MSD International B122 Engine Parts

All you need to know about racing a 602 GM crate engine and the necessary parts to make a race ready engine.

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!

Engine Cylinder Numbers

Congratulations to our own Jake Bubak on his big with at the 2022 IMCA RaceSaver Nationals! Here's a quick look at what happened...