While making our usual rounds of race shops, we came across a problem that plagues many racers and unnecessarily costs them lots of money-and we thought we'd share the solution with you. While ...

Fittings such as these, for connecting a compressed air line to the spark plug hole for valve support, are available at most auto parts stores. Occasionally it is necessary or desirable to inspect or ...

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

Those wound-up pieces of high-tensile steel under your rocker arms work so hard closing your valves over millions of cycles that they could probably use a replacement right about now. We're talking ...

If you’re one of the many, many customers waiting on a replacement valve body for the 10-speed Allison transmission in your GM heavy duty truck, there may finally be some light at the end of the ...