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9 Inch Ford Ring & Pinion, 6.33 Gear Ratio

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Specs
Sold in Quantity:
Set
Ratio:
6.33
Garage Sale:
No
9 Inch Ford Ring & Pinion, 6.33 Gear Ratio
9 Inch Ford Ring & Pinion, 6.33 Gear Ratio

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What's in the Box

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)

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                        Mount this assembly stand to your work bench (or engine stand) and stop wrestling with the third member every time you need to replace a gear set or spool. Saves you time and energy!  Rotates 360° for total access to your assembly.
                    
9 Inch Ford Small Yoke
SKU-80292417
                        We found a limited supply of new small yokes for the 9" Ford.  They accept the 1310 series U-joints (1-1/16" caps x 3-7/32").  Fits standard 28 spline pinion gear.
                    
Ford 9 Inch Steel Full Spool
SKU-8025034
                        

Lightweight and standard steel Ford 9" full spools are available with 28 or 31 splines. Standard steel spool weighs 8.7 lbs. (28 Spline) & 8.0 lbs. (31 Spline).  The lightweight steel spool weighs 6.2 lbs. (28 Spline) & 6.1 lbs. (31 Spline)

NOTE: All Ford 9" full spools use overhaul kit #919-0950-31, even if they are a 28 spline spool.  The 919-0950-31 contains the large I.D. standard O.D. carrier bearings and pinion bearings.

If you are using the H.D. nodular iron center section which use the large diameter carrier bearings, order kit # 919-0950-31s, which also includes the large pinion bearings for use with the Daytona pinion support.
9 Inch Ford Rear End Overhaul Kit
SKU-9190950
                        This 9" Ford overhaul kit includes: pinion pilot, pinion shaft, pinion nut, pinion seal, gasket, shims, crush collar, sealant, gear marking grease, brush and Loctite. Ring gear bolts not included. 

NOTE: All Ford 9" full spools use overhaul kit 9190950-31, even if they are a 28-spline spool. The 9190950-31 contains the large I.D. standard O.D. carrier bearings and pinion bearings needed for use with our full spools.

If you are using the H.D. nodular iron center section which uses the large diameter carrier bearings, order kit 9190950-31s, which also includes the large pinion bearings for use with the Daytona pinion support.

9" Ford Carrier Bearing Chart (GIF)  - Double check your bearing p/n.

Ford 9 Inch Megalite Steel Full Spool, 31-Spline
SKU-91048610
                        These Ford 9" megalite steel full spools weigh just 5.49 lbs.

Comparison spool weights:

  • Aluminum - 5.0 lbs.
  • Lite Steel - 6.1 lbs.
  • Standard Steel - 8.0 lbs.
  • Stock carrier with mini spool - 13.7 lbs.

Note: All Ford 9" full spools use overhaul kit 9190950-31. The 9190950-31 contains the large I.D. standard O.D. carrier bearings and pinion bearings needed for use with our full spools.

If you are using the H.D. nodular iron center section which uses the large diameter carrier bearings, order kit 9190950-31s, which also includes the large pinion bearings for use with the Daytona pinion support.

Ford 9 Inch Megalite Steel Full Spool, 28-Spline
SKU-91048611
                        These Ford 9" megalite steel full spools weigh just 5.55 lbs.

Comparison spool weights:

  • Aluminum - 5.0 lbs.
  • Lite Steel - 6.0 lbs.
  • Standard Steel - 8.9 lbs.
  • Stock carrier with mini spool - 13.7 lbs.

Note: All Ford 9" full spools use overhaul kit 9190950-31, even if they are a 28-spline spool. The 9190950-31 contains the large I.D. standard O.D. carrier bearings and pinion bearings needed for use with our full spools.

If you are using the H.D. nodular iron center section which uses the large diameter carrier bearings, order kit 9190950-31s, which also includes the large pinion bearings for use with the Daytona pinion support.

Garage Sale - Speedway Ultra-Lite Ford 9 Inch Ring Gear, 6.33 Ratio
SKU-91919633.L
                        

Clearance!!

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  

  • Ultra lightweight ring gear and pinion
  • Speedway's in house lightening process can remove up to 2.6 lbs of rotating weight from your drive train
Motive Gear Ford 9 Inch Performance Ring and Pinion, 1957 - Up Style
SKU-919194
                        

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)   

Motive Gear AX Series Ford 9 Inch Lightweight Ring and Pinion Gears
SKU-91989
                        

Perfect for lightweight racing applications, these ring and pinion performance gear sets are designed to fit Ford 9" style rear end housings.  Motive Gear recommends the use of a daytona pinion support and solid pinion spacer in all racing applications.

  • Lightweight ring gear
  • Less rotating mass
  • Faster acceleration
  • Ring diameter: 9"
  • 10-7/16" x 20 right hand threaded bolts
  • Pinion diameter: 1.313" 28 splines
  • 8620 heat treated material 

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.

For use in: 

  • NASCAR®
  • NEXTEL CUP®
  • BUSCH GRAND NATIONAL®
  • CRAFTSMAN TRUCK®
  • ARCA®
  • IMCA®
  • UMP®
  • IHRA®
  • NHRA®

Available in ratios:

Manufacturer P/N         #of Teeth          Ratio

F890422AX                 38-9                 4.22

F890430AX                 43-10               4.30

F890457AX                 32-7                 4.57

F890471AX                 33-7                 4.71

F890478AX                 43-9                 4.78

F890486AX                 34-7                 4.86

F890500AX                 35-7                 5.00

F890514AX                 36-7                 5.14

F890525AX                 42-8                 5.25

F890529AX                 37-7                 5.29

F890537AX                 43-8                 5.37

F890543AX                 38-7                 5.43

F890550AX                 44-8                 5.50

F890557AX                 39-7                 5.57

F890567AX                 34-4                 5.67

F890583AX                 35-6                 5.83

F890600AX                 36-6                 6.00

F890614AX                 43-7                 6.14

F890620AX                 31-5                 6.20

F890633AX                 38-6                 6.33

F890650AX                 39-6                 6.50

F890666AX                 40-6                 6.66

F890683AX                 41-6                 6.83

F890700AX                 42-6                 7.00

F890716AX                 43-6                 7.16

F890733AX                 44-6                 7.33 

Pinion Nut for 9 Inch Ford
SKU-9196887
                        

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.

Ring Gear Bolts for 9 Inch Ford, 10 PK
SKU-5502094
                        Ring gear bolts for 9" Ford. Pack of ten.