As a longtime soapbox-shouter of tunnel-ram greatness, David Freiburger is constantly peppered with questions about running a single four-barrel carb versus dual quads on the tunnel ram. And finally, ...

Semco Performance brought a 465ci Pontiac engine to the AMSOIL Engine Masters Challenge to go head-to-head with the bigger Fords and Chevys in the big-block class and took home the win by churning out ...

On Engine Masters, presented by AMSOIL, the crew dives into how cylinder head flow and boost affect horsepower. They run their 363 Windsor once with 195cc and 225cc heads, and declare once and for all ...

Engine Masters, presented by AMSOIL, is an all-new show for the Motor Trend channel! Each episode takes you into the engine-dyno room where power claims are questioned and head-to-head shootouts ensue ...

In Final Eliminations at the 2013 AMSOIL Engine Masters Challenge, we had a battle of just two engine types: the Ford Cobra four-valves, which dominated the qualifying session, and the Chevrolet LS ...

Street-car turbo people, this one's for you. We all know that adding any sort of restrictor-like a muffler-is going to hurt power on a turbo motor. We also know that sometimes it just makes ...

Hot intake air temps are bad, and cold IATs are good, right? But how bad is bad, and how good is good, especially in a boosted application? To find out, the guys explore the benefits of an air-to-air ...