I pulled my old drag rear to swap gears(3:73 to 3:42's) and drop in my bird. After pulling the powertrax to swap the gears I noticed a huge crack in the pumpkin housing where it mounts to the shaft on the passenger side.
This rear end only had about 30 runs on it (3:73 too agressive). I dident see anything to indicate an improperly installed part so what gives??? Are these 10 bolt housing that weak?
SSC

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85 Camaro, 355/400 "drag car" current DD 13.1@ 101mph on its last season run.
Plans: Possibly add N20 for next season.
82 Firebird, 355/350, as soon as the powertrax gets installed. "dyno time"

 

This is the '82 right? These early 7.5 10 bolts had a weakness in the housing where the torque arm bolts to it. There was a recall where the dealer installed something to help it. The main complaint was usually gear whine. I would say it was a weak housing, maybe also the torque arm attaching bolts where too tight. I wouldn't think it would break in a 13 second car.

 

I think the rear came out of a 85, just not sure. I dont no I put the powertrax in the 82 today no problems so. Its interesting about that recall though, I'll look into it.
Thanks!
SSC

P.S altitude corrected 13's here are 10's at sea level