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Since 1952

GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline

SAME DAY SHIPPING! Order within the next 12 hours 39 minutes and receive same day shipping

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GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline

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Please NOTE the following about this product:

  • This item is sold as a set.



Q & A

What's in the Box

Everything you need for a complete ring and pinion installation job.

Kit Includes:

  • cover gasket
  • crush sleeve
  • marking compound and brush
  • pinion and carrier bearings
  • pinion nut and washer
  • pinion seal
  • thread locking compound
  • sealer

Note: Pinion-depth shims are not included. 

Item Details

30 Spline Pinion

Customer Reviews

Rated 2 out of 5 by 1 reviewers.
1 reviews
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1 Star


Gets the job done

August 20, 2012
Not a good kit if you want everything you need to install a new ring and pinion. If you don't mind buying carrier shims separately and have a few large impact sockets to chose from this is a decent kit.
No, I would not recommend this product.
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910-48601 Instructions (PDF)

Item Details

8.5" ring gear, 28 spline
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Many ratios to choose from.

  • 8.50" diameter ring gear
  • 1.625" diameter pinion
  • 10 ring gear bolts
  • 10 cover bolts
  • 30 pinion splines
  • Uses LH thread ring gear bolts - 7/16"-20

Note: When replacing a stock 2.56 (or numerically lower) ratio, the carrier must also be replaced with a 2.73 or higher ratio's carrier to compensate for the difference in ring gear thickness.

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