Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Classic Truck Drivetrain At Speedway Motors

Speedway Motors is the classic truck enthusiasts source for pickup truck drivetrain components at everyday low prices! Select from a large assortment of slip yokes and ring & pinions to fit any need. Plus, you can find an assortment of gears and clutch hydraulic throwout bearings to fit your application, all in one stop. Speedway also has a great selection of classic truck rear end overhaul kits and accessories, too – from gears, axles and slip yokes to bearings and brackets. We can even set you up with a complete Ford 9'' or a quickchange rear end!

"Classic Truck, Differential" Page 1 of 4

  • New 9 Inch Ford Iron Carrier Housing w/3.062 Inch Caps
    New 9 Inch Ford Iron Carrier Housing w/3.062 Inch Caps
    SKU-91048390
    x
                

    If you have built anything that has serious horsepower you know the weak link can be the stock Ford 9" carrier. The pinion area tends to be weak and if you throw enough power at it, it will break. That won't happen with this brand new housing. 

    This new cast iron housing is built to take street/strip abuse without the fear of breaking. Case has forged caps and extra beef where it's needed. Most stock differentials use the 3.062" o.d. bearings # TLM603049 w/ 1.781" i/d. You should also add a new heavy duty cast iron pinion support while you're at it. 

    • Forged Steel Caps
    • 1/2" Allen head grade 8 bolts
    • Heavy Duty Housing - 36 lbs.
    • Good for 1100 plus horsepower 
  • Bare 60 Inch Centered 9 Inch Ford Housing
    Bare 60 Inch Centered 9 Inch Ford Housing
    SKU-91046115
    x
                

    Our economical 9" Ford rear axle housing features a reclaimed center section, new 3" axle tubes, and new-style Ford ends. Total track width is 60" from hub-to-hub. You will need one 28-3/8" long axle and one 30-5/8" long axle.   Includes 8 T-bolts for the axle bearing retainer plates and 10 studs for the 3rd member.

    Third member sold separately.

     

  • OTB Gear 6870 Finned Cover For Round Back 9 Inch Rearend, Polished
    OTB Gear 6870 Finned Cover For Round Back 9 Inch Rearend, Polished
    SKU-91068700
    x
                The perfect cure for the boring pumpkin. The sturdy and popular Ford 9"  rearend needs a little work to look stylish... at least thats what we  thought. This new cover is cast in A356 aircraft grade alloy and  available in a highly polished finish. No hardware is  needed to attach - we provide a generous supply of high temperature  adhesive (600 degree).
    • Excellent compliment to the new & improved Speedway 9" housing (910-46100)
    • Will fit most factory 9" Ford rear axle housings that have a bulge on the back of the housing for the ring gear, such as our axle # 910-46100 and other similar rear housings
    • No hardware is needed to attach
    • Generous supply of high temperature adhesive (600 degree) included
    • Can be powder coated after assembly
    • Will not fit Currie except, CE2000N made prior to September 2009
    • Will not fit axle housing used in Speedway #s 910-45100 and 715-700
    • Catalog correction, # 338 p# 61 shows the incorrect style of housing that this cover fits

    Instructions (PDF)

     

  • 9 Inch Ford Viton Pinion Seal
    9 Inch Ford Viton Pinion Seal
    SKU-912S18833V
    x
                

    These Viton 9" Ford rear axle pinion seals are good to over 400° F. Stock rubber seal starts to deteriorate at about 250° F.

  • GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline
    GM 10 Bolt Ring and Pinion Instal Kit, 8.5 R&P, 30 Spline
    SKU-919831021
    x
                Everything you need for a complete ring and pinion installation job. 

    Kit Includes:

    • cover gasket
    • crush sleeve
    • marking compound and brush
    • pinion and carrier bearings
    • pinion nut and washer
    • pinion seal
    • thread locking compound
    • sealer

    Note: Pinion-depth shims are not included. 

