OK, let's start this off by listing all the disadvantages of installing a Gear Vendors under/overdrive in your vehicle. For starters, it adds 12.25 inches to the rear of your drivetrain. Done. Oh, ...

It's been two decades since Detroit began offering overdrive transmissions as original equipment in virtually all vehicles rolling off their assembly lines. And while the OEM's intent was to improve ...

These days, some people think the best way to fix this is to swap in a more modern overdrive (OD) transmission, but there are downsides to this plan. Older OD transmissions, like the 700-R4, can ...

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 ...