PerTronix International MS Engine Parts

Speedway Tech Zach discusses the Pertronix Ignitor III conversion in his '55 Chevy.

Instructions on how to install a PerTronix Ignitor Kit in an old flathead distributor for a flathead V8.

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!

To celebrate the upcoming 106th running of the Indianaplis 500, here's a look back at a few of the engines that have competed at the Brickyard over the years.

Engine Cylinder Numbers

The GM LS engine is the hot powerplant these days. But is there too much of a good thing?

The dyno at the Speedway Motors Racing Engine shop is always humming. We set up a camera in the cell to catch a few of the engines that have passed through the door recently.