  • Winters Performance POSTER-10 10-Spline Quick Change Gear Chart
    Winters Performance POSTER-10 10-Spline Quick Change Gear Chart
    SKU-8021000
    x
                Perfect for trailers or the race shop!  19" x 25"  Laminated.
            
  • 9 Inch Ford Ring & Pinion, 4.56 Gear Ratio
    $159.99
    $169.99
    Product Rating: 4.00 Stars
    9 Inch Ford Ring & Pinion, 4.56 Gear Ratio
    SKU-91919457
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
    SKU-91919633
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 5.14 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 5.14 Gear Ratio
    SKU-91919514
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 4.86 Gear Ratio
    SKU-91919486
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • Housing Studs, 9 Inch Carrier
    Housing Studs, 9 Inch Carrier
    SKU-9190915
    x
                Housing studs and ring gear bolts complete the package for your racing or street use 9" Ford axle. 

    Side bell thru bolts torque to 40-45 lbs.

  • 9 Inch Ford Ring & Pinion, 3.50 Gear Ratio
    9 Inch Ford Ring & Pinion, 3.50 Gear Ratio
    SKU-91919350
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • New Ford 9 Inch Aluminum Carrier Housing w/3.062 Inch Caps
    New Ford 9 Inch Aluminum Carrier Housing w/3.062 Inch Caps
    SKU-91048393
    x
                

    This brand new carrier housing is built to take street/strip abuse without the fear of breaking. Our aluminum housing has forged caps and extra beef where it's needed. Most stock differentials use the 3.062" o.d. bearings # TLM603049 w/ 1.781" i/d.

    The aluminum case will save you 20 lbs. over the cast iron version. You should also add a new heavy duty aluminum pinion support while you're at it. 

    Carrier caps torque to 95 ft lbs.

  • 1928-48 Ford Quick Change Look Rear End Cover, Polished
    1928-48 Ford Quick Change Look Rear End Cover, Polished
    SKU-91647902
    x
                

    The great look of a quick change rearend at a fraction of the price! Contoured to fit an early Ford "banjo" axle housing.

    916-47902 Instructions (PDF)

  • 9 Inch Ford Teflon Low-Drag Pinion Seal
    9 Inch Ford Teflon Low-Drag Pinion Seal
    SKU-912S18833T
    x
                

    These Teflon 9" Ford rear axle pinion seals are good to over 400° F. Stock rubber seal starts to deteriorate at about 250° F.

  • Ford 9 Inch Shim Kit
    $29.99
    Ford 9 Inch Shim Kit
    SKU-54584751
    x
                Kit Contains: nine pinion retainer shims consisting of one each .005", .006", .0075", .0082", two .004", and three .0105"; twelve pinion pre-load shims consisting of one each .005", .006", .0075", .0082", .009", .020", .030", two .050", and three .010"; one pinion spacer .375" thick; and one 3/4"-20 Ford pinion nut.
            
  • 9 Inch Ford Housing Cover
    $14.99
    9 Inch Ford Housing Cover
    SKU-91081007
    x
                Aluminum cover to keep 9" housing clean when you have your third member out.
            
  • 1935-48 Ford/Mercury High Torque Ring and Pinion Gear Set, 6.17 Gear
    1935-48 Ford/Mercury High Torque Ring and Pinion Gear Set, 6.17 Gear
    SKU-919107J
    x
                These fit 1935-1948 passenger cars or 1935-1941 Ford 1/2 ton pick-ups (no 3/4 ton or larger). All gear sets are direct replacements for stock, non-quickchange rear axles. 6-spline input. 

    Installation Instructions  (PDF)

  • Pinion Nut for 9 Inch Ford
    $4.99
    Product Rating: 5.00 Stars
    Pinion Nut for 9 Inch Ford
    SKU-9196887
    x
                

    Thread pitch on this pinion nut is 3/4"-20. Fits 8" and 9" Ford rear axles.

    Note: Install adding red loctite to the threads.

