Brake Kit 1969-77 GM Caliper to Early Ford Spindle, Ford B-P

#91031940

Brake Kit 1969-77 GM Caliper to Early Ford Spindle, Ford B-P

Name: Brake Kit 1969-77 GM Caliper to Early Ford Spindle, Ford B-P
Brand: Speedway Motors
SKU: 91031940
Price: 374.99 USD
Availability: InStock
Rating: 4.5 (22 reviews)

22 Reviews

9 Questions

Easily installs 11" rotors and '69-'77 mid-size GM single piston calipers to your '37-'48 Ford passenger car spindles or '37-'47 Ford pickup spindles
Designed to work on 1937-48 Ford spindles that have the cast on steering arms. It will not function correctly when used on a spindle that uses bolt on steering arms and would require alteration

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Product Summary

Front Position, 11 Inch Rotor Diameter, Natural

Easily installs 11" rotors and '69-'77 mid-size GM single piston calipers to your '37-'48 Ford passenger car spindles or '37-'47 Ford pickup spindles
Designed to work on 1937-48 Ford spindles that have the cast on steering arms. It will not function correctly when used on a spindle that uses bolt on steering arms and would require alteration
11" vented rotors offer improved heat dissipation and greater rotational mass for better braking performance, 5 on 4-1/2" bolt pattern and 1/2"-20 studs
Standard GM midsize calipers feature a large 2-3/4" bore and increased brake pad surface to help prevent brake fade
Uses an inner bearing and seal adapter to increase the O.D. for the larger bearings and seals used in the kit, no machine work required

Comes as a Kit

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Key Specs

MFG. Part #	91031940
Position	Front
Wheel Bolt Pattern (in.)	5x4.5 in.
Wheel Bolt Pattern (mm)	5x114.3 mm
Rotor Diameter	11 Inch

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Installation Details

Disc Brake Kits Installation Instructions (91031940)

Everything You Need to Know About Converting Drum Brakes to Disc

Brake Pad Identification and Friction Surface Options Explained

Brake Caliper Brackets Installation Instructions (91631921)

Installation Tips

Designed to work on 1937-48 Ford spindles that have the cast on steering arms. It will not function correctly when used on a spindle that uses bolt on steering arms and would require alteration.
Has the common Ford-Mopar 5 on 4 ½” bolt pattern and is also avaialble with the Chevy 5 on 4 ¾” bolt pattern under kit number 910-31941
Uses an inner bearing and seal adapter to increase the O.D. for the larger bearings and seals used in the kit.

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Speedway Motors 91031940 Details

Easily installs 11" Ford/Mopar rotors and 1969-1977 midsize GM single piston calipers to your 1937-1948 Ford passenger car spindles. No machine work needed. Great for street rods based on 1932-1948 Fords, however, these kits are much too large and heavy for a T-bucket or an early roadster.

Not for use with bolt-on steering arms.

Note: Some applications may require you to purchase item (617-8562) with this kit.

Item Details

'11" Ford/Mopar rotor and ''69-''77 GM caliper to early Ford spindles'

Charts

910-31940 Instructions (PDF)

Guides & Documents

Disc Brake Kits Installation Instructions (91031940)

Everything You Need to Know About Converting Drum Brakes to Disc

Disc Brake Pads Technical Information (9193382)

Brake Pad Identification and Friction Surface Options Explained

Brake Caliper Brackets Installation Instructions (91631921)

Speedway Motors 91031940 Specifications

KEY SPECS
MFG. Part #	91031940
Brand	Speedway Motors
Position	Front
Wheel Bolt Pattern (in.)	5x4.5 in.
Wheel Bolt Pattern (mm)	5x114.3 mm
Rotor Diameter	11 Inch
Rotor Type	Vented
Caliper Pistons	One
Caliper Finish	Natural
Parking Brake Provision	No
Minimum Recommended Wheel Diameter	15 Inch
Rotor Shape	Round
Hardware Included	Yes
Rotor Style	Plain Face
Front Rotor Included	Yes
Front Rotor Diameter	11 Inch
Front Caliper Included	Yes
Rear Caliper Included	No
Front Spindles Included	No
Master Cylinder Included	No
Brake Booster Included	No
Brake Hoses Included	No
Rear Rotor Included	No
Bolt Pattern	5 on 4.5"
Finish	Natural
Color	Natural
Front Caliper Finish	Natural
Front Caliper Piston Quantity	1
Application Type	37-48 Ford Car Spindle

GENERAL
Sold in Quantity	Kit
Notes	Includes rotors, bearings and seals, calipers, pads, brake hoses, brake tabs, and caliper brackets.
Rotor Thickness	1"
Rotor I.D.	6.995"
Stud Diameter	0.5"
Stud Length	1"
Thread Pitch	1/2"-20
Centerline of Holes	7"
Front Suspension Type	Straight Axle
Rotor Material Type	Cast Iron

Ratings & Reviews

4.5

22 Reviews

Overall Assessment

Customers highly appreciate this product for its easy installation process, practicality, and noticeable improvement in stopping performance. Emphasizing its adaptability, users highlight the perfect fit and compatibility with existing spindles. While minor adjustments may be necessary for some users, the general consensus is that the product works as designed. Its quality and affordability earn significant praise, making it a recommended choice for a drum to disc conversion. Noteworthy is the lure of the 'completeness' of the kit despite a few concerns about missing or ill-fitting elements. However, most users suggest that the added work did not detract much from their overall satisfaction with the product's performance.

Write A Review

4.6

22 reviews

Most Liked Positive Review

5.0

Great complete kit.. everything but grease and fluid.

