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

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#91910

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

  • Change the gear ratio of your 1970 to 1996 GM car equipped with a 8.5" 10 bolt rear end
  • These ring and pinion sets are manufactured to meet exact specifications to ensure a quality product every time
  • 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
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$235.99

/set

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Product Summary

  • Change the gear ratio of your 1970 to 1996 GM car equipped with a 8.5" 10 bolt rear end
  • These ring and pinion sets are manufactured to meet exact specifications to ensure a quality product every time
  • 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
  • Uses LH thread ring gear bolts - 7/16"-20 LH such as part number 5502092G
  • 30 pinion splines
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Key Specs

MFG. Part #Select Ratio
BrandSpeedway Motors
RatioSelect Ratio
See more specs

Need To Know

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855.313.9176
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Details

Many 8.5 Inch ring and pinion ratios to choose from.

  • 8.50" diameter ring gear
  • 1.625" diameter pinion
  • For rear axle application that uses 10 ring gear bolts & 10 cover bolts
  • 30 pinion splines
  • Uses LH thread ring gear bolts - 7/16"-20 such as 5502092G
  • 8.5 R&P

 

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

-583 is Garage Sale Clearance priced!

Specs


Specifications

KEY SPECS
MFG. Part #Select Ratio to see
BrandSpeedway Motors
RatioSelect Ratio to see
GENERAL
Ring Tooth CountSelect Ratio to see
Pinion Tooth CountSelect Ratio to see
Shaft Diameter1.63"
Outside Diameter8.50"
Spline Count30
Material TypeSteel
NotesInside thickness of ring gear is 1.7"
Sold in QuantitySet

Ratings & Reviews

4.8

12 Reviews

Overall Assessment

Customers consistently praise the product for its excellent fit and easy setup process, utilizing high-quality and efficient gears. Users mention that installation is straightforward, with correct spacing numbers and a lack of sharp burrs. The product is deemed practical, even winning competitions on the first night with the new gears equipped. Additionally, the product's fitment seems to pose no issues, going in smoothly in every situation. The product, often used in weekend racers, presents a compelling mixture of quality, performance, and value for money. The precise cut of the gears is a bonus, contributing to a flawless pattern. Overall, customer feedback is positive, with many stating they would buy the product again.

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4.8

12 reviews

5

10

4

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Used in my 1971 Camaro

5.0

a year ago

John

Long Island, NY

Verified

Works great

Would Recommend

Nice fit. Good gears. Easy set up.

5.0

5 years ago

J.P.

Warrenton MO.

Verified

Good gears. Nice fit

Would Recommend

I would buy this product again

5.0

5 years ago

none

North Dakota

Verified

Went in Very good

Would Recommend

yes

5.0

8 years ago

Ben

wilburton oklahoma

Verified

everything fit well

Would Recommend

Awesome product

5.0

8 years ago

Wild Wilsons

Taylorville, IL

Verified

Speedway is awesome! Great products awesome shipping! Always here before the date they tell you!

Would Recommend

I would buy this product again.

5.0

8 years ago

arch.

trenton,fl.

Verified

Every thing went well,except you need to send shims withproduct.

Would Recommend

Good Ring Gear & Pinion

4.0

8 years ago

Moses

Fayetteville, Arkansas

Verified

These cheaper gears set-up great, pattern was perfect. I'll use them again.

Would Recommend

Customer review image

Worked great

5.0

11 years ago

None

Spring run Pa

Verified

Great product , we won the first night with the new gears

Would Recommend

great fitment

5.0

11 years ago

richz28

Oxford, PA 19363, USA

Verified

This gears went right in with no issues... I received them on time...

Would Recommend

Good product

5.0

13 years ago

HrdRckMnr88

Nevada

Verified

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.

Would Recommend

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Showing 10 of 12 reviews

Questions & Answers

6 Questions • 6 Answers

Who made these gears? What brand are they?

by Artshouldntbetooshort

• 13 years ago

1 answer

View Answer

will the 5.57 gear work on the 2.73 carrier

by booger

• 13 years ago

1 answer

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will the 5.57 gear work on a 2.73 carrier

by booger

• 13 years ago

1 answer

View Answer

WHO MAKES THIS GEAR?

by ROOKIE

• 14 years ago

1 answer

View Answer

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

by dirty charlie

• 14 years ago

1 answer

View Answer

You do not list chevy k10 pickups?

by none

• 15 years ago

1 answer

View Answer

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