Ford 9 Inch Ring And Pinion Setup Videos

Adding shims on the ring gear s smooth side of the carrier moves the ring gear closer to the pinion causing the teeth to mesh tighter decreasing the amount the backlash. The ford 9 inch axle came from the factory with ratios that are whole numbers such as 3 0 1 which was achieved with a 39 tooth ring gear meshing with a 13 tooth pinion gear. Here s a couple videos to go along with your notes.

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Ford 9 inch ring and pinion setup videos.

The build is in the last video the first one is a strange shop tour. That s what you should know about ford 9 inch gear ratios chart. There are also a number of strategies to manually correct the relationship even if you can not find the amount of teeth in the ring gear or pinion. To verify the shim is correct the ring and pinion set needs to be installed and torqued in place.

Start with a nominal pinion shim of about 014 inch. We shot this at strange engineering a couple years ago as they set up a 9 with a camaro housing. Ford 9 ring pinion swap install an amateurs guide. See all items in this department.

Once pinion depth has been set a final backlash setting can be achieved by adjusting the location of the differential and ring gear. If old pinion was 2 and new pinion is 1 you will need to subtract 003 inches from the original shim. Ring and pinion 4 57 1 ratio ford 9 in set not yet reviewed. Add or subtract pinion shims in thousands 001 of an inch.

This is opposite what you would do on most differentials as pinion shims on a ford 9 inch change pinion depth in the opposite direction compared to most differentials. Torque down all the parts and do another pattern check. Find ring and pinion gears with ford 9 in. Then perform a pattern check.

Install cartridge continued make certain that the cartridge is oriented correctly. For this endeavor we ll be installing a ford 9 inch rearend that has been outfitted with a 11 inch drum brake kit with e brake and 28 spline axle assemblies from currie enterprises as well as. This type of ratio is referred to as non hunting because any given pinion tooth always contacts the same three ring gear teeth per revolution. The ratio of a set of gears depends on the range of teeth that the pinion has in relation to the ring gear.