Ford has used "'open" diffs, Detroit Lockers, and several types of clutch-type limited-slip ('posi') units. Tom favors a properly prepared posi for most street/strip applications. The best Ford ...

To most people a clutch is something that either works correctly or it doesn't. All too often, if the clutch starts to chatter, slip underload or fails to disengage/engage properly, they replace both, ...

It’s no secret that traction is the cornerstone of any vehicle’s off-road prowess. If the engine’s torque doesn’t get to the tires, all the power and suspension upgrades in the world are of little ...