Former HOT ROD and Car Craft editor Jeff Smith famously told us that you could take a set of 1990 Vortec cylinder heads and bolt them on the first small-block Chevy engine from 1955—in theory ...

The new 350 used the same engine block as other SBC engines, with 4.40 inches between cylinder centers. It also used the same 4.00-inch cylinder bore diameter and 5.7-inch connecting rod length.

As the name suggests, the V-12 LS is a 12-cylinder engine that shares its basic design with Chevy’s iconic small-block. The V-12 block is cast in either iron or aluminum according to buyer ...