Bulletproof Foundation for Your Ford 9 Inch Build

Start your 9 Inch axle build with a strong foundation. Our all-new, redesigned Ford 9 Inch center sections are stronger than factory Ford carriers and fit into most Ford 9 Inch axle housings (car/truck/van).  Standard 3.062” differential carrier bearings fit this center section, allowing the use of 28, 31 or 33-spline axle shafts.

When it comes to strength, versatility and ease-of-service, the Ford 9 Inch is unmatched. The front-loaded third member (“pumpkin”) is easily removed for gear changes or service. Ford took a good design and improved it to handle the demands of NASCAR and NHRA drag racing in the 1960’s by introducing carriers made of nodular (ductile) iron. These “N” cases offered more strength than traditional “gray” iron and withstood higher shock loads delivered by the new, high-horsepower engines – with less gear deflection and less chance of failure. The N case was the choice of Ford’s HiPo offerings like 406 Galaxies, 427 Fairlanes, “Drag Pack” 428 Cobra Jets, and Boss 429 Mustangs.

NEW, Redesigned and Reinforced Nodular Iron Housing

While original Ford N cases are still great, they’re getting hard to find. Ordinary Ford carriers, such as casting C7AW-E shown on this page, are made from grey cast iron which is brittle. This makes them more likely to crack and subsequently fail when subjected to high loads. We’ve put decades of experience to work, correcting these deficiencies in this popular axle platform. In fact, our carrier has already been proven on both dirt and asphalt tracks across America.

Our Ford 9 Inch carrier is a NEW casting with over 4 lbs. of material added in critical areas. Extra ribbing reinforces the case and rearmost pinion support (pilot bearing). Thick, forged steel bearing caps surround the carrier bearings, all securely held in place with Grade 8 cap screws. The improvements continue with rugged billet steel adjuster nuts and heavy-duty keepers to ensure your ring gear settings are maintained. All mounting surfaces are precision machined to ensure a consistent, flat surface for a positive gasket seal (no more leaks on your shop floor). An oil fill plug is included.

Works with OEM and Aftermarket Ford 9 Inch Axle Housings

Best of all, our nodular Ford 9 Inch carriers work with both OEM and aftermarket 9 Inch axle housings. The 3.062″ carrier bearing size supports 28, 31 or 33-spline axle shafts. The carrier accepts gears up to 5.43:1 ratio without any internal clearancing (and up to 7.33:1 with some minor grinding). Speaking of gears, be sure to cap your new gear set with our nodular iron Daytona pinion bearing support. This rugged unit is cast from the same material as the carrier and features big diameter bearings, ensuring there are no weak links in your driveline combination.

• Fits both OEM and aftermarket Ford 9 inch axle housings
• Use 3.062” O.D. carrier bearing (factory Ford “big bearing” carrier)
• Works with 28, 31 or 33-spline axle shafts (with proper bearing)
• Nodular iron material has more desirable grain structure to resist fractures
• Withstands higher shock loads & is more resistant to fatigue than gray iron castings
• Housing is reinforced in many areas (extra ribbing, thicker bulkheads, bearing support webbing)
• Casting weighs 29.7 lbs. (4 lbs. more than ordinary Ford C7AW-E carriers)
• Additional “pilot” pinion support webbing, addressing a weak point on factory castings
• Accepts gears up to 5.43:1 (up to 7.33:1 with minor grinding)
• Precision milled mounting surfaces to stop leaks on your shop floor
• Forged steel bearing caps are secured with Grade 8 1/2”-13 cap screws
• Billet steel adjuster nuts and heavy duty keepers maintain critical gear tooth settings
• Accepts standard 9” & Daytona pinion bearing supports
• Oil fill hole in factory location for easy service
• IMCA approved

DAYTONA PINION SUPPORT

“Daytona” pinion bearing supports use larger bearings and strengthen a known weak point on Ford 9-inch axle assemblies. Designed by Ford in the 1960’s to take the punishment of NASCAR racing, the larger bearings of the Daytona pinion support significantly reduce pinion gear deflection to improve durability. Gear deflection occurs when the pinion shaft moves out of alignment under heavy loads, causing the tooth contact pattern to change. Reduced tooth contact (under heavy load) with the ring gear typically leads to catastrophic axle failure.

Daytona pinion bearings are set up differently than traditional Ford 9-Inch pinions you’ll find under most cars, trucks, and vans (but they’ll easily adapt to all of them). By using bearing spacers with shims rather than a traditional crush sleeve, the solid spacer and shim pack won’t deform under load. This maintains critical depth settings which helps preserve that important tooth contact pattern.  Plus, this set-up makes gear ratio swaps, yoke upgrades and third-member rebuilds much easier. Just re-insert the shims and torque the pinion nut to set pinion depth! Fits all 1.218” 28-spline Ford 9-inch pinion gears.

The benefits of Daytona bearing retainers don’t end there. Our Daytona pinion support features a beefed-up nodular iron housing. Nodular iron, also known as ductile iron, has greater tensile strength and is less prone to fracturing than ordinary “gray” cast iron. Plus, larger oiling channels ensure more gear oil flows across the bearing, extending bearing life. Milled gasket surfaces ensure a leak-free seal.

