Block Id

swifter said

Thanks for the help but all are NOT the same,The early truck blocks had thicker walls hence more overbore is available,I got it from a family in Indiana in a estate sale,The owner was killed when a jack let loose and crushed him underneath,Just want to know what I got that's all,It's funny you find out anything you want about "LA" blocks but the new stuff can be a mystery--"Anything that's not a mystery is just guesswork" thanks again Steve

Click to expand...

While 5.7L blocks might on average have thicker walls than 6.1L blocks and earlier 5.7L blocks might on average be thicker still. I really think that the only way to know for sure is to sonic check the block. There was this belief that B and RB blocks from certain dates had thicker walls. Someone finally sonic checked a bunch of blocks and found little to no relationship between date of manufacture and cylinder wall thickness.

Regards,

Joe Dokes