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Richmond Gear 79-0001-1 Pro Gear Ring and Pinion Set Ford 9" 3.40 Ratio

(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

79-0001-1
12 reviews
Sale Price

$677.68

4 left at this price

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Usually delivered within 2 days

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Product Details

The Richmond Gear 79-0001-1 Pro Gear Ring and Pinion Set is a race-engineered differential gear set built for the Ford 9-inch differential housing with a 3.40:1 ratio. Featuring a 35-spline pinion and secured by 10 ring gear bolts, this set is purpose-built for high-demand racing environments where standard gear sets fall short.

Key Features:

  • Ford 9-inch differential application with 3.40:1 gear ratio
  • 35-spline pinion with special pinion support design
  • 10 ring gear bolts for secure, positive engagement
  • Manufactured from 9310 steel alloy — a softer, more malleable material engineered to resist breakage under harsh racing conditions
  • Up to 6 lbs of rotating weight reduction compared to standard gear sets for improved acceleration response
  • Ground pinion threads machined to gauge quality for precise, trouble-free installation
  • Special heat treatment process for enhanced strength and durability under severe thermal cycling
  • Designed for race use including hard launches and repeated heat cycling

Richmond Gear Pro Gear ring and pinion sets are engineered specifically for serious racing applications where hard launches and extreme heat cycling are routine. The use of 9310 steel alloy gives these gears superior resistance to breakage compared to harder, more brittle materials. With decades of proven performance at events including the Daytona 500 and U.S. Nationals, Richmond Gear remains a benchmark name in professional drivetrain performance.

Note: This set requires a special pinion support (sold separately). Intended for race use only.

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

Cover Bolts

10

Installation Kit Included

No

Pinion Gear Teeth

10

Pinion Shaft Diameter (in)

1.501 in.

Pinion Spline Count

35

Quantity

Sold as a set.

Ring and Pinion Ratio

3.40:1

Ring Gear Bolts

10

Ring Gear Diameter (in)

9.000 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

34

Pinion Shaft Diameter

1.875

Ring Gear Tooth Quantity

34

Pinion Gear Tooth Quantity

10

Ring and Pinion Gear Ratio

3.40

Cover Bolt Quantity

Dropout

Differential Case Design Type

Ford 9

Ring Gear Bolt Quantity

10

Ring Gear Diameter

9

Ring Gear Material

9310 Steel

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Position

Rear

Found the part quickly, ordered in minutes without getting the run around.

Great price,quick shipping.

Great company to deal with. Delivery was 2 days early...awesome.

Great!

It was great fast and easy!!!

Easy ordering and quick shipping. Overall an excellent experience.

Fast and easy, great price.

Tried to get this product through others with no luck. This was easy and quick to order.Thanks.

hope I do not have to return items due being sent wrong parts again still waiting on refund

typed it in google and came right up and ordering it was a simple click and entering in my info and it was done

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

Best prices on the internet and fast at getting the product out. Thanks!

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