Product Summary

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

  • Designed to replace the original '68-'72 GM A-Body rearend housing
  • Maintains factory hub to hub dimensions
  • All new stamped steel housing and fully welded 3" tubes - Bare steel
  • New Big Ford style ends - accepts 2.5" offset Ford style brake kits
  • New 31 spline axles with bearings installed 1/2" lug studs

Comes as a Kit

Key Specs

MFG. Part #99006872
BrandSpeedway Motors
Axle TypeSemi-Floating

Need To Know

This Product Will Ship Free

Shipping Policies & FAQs

Quick and Easy Returns

Return Policy


These bolt-in rear axle packages are designed to replace the original '68-'72 GM A-Body rearend housing and are compatible with the stock 4-link trailing arm rear suspension found in your Chevelle/Malibu/El Camino/Sprint/GTO/LeMans/Tempest/F85/Cutlass/442/Special/Skylark/Gran Sport. The major advantages gained by upgrading to a Ford 9" axle include a) greatly increased strength (reliability), b) the variability of the housing to accept almost any gear ratio from 2.47:1 to 6.14:1, c) a drop-out third member for ease of service, and d) steel axle retainers keep the axle/wheel in place in the event of axle failure. Here are the features you'll find in our fabricated Ford 9 Inch axle kits:

  • New stamped steel housing center piece
  • New billet steel housing ends with oil seal surface ("Big New Ford" Torino-style)
  • 3" O.D. DOM 3/16" wall axle tubes
  • 31-spline axles w/ bearings, studs & retainers
  • Axles have 2.5" of offest on each side
  • 1/2"-20 wheel studs, 2" long
  • 5 x 4-3/4" wheel bolt pattern
  • Jig welded suspension brackets for stock style suspension
  • Built to stock width
  • Works with most aftermarket coil-over conversion kits

Add third member and brake kit of your choice (both sold separately) to complete your installation.


MFG. Part #99006872
BrandSpeedway Motors
Axle TypeSemi-Floating
Differential IncludedNo
Ring Gear Size9 Inch
Axle Splines31
Bolt Pattern5 on 4.75"
Housing MaterialSteel
Wheel Studs IncludedYes
Hardware IncludedYes
Sold in QuantityKit
Bearings IncludedYes
Seals IncludedYes
Rotors IncludedNo
Thread Pitch="1/2"-20"