Q I own a '99 Chevy Lumina with a 3.1-liter V6. This weekend I got a flashing check-engine light with a severe misfire. I took the vehicle to a shop, which told me I had two rocker arms blown right ...

GM has filed a patent application a variable displacement valvetrain system with rocker shaft porting and insert sleeves for ...

General Motors has filed a new patent that offers a look at how the company may be rethinking cylinder deactivation for its ...

SEMA 2017 was a great show for fans of the Ford FE engine. Trick Flow Specialties announced that they would be releasing a new CNC-profiled head for the FE, while across the hall Comp Cams was showing ...

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 recently filed patent details a new GM cylinder deactivation system that appears to be heading to the next-gen V8 engines ...

Some early Captivas fitted with the diesel engine may have experienced a condition whereby the camshaft rocker arm bearing could fail. In some instances this rocker arm failure was known to result in ...