The hottest cylinder head on the small-block Chevy hit parade right now is the Vortec iron head. It's extremely affordable and flows a bunch of air for a stock production iron head with a 170cc port ...

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 ...

Toyota had just managed to settle the recall waters a little bit last month, when its premium division Lexus debuted a recall for 17,000 HS 250h hybrid vehicles that were suspected of having a fuel ...

For mild street engines, stock valve springs are more than adequate. But if you've screwed in a big bumpstick for strip-banging or banzai runnin', then pay attention. Our plan was simple: Install a ...

Back in September 2020, GM quietly admitted that small-block V8s suffer from “possible broken valve springs.” According to a technical service bulletin from the biggest of the Big Three in Detroit, ...

Back in March, The Drive broke the story about dozens of 2013 Scion FR-S and Subaru BRZ owners who reported experiencing catastrophic engine failure shortly after a valve spring recall repair largely ...

Imagine this scenario. You've scrimped and saved, and finally have enough dough to get the Corvette you've had your eyes on. Just for argument's sake, let's say that dream car is a cream-puff '92 ...

Getting a valve out of a vehicle isn’t too hard – it’s putting the new one in that requires more care. A typical commercial vehicle air braking system requires, at minimum, around a dozen core ...