"Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." — Archimedes (287- 212 B.C.) On the street, everything is a compromise. Power is now easier to make than ...

Assuming a properly tuned engine, there are three factors that contribute to poor streetability: long cam duration, high compression ratios, and excessive cruise rpm. Since cam selection is largely ...

Few vehicle modifications have as major an impact as changing gear ratios, and it's because your car's gear ratio directly translates to how it delivers power. Think about it: The gear ratio, or how ...

You've added the lift and big tires, but you're being outrun on the freeway by aged Yugos, and your 4WD sucks gas faster than an earthmover. Part of your woes may simply be due to the gearing in your ...

What's the deal with the Jeep Wrangler Rubicon's four-to-one (4:1) transfer case? What about those 4.10 gears in those beefy Dana 44 axles? Why is it that when people put bigger tires on their ...