Ford 9 in. 31 Spline LSD TorqueWorm® HD Case Third Member Assembly Ratio:3.70:1 Designed for Speedmaster starters

Designed for Speedmaster starters

heavy-gauge steel radiator supports are exact replacements for your factory support

it's only a little diet

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 Designed for Speedmaster startersSpeedmaster 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.