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Home > GM 8.5" 10 Bolt

GM 8.5" 10 Bolt / Posi / Gears / Bearing Kit / Package

Part Number GM85-PGBK
review 7 Review(s)
GM 8.5" 10 Bolt / Posi / Gears / Bearing Kit / Package
GM 8.5" 10 Bolt Posi, Gears & Bearing Kit
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Axle Spline Count
28 Spline
30 Spline
Gear Ratio
3.55 [+$75.00]
4.10 / 4.11
4.30 [+$75.00]
Solid Pinion Spacer Upgrade
No Thanks
Yes Please [+$15.00]
Add to Wish List
  • GM 8.5" 10 Bolt Eaton Style Clutch Posi Unit
  • GM 8.5" 10 Bolt Ring & Pinion Gear Set
  • GM 8.5" 10 Bolt Master Bearing / Install Kit
  • Optional Upgrade to Solid Pinion Spacer
  • All Parts Include 1 Year Manufacturers Warranty
Any Questions? Have us call you.

Customer Reviews View All Reviews
Rating posi,gears and bearing kit for 8.5" 10 bolt stock nova rearend was a great value !
This kit was perfect for my 1975 nova. The price was cheaper than I could find anywhere online and the kit is of great quality. The crush sleeve was a little tough at first to torque but all else was a breeze. Great customer service. I e-mailed quick performance a question and instantly got a call from the company with my answer. Awesome company and awesome products ! Thanks. 75novacustom
  Did you find this helpful?    60 of 65 Found Helpful
Reviewed by:  from Sigourney/Delta . - 12/23/2014
Rating Recent purchase
Bought a Positraction unit with 3.73 Ring/Pinion. Really great people to deal with and very accommodating when I decided I wanted the 3.73 instead of the 3.42 originally ordered. Shipping was prompt and well packaged. Definitely will do business again.
  Did you find this helpful?    17 of 18 Found Helpful
Reviewed by:  from Paris, TN. - 4/7/2015
Rating Very pleased with the product. Reasonably priced.
I have finally been able to test out the new gear setup. My 1979 Trans Am is running a 383 Stoker 426HP, TH350 Street/Strip Auto Trany, with your Yukon Posi Unit with 3.73 Gears. Very pleased with the product. Reasonably priced. Thank you, Michael
  Did you find this helpful?    12 of 14 Found Helpful
Reviewed by:  from Minnesota. - 9/3/2015
Rating Purchase of a GM 8.5 10 bolt 3.08 Posi Gears & bearing kit
Although I have not got the vehicle running yet, my experience with QP was excellent. In fact I had a to call for some technical assistance and they were very courteous and professional. I will definitely recommend these guys to everyone! Great buying experience!
  Did you find this helpful?    8 of 10 Found Helpful
Reviewed by:  from Madison, Alabama. - 5/14/2016
Rating Very happy with the product
I am very happy with quick performance the package arrived on time the parts all worked excellent
  Did you find this helpful?    7 of 8 Found Helpful
Reviewed by:  from bakersfield ca. - 4/11/2016
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