CALL TO CONFIGURE AND PLACE ORDER.
The GForce 9” conversions are designed to take over where the OEM differential begins to suffer from strength and reliability concerns. This can happen at various levels of power or abuse for different platforms. No driveline component will ever be “bomb-proof” in a racing environment, but the GForce 9” kit will give you the best chance of rear-end survival and reliability, all while retaining the factory style IRS.
Our 9” conversions use a Strange Engineering aluminum center section paired with the Strange S-Trac differential, which has proven to be a phenomenal combination to retain OEM-like drivability, while being able to support a tremendous amount of torque in a functional differential. We use a standard 9” 28-spline pinion “street” gear for the vast majority of applications, but we can also do 35-spline pinion Pro Gears upon request for customers who are interested in drag-only applications.
Most applications will be offered with a top-of-the-line 4” aluminum driveshaft that uses a Sonnax slip joint and tubing that we have tested to be about 13% stronger than the industry standard. This also comes with a direct bolt transmission flange, or forged slip yoke for traditional style open-tailshaft transmissions.
All rear ends will be offered with upgraded polyurethane differential bushings as standard with the option to upgrade to billet aluminum for higher torque and racing applications. We do not include, but STRONGLY encourage you to source your own upgraded polyurethane cradle bushings. The differential and cradle bushings are the two fundamental support pieces we focus on first when looking at rear end stability and they need to be upgraded accordingly as you go up in power. Together, they will not only help prevent wheel hop and control pinion rise, but they will also make the car more consistent and feel more controlled on the road and at the track.