I was noticing the other day a puddle of rear end fluid on the floor, the leak is comming from around where the driveshaft connects to the rear end. How would I fix this.

Also, I have the stock limited slip rear end. What all would I need to change over to a 3.73? And what are the prices for the parts?

Thanks
Michael

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1991 Chevy truck 5.7 engine
Competition Cam 454 lift
Edelbrock Valve Springs
Holley Red Electric Fuel Pump
Eldelbrock Performer RPM Intake
Holley 750 Double Pumper
68 jets front 74 jets rear
Turbo 350 transmission
B&M shift kit
Custom drive shaft
3.73 Rear end
Flowmaster exhaust
No emissions or computer
Grant steering wheel
http://www.fbody.com/members/Camrs89/

 

The leak is from the pinion seal, most likely. That seal doesn't typically wear out, it is much more likely that the flange nut has loosened and the extra slop has taken out the seal. At least, that's what had happened to mine when I got the car.

If it is loose enough, this has not done your gears or bearings any favors. If this is what has caused your problem, now is a good time to get those gears and have it all rebuilt. Check with Jegs or Summit, but if memory serves the gears are around $150, install kit (bearings, gasket, seals, everything to install the gears) around $100. Installation I've been quoted $300 labor by a good shop, others have said as little as $150 - check around.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.

 

Ok, thanks for replying, I'll check it out.