Ford 9 in. 4in. 40 Spline LSD TorqueWorm® HD Pro Third Member Assembly Ratio:5.43:1 Featuring a low profile design

Featuring a low profile design and a high flow runner design these manifolds will improve performance from 1500-6500 RPM range

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

Speedmaster pilot bearings c-clips are engineered with precision to provide superior quality

manual or EFI pump

which reduces the friction

Ford 9 in. 4in. 40 Spline LSD TorqueWorm® HD Pro Third Member Assembly Ratio:5.43:1 Featuring a low profile designSpeedmaster 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.