Enginetech GMC Sierra 3500 HD Engine Parts

Inside GM’s Gen V LT engine family: history, tech, and performance of each LT engine option available.

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

Greg walks step by step through priming your engine.

Watch Zach build our 383 engine for the 1932 Roadster. Zach and Joe breathe new life into our 383 by adding a Holley 750 4 Barrel Carburetor and Dyers 4-71 blower.

We show you how to keep that old GM transmission when swapping in an LS engine. Our LS swap adapter kits make it easy!

The small block Chevy is still a great option for your muscle car, hot rod, or classic truck, just follow our build lists

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.