Block Id

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