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Part # 91045100

Currie 9 Inch Ford Hot Rod Rear Axle Rearend Housing Kit

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  • Housing measures a total of 56" from axle face to axle face
  • Housing is 50-1/2" from outside housing flange to outside housing flange
  • The axles are drilled for 5 x 4-1/2" Ford/Mopar and 5 x 4-3/4" Chevy/GM bolt patterns

$1,190.99

each

In Stock


Quantity

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Product Summary

Ford 9 Inch, Rear Position, Semi-Floating Axle Type

  • Housing measures a total of 56" from axle face to axle face
  • Housing is 50-1/2" from outside housing flange to outside housing flange
  • The axles are drilled for 5 x 4-1/2" Ford/Mopar and 5 x 4-3/4" Chevy/GM bolt patterns
  • Kit includes wheel studs, 1/2"-20 Ford and 7/16"-20 Chevy
  • Features 1/4" heavy duty late model large bearing style retainer plates

Comes as a Kit

Key Specs

BrandSpeedway Motors
PositionRear
Axle TypeSemi-Floating

Need To Know

This Product Will Ship Free

Quick and Easy Returns

Details

Currie's Universal Hot Rod Ford 9" kit includes a brand new 56" housing, lifetime warranty 31 spline axles, new axle bearings and seals, and new style big Ford ends. 

  • Housing is 56" from axle face to axle face
  • Housing is 50-1/2" from outside housing flange to outside housing flange
  • Axles drilled for 5 x 4-1/2" Ford/Mopar and 5 x 4-3/4" Chevy/GM bolt patterns
  • Includes wheel studs, 1/2"-20 Ford and 7/16"-20 Chevy
  • 1/4" heavy duty late model large bearing style retainer plates

Note: Axle bearing does not come pressed onto the axle shaft, and wheel studs are not installed. Third member not included.

Installation Notes:

When installing new axles in rearends with posi traction differentials, be sure to install the driver's side axle first to keep the splines properly aligned.  Failure to do so may move the two splined gears out of alignment, and it may be difficult to install the driver's side axle properly if the passenger side axle is already installed.

Ifinstallation of passenger side axle is done first it may require two people when installing the driver's side axle, with both parties rotating reach axle until splines are in line and the driver's side axle fully sides into the housing.

To ensure you get the most out of your new 9 Inch components, Currie recommends that you perform a proper break-in process:

  • Use a name brand mineral-based gear oil, preferably 85w140 (Extremely high quality synthetic oils may be used once break-in process has been successfully performed)
  • Place vehicle on jack stands and let the rearend spin while the vehicle idles - run transmission in both forward and reverse periodically throughout the process
  • Continue to run the rearend until the pinion gets hot (place hand on bottom of the differential housing to verify this)
  • Proper break-in allows:
    • The ability to install new axles and hit the track the same day without worry
    • Extended life for rearend components
    • Keeps the quality and life of your gear oil

Note: If you find that your rearend is running somewhat "tight" be sure to addCurrie's 9+ Friction Modifierto "loosen up".  If a more aggressive performance is desired, Friction Modifier is not needed.

Application

  • 2.500" brake spacing offset
  • 2.800" axle register diameter

Charts

Specs

  • 2.500" brake spacing offset
  • 2.800" axle register diameter

Specifications

KEY SPECS
BrandSpeedway Motors
PositionRear
Axle TypeSemi-Floating
GENERAL
Overall Width56"
Differential IncludedNo
Ring Gear Size9 Inch
FinishNatural
Axle Splines31
Bolt PatternDual: 5 on 4.5" | 4.75"
Sold in QuantityKit
Bearings IncludedYes
Rotors IncludedNo
Thread Pitch="1/2"-20 & 7/16"-20"