I had to countersink two of the holes in the plates for adequate protuding thread length for my steering arm to mount back on, and use shorter spacers on the driver's side plate. And the spindle nuts thread pitch was a little tight on the spindle. Kind of self locking. And the pound on covers were loose in the bores. I just swedged them a little to get a good fit, they're soft. But everything I get is a kit that usually has to be field for anyway ,I was impressed by the completeness and low price for such a comprehensive kit. I would recommend it to anyone with an early ford front axle... Thank you..

Most Liked Negative Review

2.0

Many parts do not fit standard Ford spin

Lots of problems for an easy install kit! I am putting this on a stock 46 Mercury. Badly written directions The kit comes with extra parts for other apps but the directions don't tell you this. Next, once the new hub is assembled and installed, the spindle nut won't tighten enough to get a cotter key in. Need to grind down the nut about an 1/8 of an inch (weaking it) Now I am trying to attach the brake hose to the orginal ford brake line; doesn't fit...the directions say "install new brake lines" whoa, no mention of needing new brake lines except when i re-read the parts list!! at the bottom they say to order 617-8562... why not include in kit if needed? I would recommed this kit to an enemy!

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Sort Reviews

Disc brake conversion `39 ford.

5.0

2 years ago

Sonoma County Ca.

Verified

Easy to install, the wheel bearing adapters will widen the wheels approx. 3/4 inch each side. The parts are heavy duty.

Would Recommend

Excellent quality

5.0

2 years ago

JimBob

Sutherlin, OR

Verified

Had to grind a little on the Disc Brake mounts. But otherwise fit nicely.

Would Recommend

Yes I would buy again, and have used before

5.0

2 years ago

Hot Rod Lane

Michigan

Verified

I had great help from Speedway Tech (Clark) who helped me with all my parts .everything worked as he suggested. I am building a 28 Ford sedan with a early Hemi and 400 GM trans. I am currently building the chassis, have used Speedway parts for years. They have always taken care of any issues. This car will be a vintage drag car!

Would Recommend

Good upgrade

5.0

3 years ago

Ryan

Verified

Easy installation works as advertised! Disc set up may not look as good as the original but it sure stops better

Would Recommend

I would buy this again. Perfect fit.

5.0

4 years ago

Andy

Edinburg TX

Verified

I have been wanting an easy way to convert drum to disc. This was the best choice ever.

Would Recommend

Yes

5.0

4 years ago

Flat Lee

Plymouth CA

Verified

I have purchased many parts from Speedway and have never been unsatisfied

Would Recommend

Service was good but product was very bad quality.

3.0

4 years ago

Don

Oklahoma

Verified

See above comments

Would Not Recommend

Have used this product several time great

5.0

5 years ago

Cutitup

Poquoson Va.

Verified

Works as designed great

Great kit at a great value

4.0

5 years ago

Rich

NRH

Verified

To work with my later spindles, I had to grind a couple small areas to get the caliper bracket to sent flush. Not a big deal. Not sure why the instructions were sent separately but they showed up over a week later finally.

Would Recommend

THIS KIT WAS GREAT

5.0

5 years ago

USAVE

TROY MI

Verified

I INSTALLED IT IN ABOUT 2 HOURS GREAT KIT

Would Recommend

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Showing 10 of 22 reviews

Questions & Answers

9 Questions • 10 Answers

Sort Questions

will the brackets fit on a spindle with a 3 1/8 inch pattern. thanks

by lynn

• 8 years ago

2 answers

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I have your early Ford Spindles part number #91032104. Will this kit work with those spindles? Also planning to use the wide 5 adapters #91658250. If the above is good to go any problem with these adapters with the disk brake kit?

by Scott

• 9 years ago

1 answer

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You say these are too heavy for an early rod. I am building a 33 Ford truck, I Beam axle, 39 spindles with cast arms. Engine is 51 V8 Flathead. Is this a practical kit or would you use something else?

by Gord

• 9 years ago

1 answer

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I am wanting to install this kit on a '40 Ford that has a dropped stock axle & stock spindles with dropped steering arms, will it fit? Also I read in a review dated Dec. 14, 2012 that the stock spindle nut does not fit correctly, how has this problem been resolved? Are the calipers and disc new or rebuilt? Thanks, JT

by JT

• 9 years ago

1 answer

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will I need to install a power brake booster when I change to front disc 37 to 48 Ford front axle

by JWC219

• 12 years ago

1 answer

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bearing and seals for this kit Hello, It is time to repack the bearings and I would like to know the year, make and model of the car the rotors are from so that I can purchase new grease seals and maybe bearings. thank you, Glenn

by akbo47

• 12 years ago

1 answer

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Will this fit the front of a 67 ford econoline van? Please let me know if you have a disc brake kit that will fit 1967 Ford Econoline E100 Van. Thank you.

by Alienxfiles

• 13 years ago

1 answer

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does this kit change the wheel track from stock ford brakes?

• 15 years ago

1 answer

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I'm planning on installing this kit on my all original 1940 Ford Deluxe convertible. For now, the rear brakes will be left as original. I have a few questions: 1. will the stock and original 16" steel wheels still work? 2. do I need to install a proportio

• 15 years ago

1 answer

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9 of 9 questions shown

Fitment

1939-1948 Ford Deluxe

1941 Ford Model 11 A

1942 Ford Model 2 GA Special

1942 Ford Model 21 A Deluxe

1937 Ford Model 74

1937 Ford Model 78

1938 Ford Model 81 A

1938 Ford Model 82 A

1937-1947 Ford Sedan Delivery

1939-1940 Ford Standard

1941-1948 Ford Super Deluxe