A class action lawsuit filed against GM over alleged faulty lifters in certain V8 engines has still not received class action ...

A small gap with big importance in the performance and health of an engine - here's everything you need to know.

Things just keep stalling, making plaintiffs and lawyers give up after years of waiting. General Motors isn't complaining.

1. Net valve lift is the amount of lift (imparted to a valve) as measured at the camshaft lobe. 2. Valve duration is the period of time during which a given valve is off its respective seat and ...

Over the past couple of racing seasons, the camshaft specialty companies have created dozens of new profile designs, many of which are over the .800-inch-lift mark. Along with camshaft and cylinder ...