[83GMCK2500]

Originally Posted by nekkidhillbilly

only difference in a 4.8 and 5.3 is the piston rods. so what ever you find id jump on.

AND THE CRANKSHAFT!

Originally Posted by nekkidhillbilly

well certain parts can work on the other gens. you just need to know what does and what doesnt. i know the intakes will swap idr if it needs mods though and some other odds and ends.

There are at least THREE different intake styles depending on which heads the engine has. The early style cathedral port LS1/LS2/LS6, the rectangular port LS7, and the rectangular port LS3/L92.

LS engines are awesome, the engineering and development that GM put into them is incredible, as well as the aftermarket support for them. They do require some research and planning though. They bolt-in, sure, but they don't drop-in by any stretch of the imagination.