Back in 2004, GM Performance Parts shipped us a complete LS1 to evaluate. Looking back, we really threw the hammer at this one. We tested every off-the-shelf cam, manifolds and cylinder heads, ...

SLP, a staple for many consumers among General Motors performance product, will be bringing its latest to the 2015 SEMA Show in Las Vegas. LS-engine fans will want to take note. The company will ...

Builders interested in upgrading their project vehicle’s LS V8 engine with a big, bad blower should check out FAST’s new supercharger and cam power package. Recently revealed at the ongoing SEMA360 ...

The whole "bolt-on horsepower" theme is a staple in enthusiast carmagazines because it sounds so enticing: just spin wrenches for a fewhours and, viola! Power beyond your wildest dreams. Sadly, many ...

Have you heard a twin-screw blower yet? There is nothing in the world like the giant slide-whistle scream of the new batch of positive-displacement superchargers for late-model engines. It's like ...