the machining process, followed by another complete cleaning of the posi case.  Next up, the positraction unit is assembled, using new friction materials. From there on, the process involves installing the posi along with the setup of the new ring and pinion. Its all pretty standard rear end setup and this point, so we\u2019ll leave it at that.  For a closer look, check out the accompanying photos and captions. There\u2019s more to it than you might first think:&lt;\/p&gt;\n&lt;p&gt;&lt;a class=&quot;click__begin&quot;&gt;Click Here to Begin Slideshow&lt;\/a&gt;&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/Lead-scaled-e1765554451555-300x179.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/Lead-1024x768.jpg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103861'>\n\t\t\t\t<a class=\"click__begin\">Click Here to Begin Slideshow<\/a>\n\nWhen left you in the last article in the series, we showed how Van Steel (website: www.vansteel.com) stripped the C3 Corvette rear end center section, in preparation for blueprinting along with the install of 30-spline stub axles (Chevy calls them \u201cSide Gear Yokes\u201d). The original stub axles are smaller in overall diameter and make use of 17 splines. Disassembly was pretty much a text book example of how it\u2019s done. Van Steel does, however have some in-house processes that save some time and effort.  This time around we\u2019ll look at the extensive clean up and we\u2019ll also look at the machining modifications necessary to install those big flange style stub axles. Here goes:  Cleanup of the center section (as well as the positraction assembly) is extensive. These things are often well over fifty years old. Some have never been apart. The first step is a bath in a solvent tank. Next, various pieces are media blasted. The positraction has to be stripped for modifications. And that means the side bearings have to come out. They can be pulled, but Van Steel typically cuts them off using a die grinder and cut off wheel. It\u2019s faster and easier.  The new stub axles Van Steel uses (made-in-the-USA) are built with a flange, much the same as the trailing arm side of the rear end. Because of this, two ears on the side of the center section must be removed. There\u2019s a couple of ways to accomplish this, but a small grinding disc on a die grinder makes short work of the job. The housing is cleaned, deburred and detailed.  Meanwhile, the empty positraction case must also be modified to accept the much larger 30-spline stub axles. It\u2019s a two-step process (on each side) at a machine shop. But first, the ring gear, carrier bearings, plates, springs and finally clutches must be removed.  The bare posi is cleaned and is then chucked in a lathe and centered, using a dial indicator to ensure it is running true prior to any machining operations. Van Steel points out the standard inside diameter of the posi case is approximately 1.247-inches. This must be opened to a diameter of 1.295-inches for the new larger diameter axles, followed by a step cut. The step cut is 0.325-inches deep. Van Steel removing metal at 0.020-inch increments until 0.100-inch of material has been removed.  What this means is the positraction case will have a bore size of 1.295-inches and an 0.325-inch step on the outside with a bore size of 1.395-inches. This allows the new side yokes to be pushed in far enough in order to install a set of 12-bolt c-clips during assembly.  The final process is to sand or file (deburr) the hard edges from the machining process, followed by another complete cleaning of the posi case.  Next up, the positraction unit is assembled, using new friction materials. From there on, the process involves installing the posi along with the setup of the new ring and pinion. Its all pretty standard rear end setup and this point, so we\u2019ll leave it at that.  For a closer look, check out the accompanying photos and captions. There\u2019s more to it than you might first think:\n\n<a class=\"click__begin\">Click Here to Begin Slideshow<\/a>\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/12-26\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/12-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103862\" data-attachment-id=\"103862\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/12-26\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/12-scaled.jpeg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 15 Pro&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1746694446&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;9&quot;,&quot;iso&quot;:&quot;1000&quot;,&quot;shutter_speed&quot;:&quot;0.025&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Here, the major cleanup process begins. This is typically a dirty task but as you\u2019ll soon see, Van Steel goes the extra mile with the differential carrier casting.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/12-300x225.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/12-1024x768.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103862'>\n\t\t\t\tHere, the major cleanup process begins. This is typically a dirty task but as you\u2019ll soon see, Van Steel goes the extra mile with the differential carrier casting.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/13-22\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/13-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103863\" data-attachment-id=\"103863\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/13-22\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/13-scaled.jpeg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 15 Pro&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1746698293&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;9&quot;,&quot;iso&quot;:&quot;320&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The differential carrier (housing or center section) has what amounts to \u201cears\u201d on each end. They have to be removed because the new 30 spline axles use a flange system to accept the respective half shafts&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/13-300x225.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/13-1024x768.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103863'>\n\t\t\t\tThe differential carrier (housing or center section) has what amounts to \u201cears\u201d on each end. They have to be removed because the new 30 spline axles use a flange system to accept the respective half shafts\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/14-23\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/14-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103864\" data-attachment-id=\"103864\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/14-23\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/14-scaled.jpeg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 15 Pro&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1746698304&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;9&quot;,&quot;iso&quot;:&quot;500&quot;,&quot;shutter_speed&quot;:&quot;0.025&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Here\u2019s a better look at the ears we\u2019re talking about along with the removal process. There are a couple of ways to remove the ears. Some folks cut them off with a saw.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/14-300x225.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/14-1024x768.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103864'>\n\t\t\t\tHere\u2019s a better look at the ears we\u2019re talking about along with the removal process. There are a couple of ways to remove the ears. Some folks cut them off with a saw.