Useful Articles

Picking the right LS engine generation for swap projects is where a lot of builds go sideways before the engine is even on the stand. Not because the buyer chose a bad engine, but because they chose the wrong one for their chassis, their ECU budget, or the power level they actually want to run. The LS family is broad. LS1, LS2, LS3, LS7, and the later LT-series engines all share a family resemblance but differ in ways that matter the moment you start sourcing mounts, wiring looms, and accessory brackets.

Five families of GM automatic transmission span four decades of development. From the affordable four-speed 4L65-E to the ten-speed 10L80-E, each has a role in modern engine swaps. Here is what you need to know before choosing one for your build.