Last year, Tone Box released a uniquely menacing overdrive unit shaped like a human skull where red LEDs lit up the orb sockets. Now the company has announced a new Skull Crusher in steel or gold ...

No one builds a hot rod to save gas, but downgrading to bare essentials and stiffing your roommate on rent will only get you so far before it’s time to park that 10-mpg big-block. Even when gas was ...

The stock S197 auto transmission is praised for its strength in stock form, which is reliable to the mid 500 hp (at the tires) range. We can't say enough about the stock transmission with its ...

Why is the Gear Vendors overdrive so popular on HOT ROD Drag Week? Racers know it will live behind 4,000 hp, can be installed in a weekend, and doesn't share fluid with your transmission so it won't ...