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/15-23\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/15-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103865\" data-attachment-id=\"103865\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/15-23\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/15-scaled.jpeg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 15 Pro&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1746696607&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;9&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The positraction case is stripped. Here you can see the bearings are cut off. They can also be removed by way of a puller. &lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/15-300x225.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/15-1024x768.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103865'>\n\t\t\t\tThe positraction case is stripped. Here you can see the bearings are cut off. They can also be removed by way of a puller. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/16-18\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/16-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103866\" data-attachment-id=\"103866\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/16-18\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/16.jpeg\" data-orig-size=\"1536,2048\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;In this photo you can see the bare posi case is chucked in a lathe and centered.  Van Steel notes the OEM positraciton case ID is 1.247-inches.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/16-225x300.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/16-768x1024.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103866'>\n\t\t\t\tIn this photo you can see the bare posi case is chucked in a lathe and centered.  Van Steel notes the OEM positraciton case ID is 1.247-inches.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/17-14\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/17-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103849\" data-attachment-id=\"103849\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/17-14\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/17.jpeg\" data-orig-size=\"1536,2048\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The ID must be enlarged to a diameter of 1.295-inches for the new larger diameter axles, followed by a step cut.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/17-225x300.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/17-768x1024.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103849'>\n\t\t\t\tThe ID must be enlarged to a diameter of 1.295-inches for the new larger diameter axles, followed by a step cut.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/18-17\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/18-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103850\" data-attachment-id=\"103850\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/18-17\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/18.jpeg\" data-orig-size=\"1536,2048\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The step cut has a bore size of 1.395-1.396-inches, while the step depth measures 0.325-inches. &lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/18-225x300.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/18-768x1024.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103850'>\n\t\t\t\tThe step cut has a bore size of 1.395-1.396-inches, while the step depth measures 0.325-inches. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/19-15\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/19-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103851\" data-attachment-id=\"103851\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/19-15\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/19.jpeg\" data-orig-size=\"756,1008\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Here\u2019s the final bore size.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/19-225x300.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/19.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103851'>\n\t\t\t\tHere\u2019s the final bore size.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/20-13\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/20-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103852\" data-attachment-id=\"103852\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/20-13\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/20.jpeg\" data-orig-size=\"756,1008\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Once the machining is complete, the ID is lightly deburred.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/20-225x300.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/20.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103852'>\n\t\t\t\tOnce the machining is complete, the ID is lightly deburred.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/21-15\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/21-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103853\" data-attachment-id=\"103853\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/21-15\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/21.jpeg\" data-orig-size=\"1536,2048\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;We\u2019ve skipped some steps here, but the center section is going back together. Note the new large spline flange axles.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/21-225x300.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/21-768x1024.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103853'>\n\t\t\t\tWe\u2019ve skipped some steps here, but the center section is going back together. Note the new large spline flange axles.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/22-14\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/22-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103854\" data-attachment-id=\"103854\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/22-14\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/22.jpeg\" data-orig-size=\"2048,1536\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The rear is going back together. I specified a 3.70:1 gear set for my combination. &lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/22-300x225.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/22-1024x768.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103854'>\n\t\t\t\tThe rear is going back together. I specified a 3.70:1 gear set for my combination. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/23-14\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/23-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103855\" data-attachment-id=\"103855\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/23-14\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/23.jpeg\" data-orig-size=\"1536,2048\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;This is the initial pattern on the setup. It wasn\u2019t quite finalized in this photo.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/23-225x300.jpeg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/23-768x1024.jpeg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103855'>\n\t\t\t\tThis is the initial pattern on the setup. It wasn\u2019t quite finalized in this photo.