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Note: Circle track racing applications require a minimum of 4 qts. of rear end lube. Using less than this amount will lead to immediate pinion bearing failure.
You can also lighten these ring & pinion gears, check the appropriate box at the bottom of the shopping grid.
We also offer standard gears from 3.50 to 6.50 ratios on our site. See 91919350.
Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).
TheseTeflon9" Ford rear axle pinion seals are good to over 400 F. Stock rubber seal starts to deteriorate at about 250 F.
Ford 8" Overhaul Kit includes all bearings, pinion nut, pinion seal, gasket, shims, crush collar, sealant, gear marking grease, brush and Loctite.
These 9" Ford rear axle pinion seals are good to over 400 F. Stock rubber seal starts to deteriorate at about 250 F.
These precision CNC machined housings feature three o-rings on the outer side, and press securely into the axle tube of any GN housing. The unique design works with 28 or 31 spline GN axles to prevent rear end lube from filling the axle tube and depriving the ring and pinion of lubrication.