Last month we built a mild street engine using a factory Chrysler 383 block, crankshaft, rods, and cylinder heads combined with some aftermarket goodies from Comp Cams and Summit Racing Equipment, and ...

Most diesel enthusiasts look for a way to test their latest modifications, and we’re no different. After bumping the engine’s injection timing up from 7 degrees to 27 degrees before top dead center ...

How many years have you been tinker-tuning your Corvette only to have to keep popping the hood for more tweak-tuning? Can't quite get the carburetor in a proper state of tune? Rough running, misfire, ...

We call it power stacking. It’s where a guy buys a bunch of bolt-on performance parts for his engine, each with its own rated power gain, and then he adds up all those listed gains and expects that as ...