Ford 9 in. 4in. 40 Spline LSD TorqueWorm® HD Pro Third Member Assembly Ratio:5.43:1 Most Speedmaster intake manifold gaskets

Most Speedmaster intake manifold gaskets have Printoseal construction

a resized diameter provides optimum stress lubrication along the entire length of the shaft

Speedmaster electric fuel pumps feature an improved design for street and strip applications

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

which reduces the friction

Ford 9 in. 4in. 40 Spline LSD TorqueWorm® HD Pro Third Member Assembly Ratio:5.43:1 Most Speedmaster intake manifold gasketsSpeedmaster 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.