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 ...

The valvespring is the curse of the overhead-valve, pushrod V-8. Racers and savvy enthusiasts have long been conscious of the effects of valvesprings going away. Take a cruise through the pits of any ...

I bought a 1969 Chevrolet Chevelle SS 396 recently and want to know if unleaded gas will harm my engine. Also, will using regular unleaded instead of high-octane unleaded hurt? I’d rather use the less ...

Federal-Mogul’s “lean tool steel” contains a higher proportion of chromium than standard tool steels, cost-effectively adding carbides that create a multiple-phase composite microstructure. Valve seat ...