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Richmond Gear 79-0066-1 Pro Gear Ring and Pinion Set

(Ford F-150 1975-86, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1962-74, F-100 1975-83 + 22 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

7900661
5 reviews
Sale Price

$616.28

4 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Richmond Gear 79-0066-1 Pro Gear ring and pinion set delivers professional-grade performance for high-demand drivetrain applications. Engineered for both serious street performance and competitive racing, this gear set features precision-cut teeth and premium materials designed to handle increased torque loads and sustained high-RPM operation.

Key Features:

  • Pro Gear series construction for professional racing and performance applications
  • Precision-machined gear teeth for quiet operation and maximum strength
  • Heat-treated alloy steel construction for durability under extreme conditions
  • Designed for high-performance street and track use
  • Manufactured to OEM tolerances for proper fitment and longevity

Richmond Gear has been the choice of professional racers for decades, with proven victories at major racing events including the Daytona 500 and NHRA U.S. Nationals. Each ring and pinion set undergoes rigorous quality control to ensure optimal gear contact patterns and reliable performance.

Products specifications

Fits

Ford F-150 1975-86, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1962-74, F-100 1975-83, Fairlane 1957-70, Ranchero 1957-79, Torino 1968-76, Galaxie 1959-67, Gran Torino 1972-76 + 17 more models

Calculator

Gear Ratio Calculator

Cover Bolts

10

Installation Kit Included

No

Pinion Gear Teeth

7

Pinion Shaft Diameter (in)

1.313 in.

Pinion Spline Count

28

Quantity

Sold as a set.

Ring and Pinion Ratio

4.86:1

Ring Gear Bolts

10

Ring Gear Diameter (in)

9.000 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

34

Tool

Transmission Lookup

Pinion Gear Tooth Quantity

7

Ring and Pinion Gear Ratio

4.86

Ring Gear Tooth Quantity

34

Ring Gear Material

9310 Steel

Differential Case Design Type

Ford 9

Ring Gear Diameter

9

Ring Gear Bolt Quantity

10

Pinion Shaft Diameter

1.313

Cover Bolt Quantity

Dropout

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Position

Rear

I found autoplicity while trying to locate a side mirror for my vehicle. The website is user friendly and the prices are fantastic! The product is also shipped quickly... I am definitely going to purchase from Autoplicity again!

Great product at the lowest price with fast delivery...what more can you want! Highly recommend.

great prices and customer service was very helpful.

absolutely astonished at how profesional fast and great of an experience it was with autoplicity they will now be the goto for anything for my car. I got the AEM V2 boy oh boy forget what anyone says about cai not doing anything this thing has been phenominal since I got it!! Happy!!!!!

Great business to deal with! Notifies location an status of orders timely and efficiently

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