We build a 427-inch LSX engine with an iron block and Chevrolet Racing high-compression COPO pistons to make 661 hp on Westech Performance’s Superflow dyno.

An engine compression test kit consists of a pressure gauge and an assortment of hoses and fittings so that the gauge can be connected to the spark plug holes on each of an engine's cylinders. To ...

We dyno test a 6-liter LY6 LS engine with three stock-style cylinder heads from EngineQuest and a camshaft from Comp Cams.

While an engine compression tester may not be the most common tool in a mechanic's garage, they can be very useful, especially for older cars.

If you're about to jump into the world of turbo-charging your engine, there are a few important things to consider before ...

The LS and Vortec engines are well-known to be under the hood of GM models, but there are key differences between them. Here's what you need to know.