Overhead cams are a more efficient method of actuating the valves than with a pushrod, but someone in Detroit never got the memo. And thank goodness they didn't. With production pushrod mills turning ...

A.Incorrect rocker arm geometry is a common problem, however in most cases (assuming the rocker arms and other components are correct for the engine in question) it's easy to correct. According to the ...

Would you believe us if we told you that you could put 15-17 more horsepower to the wheels with rocker arms? We were a little skeptical until we soaked up the complete details on how possible this ...