Ford 9 in. 31 Spline LSD TorqueWorm® HD Case Third Member Assembly Ratio:3.70:1 These Speedmaster aluminum water pump

These Speedmaster aluminum water pump pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 aluminum specifications and come in machined or polished finishes to suit your application

Made from high quality aluminum

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

the use of 6 pinion gears means the stress on gears is spread over a greater surface area

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

Ford 9 in. 31 Spline LSD TorqueWorm® HD Case Third Member Assembly Ratio:3.70:1 These Speedmaster aluminum water pumpSpeedmaster 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.