Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: SBC Engine Block Identification

  1. #1
    Member JUNIOR BUILDER
    Join Date
    Sep 2003
    Location
    Watsontown Pa.
    Posts
    73

    SBC Engine Block Identification

    The numbers T0520HV are stamped on the tab in front of the right side head. I am of the understanding that it is a 1965 327/350 4 bolt. When I pulled the pan, it was a 2 bolt. Any help?
    Safety is only what one makes of it!!!!!

  2. #2
    Senior Member RACING JUNKIE oldandtired's Avatar
    Join Date
    Dec 2008
    Location
    Sugar Hill, GA
    Posts
    1,368
    What is the 7 digit numeric code on the back of the block? If you have a 65 327 it should start with 37, 38 or 39.
    Dave
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triumph of evil is for good men to do nothing" Edmund Burke

  3. #3
    Member JUNIOR BUILDER
    Join Date
    Sep 2003
    Location
    Watsontown Pa.
    Posts
    73
    3956618
    Safety is only what one makes of it!!!!!

  4. #4
    Senior Member RACING JUNKIE fla1976's Avatar
    Join Date
    Aug 2007
    Posts
    1,530

    Engine

    According to my books, it decodes as a 1965 Corvette Special high performance, transistorized ignition. It should be a 4 bolt but maybe somebody doctored the numbers at some time.

  5. #5
    Senior Member RACING JUNKIE fla1976's Avatar
    Join Date
    Aug 2007
    Posts
    1,530

    3956618

    The casting number decodes:

    Years Casting CID Low Power High Power Main Caps Comments
    1969 3956618 302 290 290 4 Z28
    1969 3956618 327 235 235 2 fullsize
    1969 3956618 350 250 350 2/4 cars

    Here is the site: http://www.nastyz28.com/sbchevy/sblock.php

  6. #6
    Member JUNIOR BUILDER
    Join Date
    Sep 2003
    Location
    Watsontown Pa.
    Posts
    73
    I am having a hard time understanding why the numbers on the block up front tell me one thing and the numbers at the back of the block are telling me something else.
    Safety is only what one makes of it!!!!!

  7. #7
    Senior Member RACING JUNKIE oldandtired's Avatar
    Join Date
    Dec 2008
    Location
    Sugar Hill, GA
    Posts
    1,368
    Quote Originally Posted by dgordner
    I am having a hard time understanding why the numbers on the block up front tell me one thing and the numbers at the back of the block are telling me something else.
    On the front, you have the possiblity of a restamp. You can't mess with the casting numbers.

    Dave
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triumph of evil is for good men to do nothing" Edmund Burke

  8. #8
    Senior Member EXPERT BUILDER
    Join Date
    Dec 2002
    Location
    spring creek nv.
    Posts
    328
    go to this link..very good id's on casting no#'s
    http://www.mortec.com/bbc.htm

    sure this will get you in right way of reading casting no's on blocks/cranks/everything

  9. #9
    Member JUNIOR BUILDER
    Join Date
    Sep 2003
    Location
    Watsontown Pa.
    Posts
    73
    So if the casting number tells me that it could be any one of different c.i., How would I determine of it is a 327-350 ?
    Safety is only what one makes of it!!!!!

  10. #10
    Senior Member RACING JUNKIE fla1976's Avatar
    Join Date
    Aug 2007
    Posts
    1,530

    Engine

    1.Get the number off the crankshaft and find the code.
    2.Measure the stroke

  11. Racing Junk


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy