12-Bolts to Glory The GM 12-bolt debuted in 1965 and ... that also supports the gear end of the pinion to limit gear deflection under high torque loads. Like the 12-bolt, the 9-inch pinion gear ...

We'vesubjected our Chevelle to much more than just high torque andsticky-tire drag launches; we've also abused the stock 12-bolt axle withyears ... to set up both the pinion depth and the backlash.

changing a ring-and-pinion gearset is much more involved and requires some dedicated tools that you probably don't have. This is especially true of the GM 10- and 12-bolt rearends, but we've ...

The Moser C-Clip Eliminator kit gets rid of the C-clips your GM 10- or 12-bolt rearend has always used to secure the axleshafts to the differential. Open up the center case, free up the pinion pin ...