Ford 9 in. 4in. 40 Spline LSD TorqueWorm® HD Pro Third Member Assembly Ratio:5.43:1 These Speedmaster perimeter plates employ

These Speedmaster perimeter plates employ multiple injection points to ensure that a perfectly atomized

Pulleys can be replaced with pulleys of the same or different diameters

Speedmaster magnetic pickups are the same high-output assemblies that are currently found in all Speedmaster 7000 series distributors

These TH400 aluminum tailhousings feature light weight and improved strength

manual or EFI pump

Ford 9 in. 4in. 40 Spline LSD TorqueWorm® HD Pro Third Member Assembly Ratio:5.43:1 These Speedmaster perimeter plates employSpeedmaster Ford 9 in. third member assemblies are designed to help you get that horsepower to the ground. They include aluminumn thru bolt design center section, as well as our famous TorqueWorm geared limited slip differential, 1350 series yoke, daytona pinion support, and gear ratio. Whether you're assembling a daily driver, street rod, or race car, Speedamster's third member assemblies will provide the durability that your vehicle deserves.