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 ...

The Special K swap is the Holy Grail of Honda swaps currently, giving Civics from as far back as the EF era of the early ’90s more displacement and 21st century power and technology. In many cases ...

TwinPower unveiled its new performance-driven components for Harley-Davidsons, including steering-damper kits and high-flow ...

If you are a diehard Mopar fanatic, it should be obvious that the LS engines seem to be getting the lion's share of aftermarket love right now. A quick skim through the pages or posts of any of the ...

Two-Valve modular engines tend to be overlooked when it comes to performance mods. Sure, there have been supercharger kits, cams, and bolt-on parts available for these mild-mannered Ponies for years, ...