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Ford Racing 3.73 Gears (79-85 V8)

Item 50351G87
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AmericanMuscle no longer carries the Ford Racing 3.73 Gears (79-85 V8). Please check out 1979-1993 Foxbody Mustang Drivetrain for an updated selection.
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    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation

    Features

    • Ford Racing Quality
    • Strong Forged Construction
    • 3.73 Gear Ratio
    • 7.5" Ring Gear Diameter
    • For Street or Track Use
    • Fits 1979-1985 V8 Mustangs

    Description

    Improve ET's And Low End Torque. Are you looking to get more low end grunt off the line and lower your ET's at the same time? Then look no further than installing a set of steeper gears in your Pony. Ford Racing Ring and Pinion Gears are perfect for street, road, or race use.

    Superior Quality. These Ford Racing 3.73 Mustang ring and pinion gears feature a super strong forged construction, CNC cut & lapped gear teeth, and a black oxide finish to resist corrosion.

    Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a new Speedometer Gear is an inexpensive way to fix this issue.

    Application. This Ford Racing 3.73 Ring and Pinion Gear set will fit all 1979 to 1985 V8 Mustang models equipped with a 7.5" rear end. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

    Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations.

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Ring gear
    • (1) Pinion gear

    Tech Specs

    Approximate RPM for 1979-1985 GT


    Manual
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3876 5427 6977      
    2 2289 3205 4120 5036 5951 6867
    3 1100% 2142 2754 3366 3978 4590
    4 1150 1610 2070 2531 2991 3451
    5 771 1079 1387 1695 2004 2312


    Automatic
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 2761 3865 4969 6073    
    2 1687 2362 3037 3712 4386 5061
    3 1150 1610 2070 2531 2991 3451
    4 767 1074 1380 1687 1994 2301
    4.9

    Customer Reviews (31)

    Questions & Answers

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