Ford 9 in. 31 Spline LSD TorqueWorm® HD Case Third Member Assembly Ratio:3.70:1 it's only a little diet

it's only a little diet

and the outer housing has a slim design that allows for mounting inside of the headers

Made from high quality aluminum

and their latex coating conforms to minor sealing-surface irregularities for a better seal

Ford 9 in. 31 Spline LSD TorqueWorm® HD Case Third Member Assembly Ratio:3.70:1 it's only a little dietSpeedmaster 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.