Whether you’re upgrading an OEM Ford 9-inch or building a stout rear end from the ground up, don’t take shortcuts! Improve reliability and longevity with a nodular iron Daytona pinion bearing support.

• Increases durability and strengthens a known weak point in Ford 9-inch axle assemblies
• Larger bearing adds strength, reduces gear deflection in high horsepower/torque applications
• Uses bearing spacer/shim combo in place of the crush sleeve
• Makes third member rebuilds, gear changes and yoke changes much easier
• Nodular (ductile) iron housing is stronger than “gray” iron and less prone to fractures
• 5.85 lb. casting is heavier and better reinforced than OEM Ford retainers
• Bigger oiling channels extend bearing life
• Milled gasket surfaces for a leak-free seal
• Works on all standard 28-spline 1.218” Ford 9-inch pinion gears
• Easy upgrade for all OEM Ford 9-Inch third member carriers
• Bearings, races, spacers, and shims sold separately

 

SPEEDWAY TL CLUTCH STYLE DIFFERENTIAL

Improved Traction at a Great Value

Get the traction benefits of a limited slip differential, quiet operation and a great value with our Clutch Style Differential for Ford 9 inch rear ends. Our clutch style posi-traction differential is a welcome alternative to expensive locker & spool differentials which are often overkill and more than the common street car requires.

Based off the original OEM limited slip designs, we’ve drawn from millions of miles of experience and improved these already reliable designs with increased holding power from a redesigned spring loaded clutch pack—suiting it well for heavy-duty street car applications.

Street Tough Design, Quiet Operation

Our clutch style differential works with any factory Ford 9 inch differential case, gear, axles and bearings. A forged steel case and heat-treated spider gears ensure reliability. The clutch design gives quiet operation, with no clicking when disengaging for corners.

This differential has performed well in our Week to Wicked 1952 Chevy Truck, easily handling the job of transferring a 430 HP GM Performance LS3 to the ground. When you want the traction benefits of a limited slip differential in your Ford 9 inch rearend without the expense and noise of a full-locker unit, our clutch style differentials are just the ticket.

• 31 spline
• Works with factory 9 inch Ford differential case, gear, axles and bearings
• Spring loaded clutch pack with improved grip over OEM designs
• Time tested, proven reliability
• Forged steel case
• Heat treated spider gears
• Quiet operation, no clicking when disengaging for corners
• Ideal for street tires and medium horsepower applications

YUKON GEAR

Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing processes, backed by 2 in-house quality labs to ensure each item manufactured meets exacting specifications & quality standards. Yukon designed gear tooth surface finish reduces both friction & heat for long races & high torque conditions. We use high grade steel in both the ring & pinion, with fitment designed to OEM specs. Go ahead, add loads of horsepower & go big on tires because Yukon offers the widest selection of gear ratios to choose from.

• Fits Ford 9″
• 9.00″ ring gear diameter
• 28 spline pinion
• 10 ring gear bolts

YOKE

Stop scrounging the junkyard for those hard to find Ford pinion yokes. Whether you’re rebuilding a stock unit for your favorite old Ford, or putting the final touches on that “bullet-proof” Ford 9-inch third member build, start fresh and save time with a new Speedway Motors Forged Short Pinion Yoke.

We replicated the original “short” 4-inch length yoke found on many late model Ford cars and trucks and updated it using modern forged carbon steel. Whether you’re restoring a vintage 1950’s-80’s Ford or Mercury to OEM specs or hooking up that ground-pounding, high-horsepower custom build – our forged pinion yoke can handle it.

This yoke will fit any Ford 9-inch with a 28-spline, 1.218” diameter pinion gear, and uses common 1310 series U-joints (91048315). Machined relief cut provides for simple, bolt-on installation when used with an OEM standard or our Daytona-style pinion support (91048399) on your Ford 9-inch third member assembly.

Note – Speedway Motors Differential 3rd members come with a 1310 Universal Joint (U-Joint) series yoke. No other Yoke size options are available. 

1310 series U-Joint and Bearing Cap Reatainers Not Included – Sold Seperatly

Step up to a modern, easy-to-install and durable solution for your Ford 9-inch rebuild by choosing a Forged Pinion Yoke from Speedway Motors.

• Re-creation of the original Ford 9-inch “short” pinion yoke
• Made out of forged carbon steel for strength and durability
• Modern forged steel offers far more value than a junkyard yoke
• Machined relief cut to clear standard and Daytona pinion supports
• Fits all 28 spline 1.218” Ford 9-inch pinion gears
• Uses common 1310 series U-joints

• 9190950-31S
  • Carrier bearing # LM603049 (CONE) and LM603011 (CUP) TM88048 (CONE)
  • Outer pinion bearing TM88010 (CUP)
  • Large “Daytona ” inner pinion bearing HM89443 (CONE)
  • Race # HM89410 (CUP)
    • LM603049 CONE ID: 1.781 “
    • LM603011 CUP OD: 3.063 “
    • TM88048 CONE ID: 1.308 “
    • TM88010 CUP OD: 2.687 “
    • HM89443 CONE ID: 1.308 “
    • HM89410 CUP OD: 3.00 “