I have a 94 camaro z28 lt1. I know the lt1 blocks are 1pc rear seals. I have a chance to buy a 350 4bolt main 1pc rear from a 91 sbc. Will this block work in mine. I was building a 355 for my lt1. Someone told me the lt1 blocks are different then the others

 

The coolant passages are different. I'm not sure of all the differences off the top of my head but there are a few.

 

Cool thanks - Mike

 

A typical SBC block will not work with LT1 components.

 

Yeah, the blocks are different, especially on the front.