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 ...

"Coil bind" occurs when a spring's coils stack solid at or before full camshaft lift. This develops an infinite load on the valvetrain, causing its weakest link to fail. If you're lucky, the result is ...

The race (or should we call it war?) to make the loudest, fastest, most capable off-road pickup truck has really come to a head in the past 12 months. Though Ford went largely unchallenged with its ...

True ’wheelers believe that every OE system can be upgraded. However, some factory design quirks aren’t blatantly obvious. One example is Jeep TJ/LJ rear springs. Even die-hard TJ owners might not ...

Celebrated former Four Wheeler Feature Editor Ben Stewart used to say: "Real Jeeps have round springs." He coined this phrase shortly after the Wrangler TJ was introduced, when everyone else was ...