Allstar Performance Ring & Pinion Gear Set — GM 8.5in 3.73 Ratio | ALL70124 2015-chevrolet-ss-esi3476706 000 Spark Energy (mJ per

000 Spark Energy (mJ per spark) 200-220 43 Male Female 342 2 Grade Type Race 31 2

1985-1992 Ford F-250 XLT Lariat 1997 Ford F-250 HD XL 1997 Ford F-250 HD XLT 1983-1986

packaged as a set of 10

Polished Stainless Steel Dual Wall Slash-Cut Weld On Tips

Allstar Performance Ring & Pinion Gear Set — GM 8.5in 3.73 Ratio | ALL70124 2015-chevrolet-ss-esi3476706 000 Spark Energy (mJ perThis Allstar Performance ring and pinion gear set is a 3. 73 ratio kit for GM 8. 5in 10 bolt rear ends. It uses a 27 spline pinion gear and is part of Allstar's 3 Series housing fitment line. The ring and pinion are lapped in matched sets at the factory for quiet operation and consistent tooth contact, and are built for race, street, and off road use. Allstar Spec Sheet (PDF) Allstar Ring & Pinion Instruction Sheet (PDF) Compatibility Fits GM 8. 5in