Ford 9 in. 31 Spline Spool Nodular Iron Third Member Assembly Ratio:3.00:1 which is much stronger than

which is much stronger than stock steel and mates better with an aluminum case

efficiency

thanks to its exceptional race-proven performance both on and off the track

The Speedmaster aluminum pinion supports are completely CNC machined from our designed forgings or billet 6061-T6

They accurately measure camshaft centerline

Ford 9 in. 31 Spline Spool Nodular Iron Third Member Assembly Ratio:3.00:1 which is much stronger thanSpeedmaster Ford 9 in. third member assemblies are designed to help you get that horsepower to the ground. They include high quality nodular iron thru bolt design center section, as well as a forged chromoly steel spool, 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.