  • New Ford 9 Inch Aluminum Carrier Housing w/3.25 Inch Caps
    New Ford 9 Inch Aluminum Carrier Housing w/3.25 Inch Caps
    SKU-91048394
    x
                

    This brand new carrier housing is built to take street/strip abuse without the fear of breaking. Our aluminum housing has forged caps and extra beef where it's needed. Most stock differentials use the 3.062" o.d. bearings # TLM603049 w/ 1.781" i/d.

    The aluminum case will save you 20 lbs. over the cast iron version. You should also add a new heavy duty aluminum pinion support while you're at it. 

    Carrier caps torque to 95 ft lbs.

  • 9 Inch Ford Ring & Pinion, 4.11 Gear Ratio
    9 Inch Ford Ring & Pinion, 4.11 Gear Ratio
    SKU-91919411
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • 9 Inch Ford Ring & Pinion, 6.20 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 6.20 Gear Ratio
    SKU-91919620
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • Currie 9+-94088 31 Spline Axle 9-Plus Torque Sensitive Differential
    Currie 9+-94088 31 Spline Axle 9-Plus Torque Sensitive Differential
    SKU-91094088
    x
                

    The Currie 9-Plus differential is essentially a reproduction of the original four spider limited slip that Ford used in their 9" rearends. Uses 1.780" i.d. carrier bearings. Use with new bolts and lube additive listed below

    • For light to medium weight street rod applications .
    • Not recommended for drag racing

    Currie Tech Bulletin (PDF)

  • ARP 250-3003 Ford 8.8 and 9 Inch Rear End Ring Gear Bolt Kit, 12pt
    ARP 250-3003 Ford 8.8 and 9 Inch Rear End Ring Gear Bolt Kit, 12pt
    SKU-1012503003
    x
                These ring gear bolt kits come complete with 10 black oxide 3/4" 12-point bolts.  They are designed for use with 8.8" and 9" Ford rear ends.
    • 8.8 and 9" Ford ring gear bolts
    • 3/4" head
    • 7/16-20 thread
    • .750 under head length
  • 78-Up GM 10-Bolt w/7.5 Inch Ring Gear Rear End Differential Axle Cover
    78-Up GM 10-Bolt w/7.5 Inch Ring Gear Rear End Differential Axle Cover
    SKU-5503776
    x
                

    Add some visual attitude to your rear axle with these chrome differential covers. They're stamped from heavy-gauge steel to ward off those pesky oil leaks, and chrome plated for long lasting good looks.

    GM 10-Bolt 7.5 Inch Rearend Differential Cover

    • Approximately 10-3/4" side to side
    • Approximately 10" up and down
    • It has a squared off oval shape
    • Mounts with 10 bolts

    Fits:

    • Many 1978-Up GM midsize cars
    • 1982-Up Camaro/Firebird
    • S-10/S-15 pickups

     

  • Ring Gear Bolts for 9 Inch Ford, 10 PK
    Ring Gear Bolts for 9 Inch Ford, 10 PK
    SKU-5502094
    x
                Ring gear bolts for 9" Ford. Pack of ten.
            
  • 9 Inch Ford Solid Pinion Bearing Spacer Kit with Shims
    9 Inch Ford Solid Pinion Bearing Spacer Kit with Shims
    SKU-9190920
    x
                

    Ford 9" solid pinion bearing spacer kit. Designed to retain your pinion depth settings for greater strength and reliability. Spacers can be reused if disassembly of the carrier is required. Shims included.

  • Motive Gear Ford 9 Inch Performance Ring and Pinion, 1957 - Up Style
    Motive Gear Ford 9 Inch Performance Ring and Pinion, 1957 - Up Style
    SKU-919194
    x
                

    Motive Gear 9" Performance Style 1957 & Up ring and pinion gear sets are quality assured and tested to take a beating in your aluminum or steel housing.  Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into this series of performance gear sets. 

