With so many aftermarket parts available for our Mopars these days, sometimes it's difficult to figure out which ones will really benefit your car. And while many manufacturers claim a part will add a ...

We recently spent a couple of days dyno-testing several different rocker-arm ratios on our 470-inch Mopar big-block. The good news was the engine made 700 hp on pump gas, but we were disappointed when ...

A New Intake, Cam, Carburetor, And SpacerWhen we started out building Danger Mouse (DM), we knew that testing it would probably turn out to be the most fun we've had on the dyno in a long time. We ...

Plenty of folks have penned articles on carburetor spacers. Some work; some don't. So when we came across a series of spacers from HVH (High Velocity Heads), we were, to say the least, a wee bit ...