I pulled the cover off my my 3.73 posi rear for a routine checkup, and found a ton of gear damage. On 17 ring gear teeth, the outer half of the tooth is broken off. The break looks the same on all 17 teeth.

The pinion has never been taken out of the rear, so it's still at GM spec. The carrier has been changed to a posiunit, with the same ring gear. Backlash is .0075"...within GM spec.

What went wrong?

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"American made baby. 100% American iron. The muscle among the masses. My hero. Yep, you can take your ergonomically designed, space age, computer controlled, 4 door, cup holding map lighted split double wishbone split fold down retractable cargo covered moon roof piece of transportation and keep it. For I have felt the thunder. And I know the difference!"
JSP Motorsports
ICON Motorsports

 

are you running a 305? i hear they're known for ripping the teeth right off the ring gears. too much torque for the gear to stand up to. try pulling a plug wire and killing off a little power, you'll never miss it.

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ICON Motorsports

1st & 3rd

 

Ede you are so MEAN!

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84 Camaro ZZ4 with HOT cam. 1.88 60' (12.98 @ 105MPH E.T.)
Other Mods: You name it and I have probably changed it.

2001 Dodge Ram Quad Cab 5.9L 4*2

ASE Certified Auto Tech
LIVE AND DIE BY THE ALMIGHTY BOWTIE!

 

hard metal failure. richmond gears are stronger. I would guess the gears got hot at some point, and took the temper out.


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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro