Description: 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 1970-1976 GM 10 Bolt 8.5 Ring & Pinion, 4.10 Ratio Sku # 91910-410 Mfr. Part # 91910-410 Condition New Brand Speedway Motors Sold Set Details Info 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 8.5 R&P Specs Application This Part Fits 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! Installation Tips 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. 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. Specs Material Type Steel Sold in Quantity Set Spline Count 30 Ring Tooth Count 41 Pinion Tooth Count 10 Shaft Diameter 1.63 Outside Diameter 8.50 Ratio 4.10:1 MFG. Part # 91910-410 Reviews Nice fit. Good gears. Easy set up. Rated by J.P. on January 25, 2021 Summary: Good gears. Nice fit Yes, I recommend this product. I would buy this product again Rated by none on January 11, 2021 Summary: Went in Very good Yes, I recommend this product. yes Rated by Ben on September 28, 2018 Summary: everything fit well Yes, I recommend this product. Awesome product Rated by Wild Wilsons on July 15, 2018 Summary: Speedway is awesome! Great products awesome shipping! Always here before the date they tell you! Cons: None Pros: Awesome Yes, I recommend this product. I would buy this product again. Rated by arch. on April 05, 2018 Summary: Every thing went well,except you need to send shims withproduct. Yes, I recommend this product. Related Items / Suggested Parts Cross Pin GM 10 Bolt 8 1/2 Inch Ring & Pinion GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 73 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
Price: 209.99 USD
Location: Lincoln, Nebraska
End Time: 2025-01-20T13:03:00.000Z
Shipping Cost: 0 USD
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Item Specifics
Return shipping will be paid by: Seller
Returns Accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Return policy details:
Brand: Speedway Motors
Type: Differential Ring & Pinions
Manufacturer Part Number: 91910-410
Item Length: 15.00
California Prop 65 Warning: True