S10 Swap how to

[Doranged]

Originally Posted by joedoh

its the engine. the GMC engine is 2 inches longer, and the radiator was mounted inside the core support, instead of behind it like a chevy, to allow for this extra length. the difference can be seen in the front engine crossmember, you cant put a chevy engine on a gmc crossmember.

otherwise the sheetmetal is the same, you can use GMC sheetmetal on a chevy and vice versa, as long as you have ALL the front end parts.

a big block uses the same mounts and mount distance as a sbc, so ideally if you set the mounts up for one it should clear the other.

Thank you very much that clears things up for me. I have always been a SBC guy so I never really done anything with a big block. But I have this 454 that runs good and figured old junk hot rod truck + old junk big block 454 = win