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/24-11\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/24-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103856\" data-attachment-id=\"103856\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/24-11\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/24-scaled.jpg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 12&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1749211414&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.2&quot;,&quot;iso&quot;:&quot;250&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Van Steel packaged the rear in a dedicated cardboard shipping crate.  It survived the long journey north!  This is what it looked like when I unboxed it.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/24-300x225.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/24-1024x768.jpg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103856'>\n\t\t\t\tVan Steel packaged the rear in a dedicated cardboard shipping crate.  It survived the long journey north!  This is what it looked like when I unboxed it.\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/25-15\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/25-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103857\" data-attachment-id=\"103857\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/25-15\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/25-scaled.jpg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 12&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1749217245&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.2&quot;,&quot;iso&quot;:&quot;125&quot;,&quot;shutter_speed&quot;:&quot;0.0083333333333333&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Here\u2019s another look at the \u201cnew\u201d rear end. Obviously, it\u2019s very clean, has new stub axles, new seals, new fasteners, new vent, and a new yoke.  More below:&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/25-300x225.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/25-1024x768.jpg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103857'>\n\t\t\t\tHere\u2019s another look at the \u201cnew\u201d rear end. Obviously, it\u2019s very clean, has new stub axles, new seals, new fasteners, new vent, and a new yoke.  More below:\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/26-11\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/26-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103858\" data-attachment-id=\"103858\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/26-11\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/26-scaled.jpg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 12&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1749217265&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.2&quot;,&quot;iso&quot;:&quot;100&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Up front, the center section makes use of a 1350-style yoke. This means I\u2019ll have to either use a conversion universal joint or get a new driveshaft built (that\u2019s the plan). &lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/26-300x225.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/26-1024x768.jpg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103858'>\n\t\t\t\tUp front, the center section makes use of a 1350-style yoke. This means I\u2019ll have to either use a conversion universal joint or get a new driveshaft built (that\u2019s the plan). \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/27-12\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/27-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103859\" data-attachment-id=\"103859\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/27-12\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/27-scaled.jpg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 12&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1749217260&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.2&quot;,&quot;iso&quot;:&quot;100&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The new flange style stub axles have 30 splines instead of 17. That meant the posi (differential) pinion, posi side gears and posi pinion shaft had to be changed to match. &lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/27-300x225.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/27-1024x768.jpg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103859'>\n\t\t\t\tThe new flange style stub axles have 30 splines instead of 17. That meant the posi (differential) pinion, posi side gears and posi pinion shaft had to be changed to match. \n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/28-10\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/28-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" aria-describedby=\"gallery-1-103860\" data-attachment-id=\"103860\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/van-steel-shares-their-63-to-79-corvette-rear-end-build-secrets-part-2\/28-10\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/28-scaled.jpg\" data-orig-size=\"2560,1920\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 12&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1749218035&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.2&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Van Steel Shares Their \u201863 to \u201979 Corvette Rear End Build Secrets: Part 2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;I took a look inside, buttoned it up and added the Van Steel-supplied differential lubricant and positraction additive. &lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/28-300x225.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/28-1024x768.jpg\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-103860'>\n\t\t\t\tI took a look inside, buttoned it up and added the Van Steel-supplied differential lubricant and positraction additive. \n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>When left you in the last article in the series, we showed how Van Steel (website:  www.vansteel.com) stripped the C3 Corvette rear end center section, in preparation for blueprinting along with the install of 30-spline stub axles (Chevy calls them \u201cSide Gear Yokes\u201d). <\/p>\n<\/div>","protected":false},"author":20,"featured_media":103861,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5011,3697,17,11,3470,4879],"tags":[3559,109,4008,281,41,2209,822,461,321],"class_list":["post-103848","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chassis-suspension","category-galleries","category-guest-column","category-how-tos","category-news","category-slideshow","tag-chassis","tag-corvette","tag-guest-column","tag-how-to","tag-news","tag-rear-end","tag-suspension","tag-tech-tips-2","tag-wayne-scraba"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2025\/12\/Lead-scaled-e1765554451555.jpg","jetpack_shortlink":"https:\/\/wp.me\/p42YSK-r0Y","jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts\/103848","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/comments?post=103848"}],"version-history":[{"count":1,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts\/103848\/revisions"}],"predecessor-version":[{"id":103867,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts\/103848\/revisions\/103867"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/media\/103861"}],"wp:attachment":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/media?parent=103848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/categories?post=103848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/tags?post=103848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}