69 chevy 3963512 casting 4 bolt date L 18 8 this block is a SHP ( SPECIAL HIGH PERFORMANCE) motor it has the large oil cooler plug above the filter. The block has been decked and bored.030 prior to purchase. I had this block checked for cracks then jet cleaned by a well-known shop in MN . 7115 crank also turned never used still in the bag. Original 163 factory winter's intake no damage one Helicoil at the carburetor base. Complete with correct 8" balancer with timimg cover. Choice of either an impala extra quart oil pan or chevelle pan. I do not have pistons or heads only what's in the pictures. This is a very hard motor to find. It is not a 454 block 100% 427. Please call or text for more information and pictures. 651 775 two777.