Why has the Ford 9-inch axle become the go-to axle for Ultra4 racing and hardcore use? It has a lot to do with the evolution of the axle assembly from the factory-built unit, to custom-fabricated axle ...

Performance is typically gained by exchanging stock pieces for readily available aftermarket parts and systems. Or, in some instances, one-off or custom treatments are used for making big steam. The ...

Back in the '60s, parts tended to be over-engineered. Drivetrains especially were quite capable of handling that era's torquey high-output engines. In the intervening years power levels dropped, so ...