On the dyno, the Pro Magnums produced slightly lower numbers than the aluminum rockers. Torque peaked at 401.7 lb-ft while horsepower was 404.1. Average power in the selected range was 386.11 and ...

Mustang Week, Pro Dyno Battle at the Beach Shootout Profile: Justin Young. One of the competition’s heavy hitters, Justin Young could come close to four-digit power ...

Dyno Time Naturally Aspirated. After adding a Pro Comp Motorsports dual-plane intake manifold, a Professional Products damper, Autolite spark plugs, ...