Direct fit bare steel Ford 9-inch axle housing for 55-57 Chevy cars with axles, bearings, and hardware, Maintains factory hub to hub dimensions and utilizes stock leaf spring and shock mounting locations, Includes 31 spline performance axle package with new bearings, seals, retainers, and T-bolts, New Big Ford (Torino) style bearing ends accepts 2.5\" offset brakes (sold separately), Retains factory GM 5 on 4-3/4\" wheel bolt pattern with 1/2-20 thread wheel studs preinstalled 1955-57 Chevy Car Ford 9 Inch Rear End Swap Kit with Axles, Bare Sku # 99005557 Mfr. Part # 99005557 Condition New Brand Speedway Motors Sold Each Details
- Housing length: 54 1/2 inches (from flange-to-flange).
- Total wheel-to-wheel mounting surface width is 59 1/2 inches (from hub-to-hub).
- Direct replacement Ford 9-inch housing rear end for your Tri-5 Chevy
- Pre-welded mounting pads retain stock spring mounting location
- Uses factory shock mounting location to retain stock shock length
- 9-inch housing features stock 55-57 Chevy car rear end width flange to flange for perfect fit
- Works with any Ford 9-inch housing center section (sold separately)
- Big Ford new style “Torino” axle flange accepts drum or disc brakes
- New 31 spline axles (lengths of 26-7/8\" & 31-1/8\") come with bearings, lock rings, axle seals, and wheel studs installed
- Axles feature 5x4.5 and 5x4.75 GM car dual bolt patterns with 1/2-20 threaded studs
A Direct-Fit Ford 9-inch Rear End Housing for Your Tri-Five Chevy Build
There is certainly no denying the popularity of Ford’s venerable 9-inch rear axle when it comes to high performance street and racing applications. It is probably a safe bet there are more non-Ford vehicles on the road (and track) with a Ford 9-inch rear end under them than Ford ever shipped off their assembly lines! That is saying a lot right there. From the stronger housing design to the huge aftermarket support in axles, differentials, ring and pinion gears, and more, the Ford 9-inch rear end is the performance axle housing to use, without a doubt.
For those building up the famed 55-57 “Tri-Five” Chevy, Speedway Motors offers a bolt-in 9-inch Ford rear end housing for your build that is a direct swap for stock 55-57 Chevy rear ends. This housing is made from premium steel and is fully welded, including brand new “Torino” big Ford axle housing ends. The housing maintains the 55-57 Chevy car rear end width and retains the stock shock mount locations as well. The axle’s leaf spring mounting pads are welded in their stock mounting location. This allows you to retain stock ride height characteristics or you can lower the rear of your Tri-Five Chevy via Shop 55-57 Chevy Lowering Leaf Springs, shackles, or other options.
Includes Fully Assembled Axles Ready for Your Differential and Center Section
Our 55-57 Tri-5 Chevy 9-inch rear end housing package includes strong 31-spline performance axles with bearings and bearing lock rings already pressed into place on the axles. The axles feature dual Ford/Chevy bolt pattern of 5 on 4-3/4 and of 5 on 4-1/2 with 1/2-20 press-in threaded studs preinstalled in the 5 on 4-3/4 GM pattern. Finally, we include the axle retainer brackets and the correct 9-inch T-bolts and nuts to secure the axles and your drum or disc brake kit of choice.
Additional hardware includes 10 press-in studs with nylon locking nuts for the main housing to center section assembly, and a screw in axle vent fitting. All your new Ford 9-inch housing needs for completion is a complete center section with your choice of Shop 9-Inch Ford Differentials and Shop 9-inch Ford Ring & Pinion Gear Sets and drum or Shop 9-Inch Ford Disc Brake Kits brake package. Our Shop Assembled 9-Inch Third Members/Center Sections are the perfect choice to finish your Tri-Five Chevy 9-inch rear end build. Replace your tired 55-57 Chevy car rear end with our Ford 9-inch rear end in your 55-57 Chevy while maintaining the stock rear end width and upgrade to the strength and vast options the Ford 9-inch offers.
Specs Sold in Quantity Kit MFG. Part # 99005557 Notes 1/2"-20 wheel studs, 2" long, 0.685" knurled Position Rear Overall Width 59.5" Axle Shafts Included Yes Axle Splines 31 Axle Type Semi-Floating Brakes Included No Third Member Included No Ring and Pinion Included No Wheel Studs Included Yes Wheel Stud Thread Size 1/2"-20 Wheel Bolt Pattern (in.) 5x4.5 in. | 5x4.75 in. Bearings Included Yes Seals Included Yes Differential Included No Material Type Steel Finish Natural Ring Gear Size 9 Inch Tube O.D. 3" Housing Material Steel Hardware Included Yes Rotors Included No Rotor Diameter Not Included Housing Color Natural Cut to Fit No Standard Pinion Location Centered Pinion / Offset 3rd Member Bolt Pattern 5 on 4.5" | 4.75" Reviews 57 Chevy 150 gasser Rated by Gasser Dave on June 10, 2026
Summary: Haven't installed yet but quality appears great
Yes, I recommend this product.
Nice quality parts! Rated by JohnBWy on August 19, 2025
Summary: I installed this differential housing in my 1956 Sedan Delivery. Was an easy install and fit perfectly.
Yes, I recommend this product.
i would buy again ,very good quality Rated by Ralph on August 06, 2025
Summary: Only problem was short side axle was 1 inch too short and did not engage into third member had to remove. Fortunately I live in AZ and was able to get a replacement from the store in town- be sure to measure before you install!-might have just been a fluke
Yes, I recommend this product.
I would buy again Rated by Sonny252 on April 05, 2025
Summary: Great Product perfect fit no problems with this unit
Yes, I recommend this product.
I would buy again Rated by den on March 24, 2025
Summary: great product fit like a charm highly recommend would buy again no problems at all
Yes, I recommend this product.
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