Customer Appreciation Week 2026

Flathead 9 Inch Clutch Disc, 1 Inch 14-Spline, S-10 T-5 Transmission

Customer Appreciation Week 2026

Flathead 9 Inch Clutch Disc, 1 Inch 14-Spline, S-10 T-5 Transmission
Speedway Motors

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#91015643

Flathead 9 Inch Clutch Disc, 1 Inch 14-Spline, S-10 T-5 Transmission

  • Not for use with 11" Ford truck pressure plate
  • Clearancing of adapter may be required with pressure plates larger than 9"
  • Speedway pressure plate 91015635 is without weights and provides extra clearance
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Diameter:

9 Inch

10 Inch10-1/2 Inch

$94.99

/each

In Stock

$105.99

Save $11.00


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Product Summary

T5, 14 Input Shaft Spline Count, 9" Diameter

  • Not for use with 11" Ford truck pressure plate
  • Clearancing of adapter may be required with pressure plates larger than 9"
  • Speedway pressure plate 91015635 is without weights and provides extra clearance
  • T-5 transmissions may require drilling mount ears to 1/2"
See more details

Key Specs

MFG. Part #91015643
Input Shaft Spline Count14
Friction MaterialOrganic
Input Shaft Diameter1"
Diameter9"
See more specs

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Speedway Motors 91015643 Details

It's getting harder to find flathead Ford clutch components. We can help you resolve this problem with our 9" clutch discs for the flathead V8.

These premium organic clutch friction discs are for use with flathead Ford V8 to S-10 T5 transmission conversions.

These T5 clutch discs work with our new Flathead flywheels (p/n 91015627/91015629), and with original flywheels when doing T5 conversions.

Flathead 9 Inch Clutch Disc

  • 1 Inch 14-Spline 
  • Early Ford Flatheads
  • S-10 T5 transmission conversions

Warning: Not for use with 11" Ford Truck pressure plate.  Clearance of adapter may be required with pressure plates larger than 9".  Speedway pressure plate 91015635 is without weights and provides extra clearance.  T-5 transmissions may require drilling mount ears to 1/2". 

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Speedway Motors 91015643 Specifications

KEY SPECS
MFG. Part #91015643
BrandSpeedway Motors
Input Shaft Spline Count14
Friction MaterialOrganic
Input Shaft Diameter1"
Diameter9"
Hub StyleSprung
GENERAL
Sold in QuantityEach

Ratings & Reviews

4.8

9 Reviews

Overall Assessment

Customers praise the product for its fit, quality, and practicality in transmission swaps, notably in a T5 manual to a Ford flathead. The clutch disc is admired for its perfect fitting in the conversion process and its usability with a flathead pressure plate. While there were concerns about the price, the product's exceptional compatibility and functionality across different models set it apart. Overrule, customers recommend it over other options because of its proven performance.

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4.8

9 reviews

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I will buy this again if need be

5.0

2 years ago

John

Kelowna, BC

If utilizing original flathead flywheel this and the 9" pressure plate are a perfect fit

Would Recommend

Easy, fast ordering and part exactly as advertised.

5.0

3 years ago

RPU

Culver City, CA

Verified

Doing a transmission swap, able to compare to other products and purchase the best option.

Would Recommend

worked great

5.0

4 years ago

Vern

S, Michigan

Verified

fit , quality , price very good

Would Recommend

Would buy this again, but hopefully not for a long time.

5.0

4 years ago

JWW

Bring Columbia

Verified

51 ford coupe open drive conversion.

Would Recommend

i would buy again

5.0

8 years ago

dave

sw arkansas

Verified

used this with flathead pressure plate to adapt a t5 trans worked good

Would Recommend

Excellent part I would buy it again

5.0

9 years ago

Buba

Wa

Verified

Work great for mating up a T5 manual to a flathead Ford

Would Recommend

great shipping deal, disc is over priced,

3.0

9 years ago

Screener

Ma.

Verified

shipping is a great deal. Clutch Disc is over priced and has stock gm dimensions. Can be bought for half the price thru online parts stores .

Great fit

5.0

10 years ago

James

Amarillo tx

Verified

Great fit. Love speedway.

Would Recommend

Perfect for the conversion

5.0

11 years ago

1949shoebox

Undisclosed

Verified

The clutch disc worked perfect installing the chevy t-5 transmission into the 1949 shoebox. now to adjust and finish installation of the new floorboards and all will be well.

Would Recommend

Showing 9 of 9 reviews

Questions & Answers

3 Questions • 4 Answers

will this clutch disc work in a 1932 chevy w t5 conversion 89 s10 t5 transmission 194 chevy eng

by fueler

• 9 years ago

1 answer

View Answer

Can this clutch plate be used with an aluminium flywheel Is this clutch plate non metalic and 100% organic for use with a aluminium flywheel

by bigals

• 12 years ago

1 answer

View Answer

Will this clutch disc work with a Ford Flathead V8-60 engine with flat flywheel and a Chevy S-10 5-speed manual transmission? Is the front face of the clutch disc essentially flat so that it will clear the flywheel to crankshaft mounting bolt heads with n

by

• 14 years ago

2 answers

View Answers

3 of 3 questions shown

Fitment

  • 221 Ford Flathead V8

  • Ford Flathead V8 17 Stud 221 18

  • Ford Flathead V8 21 Stud 221 40

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

Customer Impersonation Script