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Richmond Gear 79-0064-1 Ring and Pinion Gear Set 4.88 Ratio GM 8.5/8.6 10-Bolt

(Chevrolet Camaro 1967-72, Impala 1965-72, Malibu 1965-67, Chevelle 1964-73, Caprice 1966-72, El Camino 1965-72, Monte Carlo 1970-72 + 42 more models)

Part of: Richmond Gear PRO Gear Differential Ring and Pinion Sets

Other options in this family: Richmond Gear 7900171 Richmond Gear 7900801 Richmond Gear 7900431 Richmond Gear 7900451 Richmond Gear 7900791

Manufacturer

Picture for manufacturer Richmond Gear

Part Number

7900641
4 reviews
Sale Price

$504.30

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Richmond Gear 79-0064-1 Pro Gear ring and pinion set delivers professional-grade performance for GM 8.5-inch and 8.6-inch 10-bolt rear differentials. This gear set features a 4.88:1 ratio, making it an ideal choice for applications requiring improved acceleration, better engine RPM management with larger tires, or enhanced towing capability.

Key Features:

  • 4.88:1 gear ratio for aggressive performance and towing applications
  • Designed specifically for GM 8.5-inch and 8.6-inch 10-bolt rear axles
  • Pro Gear quality construction with precision-cut gear teeth
  • Heat-treated steel construction for maximum strength and durability
  • Matched and lapped ring and pinion set for optimal contact pattern
  • Ideal for off-road vehicles, rock crawlers, and heavy towing applications

Richmond Gear is known for manufacturing high-quality drivetrain components that meet or exceed OEM specifications. This ring and pinion set is engineered for vehicles that demand reliable performance under extreme conditions. Professional installation and proper setup with new bearings, seals, and gear oil is strongly recommended to ensure longevity and proper operation.

Products specifications

Fits

Chevrolet Camaro 1967-72, Impala 1965-72, Malibu 1965-67, Chevelle 1964-73, Caprice 1966-72, El Camino 1965-72, Monte Carlo 1970-72, Nova 1969-72, Chevy II 1965-68, Bel Air 1965-70; Pontiac GTO 1965-72, Firebird 1967-72 + 37 more models

Calculator

Gear Ratio Calculator

Carrier Series

4

Cover Bolts

12

Installation Kit Included

No

Notes

3.90:1 or numerically higher carrier.

Pinion Gear Teeth

8

Pinion Shaft Diameter (in)

1.625 in.

Pinion Spline Count

30

Quantity

Sold as a set.

Ring and Pinion Ratio

4.88:1

Ring Gear Bolts

12

Ring Gear Diameter (in)

8.875 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

39

Tool

Transmission Lookup

Pinion Gear Tooth Quantity

8

Ring Gear Diameter

8.875

Ring and Pinion Gear Ratio

4.88

Ring Gear Bolt Quantity

12

Cover Bolt Quantity

12

Differential Carrier Break

3.90 and Higher

Ring Gear Material

9310 Steel

Differential Case Design Type

GM 8.875 Car

Ring Gear Tooth Quantity

39

Pinion Shaft Diameter

1.625

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Position

Rear

Easy to deal with, lowest price and included quick shipping.

stil don't know

VERY QUICK AND EASY

Amazing prices and amazing shipping speed! Best all around. Will be ordering more soon!

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