Products to Compare (max of 3)
X
Compare These Parts
ALWAYS SECURE
America's Oldest Speed Shop ® Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Filters
Menu
Help Center
Help Center
x
Help Center

U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
Menu
x

1970-96 GM 10 Bolt 8 1/2 Inch Ring and Pinion, 8.5 R&P

SAME DAY SHIPPING! Most orders ship within 24 hours.

Free Shipping Free Shipping
Specs
Sold in Quantity:
Set
Spline Count:
30
Ratio:
-
Shaft Diameter:
1.63
Outside Diameter:
8.50
Notes
Inside thickness of ring gear is 1.7"
1970-96 GM 10 Bolt 8 1/2 Inch Ring and Pinion, 8.5 R&P

Click image to enlarge

Details

Reviews (5)

Q & A (6)

What's in the Box

Info

Many 8.5 Inch ring and pinion 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
  • 8.5 R&P

Note: When replacing a stock 2.56 (or numerically lower) ratio 8.5 Inch Ring and Pinion, the carrier must also be replaced with a 2.73 or higher ratio's carrier to compensate for the difference in ring gear thickness.

Application

  • Buick Full Size 1977-1996
  • Buick Electra 1976-1978
  • Regal 1973-1977
  • Century 1973-1977
  • Skylark, GS 1971-1975
  • Skylark, GS 1977-1979
  • Chevy Full Size Car 1971-1996
  • Chevy II 1971-1979
  • Nova 1971-1979
  • Camaro 1971-1981
  • Firebird TA 1971-1981
  • Cutlass 1971-1977
  • El Camino 1971-1977
  • Monte Carlo 1971-1977
  • Impala 1991-1996
  • Olds Full Size 1971-1989
  • Pontiac  Full Size 1971-1989
  • Grand Prix 1971-1977
  • Lemans 1971-1977
  • GTO 1971-1977
  • Ventura 1971-1977

Specs


Warranties

Note: Circle track racing applications require a minimum of 4 qts. of rear end lube. Using less than this amount will lead to immediate pinion bearing failure.

Customer Reviews

Rated 4.8 out of 5 by 5 reviewers.
RATING BREAKDOWN
5 reviews
5 Stars
4
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

None
Verified Purchaser
Spring run Pa

Worked great

June 23, 2015
Great product , we won the first night with the new gears
Pros:
  • Excellent product
Cons:
  • None
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

richz28
Verified Purchaser
Oxford, PA 19363, USA

great fitment

March 04, 2015
This gears went right in with no issues... I received them on time...
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

HrdRckMnr88
Verified Purchaser
Nevada

Good product

August 28, 2013
Install was efficient as spacing numbers were correct, no sharp burrs, price was good. Didn't have the time to check and see if all parts are American Made.
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

OG
Verified Purchaser
Chandler AZ

Good product.

November 20, 2011
Product used in weekend racer.
Pros:
  • Durable
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

WWRA 22 Valley Stock
Verified Purchaser
Lake Stevens WA

Nicely cut gears

June 11, 2011
[...]
Pros:
  • Durable
  • Easy To Install
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Page 1 of 1

Product Q&A

6 questions : 6 answers

1 answers

Who made these gears? What brand are they?

Artshouldntbetooshort
August 24, 2013

Who made these gears? What brand are they?

Answers

August 26, 2013
Jason
The GM 10 bolt 8-1/2: ring and pinion comes from Richmond/Motive Gear.
1 answers

will the 5.57 gear work on the 2.73 carrier

booger
ga
April 16, 2013

will the 5.57 gear work on the 2.73 carrier

Answers

April 17, 2013
EricM
Yes it will work with the 2.73 carrier.
1 answers

will the 5.57 gear work on a 2.73 carrier

booger
ga
April 16, 2013

will the 5.57 gear work on a 2.73 carrier

Answers

April 17, 2013
EricM
Yes it will work with the 2.73 carrier.
1 answers

You do not list chevy k10 pickups?

none
sioux city iowa
July 22, 2011

You do not list chevy k10 pickups?

Answers

July 25, 2011
John
This ring and pinion does include some truck applications and a full list of applications is as follows: K10, K15 77-87 K10, K15 82-Pres. K20, K25 77-87 C10, C15 78-Pres. G10, G15 79-Pres. G20, G25 79-Pres. Buick Full Size 77-96 Blazer 77-91 Apollo 73-77 Regal 73-77 Century 73-77 Biscayne 71-74 Grand National 84-87 Skylark, GS 71-75 Skylark, GS 77-79 Chevy Full Size Car 71-96 Chevy II 71-79 Nova 71-79 Camaro 71-81 Firebird TA 71-81 Cutlass 71-77 El Camino 71-77 Monte Carlo 71-77 Electra 76-78 Gran Sport 73-77 Impala 91-96 LeSabre 73-74 Olds Full Size 71-89 Pontiac Full Size 71-89 Hurst Olds 85-89 Omega 73-75 Omega 77-79 Grand Prix 71-77 Lemans 71-77 GTO 71-77 Roadmaster 71-74 Roadmaster 91-96 Ventura 71-77 Phoenix 71-77
1 answers

I bought 5.38 8.5 ring gear & cross pin from you last week I'm getting ready to put it in I've got a 2.73 carrier will it work or do I need a space? I have a 3.08 carrier but it is in another car and I don't want to take it out.I've herad it needs to be a

dirty charlie
Lake Butler,FL.
January 23, 2012

I bought 5.38 8.5 ring gear & cross pin from you last week I'm getting ready to put it in I've got a 2.73 carrier will it work or do I need a space? I have a 3.08 carrier but it is in another car and I don't want to take it out.I've herad it needs to be a

Answers

January 25, 2012
Eric
Yes your 2.73 carrier will work with the 5.38 ring & pinion. The only reason you would need a spacer or to change the carrier is if your 8.5 10 bolt rear end had 2.56 or numerically lower gear ratio originally.
1 answers

WHO MAKES THIS GEAR?

ROOKIE
October 01, 2012

WHO MAKES THIS GEAR?

Answers

October 01, 2012
Jason
This ring and pinion is from Motive or Richmond Gear
Page 1 of 1

You may also be interested in:

  • DVD - Richmond Gear Installation Instruction DVD - Richmond Gear Installation Instruction
    View
    (2)
    $19.99
    Compare
  • Cross Pin GM 10 Bolt 8 1/2 Inch Ring & Pinion Cross Pin GM 10 Bolt 8 1/2 Inch Ring & Pinion
    View
    (0)
    $24.99
    Compare
  • GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline
    View
    (1)
    $74.99
    Compare
  • Lubrication Engineers SAE 90 Weight Gear Oil, 1 Gallon Lubrication Engineers SAE 90 Weight Gear Oil, 1 Gallon
    View
    (2)
    $54.99
    Compare
Suggestions For You