    • 10 Bolt 3rd member
    • Aluminum or steel housing
    • Ring gear diameter 9"
    • 10-7/16" x 20 RH threaded bolts
    • Pinion diameter 1.313" 28 splines
    • No case breaks
    • 8620 Material - Heat Treated
    • Choose your ratio

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Motive Gear Performance Ring and Pinion Chart (GIF)   

  • 7 1/2 Inch GM Ring Gear Spacer with Bolts
    7 1/2 Inch GM Ring Gear Spacer with Bolts
    SKU-91048305
    x
                

    Allows you to install a bigger series gear set onto a smaller series carrier. Precision ground to ensure trueness and provide proper backlash. Fits 7.50" diameter ring gear with 1.438" diameter pinion (27 spline). Longer, LH thread ring gear bolts are included with this spacer.

  • 9 Inch Ford Ring & Pinion, 5.83 Gear Ratio
    $159.99
    $169.99
    9 Inch Ford Ring & Pinion, 5.83 Gear Ratio
    SKU-91919583
    x
                This product offers exceptional strength and service life at a great price! We offer a huge selection of ratios for your 9" Ford axle. 

    Other ratios from 4.78 thru 7.33 available in our Lightened Gear series. (Part numbers 91919-478, 91919-525, 91919-614, 91919-666, 91919-683, 91919-700, 91919-716, 91919-733).

    Note:  Circle track racing applications require a minimum of 4 qts. of rear end lube.  Using less than this amount will lead to immediate pinion bearing failure.

    Instructions (PDF)

  • Dana 44 Rear End Cover
    $24.99
    Dana 44 Rear End Cover
    SKU-5503788
    x
                Chrome rear end cover for Dana 44.
            
  • Finned Pol Alum Rearend Differential Cover, GM 8.875 Inch 12 Bolt
    Finned Pol Alum Rearend Differential Cover, GM 8.875 Inch 12 Bolt
    SKU-9115082
    x
                

    These polished aluminum rearend gear covers feature a classic finned design and are made to fit GM 12 bolt housings with an 8-7/8" ring gear.

    • Polished aluminum GM 8-7/8" ring gear differential cover with 12 bolt pattern
    • Includes bolts, gasket, and drain plug
  • GM 10-Bolt with 7.5 Inch Ring Gear Rear End Differential Axle Cover
    GM 10-Bolt with 7.5 Inch Ring Gear Rear End Differential Axle Cover
    SKU-5503782
    x
                

    Add some visual attitude to your rear axle with these chrome differential covers. They're stamped from heavy-gauge steel to ward off those pesky oil leaks, and chrome plated for long lasting good looks.

    GM 10-Bolt 7.5 Inch Rearend Differential Cover

    Fits:

    • Most GM intermediates 1965-1983
    • Camaros 1973-1977
    • Axle types M & P

     

     

  • GM 10-Bolt with 8.5 Inch Ring Gear Rear End Differential Axle Cover
    GM 10-Bolt with 8.5 Inch Ring Gear Rear End Differential Axle Cover
    SKU-5503789
    x
                

    Add some visual attitude to your rear axle with these chrome differential covers. They're stamped from heavy-gauge steel to ward off those pesky oil leaks, and chrome plated for long lasting good looks.

    GM 10-Bolt 8.5 Inch Rearend Differential Cover

    Fits:

    • Full size and intermediate Chevy and GM cars 1971-1994
    • Axle types B, C, G, K and O.

     

  • Currie 9+-94086 28 Spline Axle 9-Plus Torque Sensitive Differential
    Currie 9+-94086 28 Spline Axle 9-Plus Torque Sensitive Differential
    SKU-91094086
    x
                

    The Currie 9-Plus differential is essentially a reproduction of the original four spider limited slip that Ford used in their 9" rearends. Uses 1.780" i.d. carrier bearings. Use with new bolts and lube additive listed below

    • For light to medium weight street rod applications .
    • Not recommended for drag racing

    Currie Tech Bulletin (PDF)

  • SuperSeal 9 Inch Ford Pumpkin Gasket
    SuperSeal 9 Inch Ford Pumpkin Gasket
    SKU-9192300
    x
                Our reuseable rear differential gaskets have a steel core and non-stick coating. Fits 9" Ford rear axle third member housings.
            
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