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Speedway Deluxe 1964-74 GM Car Front Disc Brake Kit

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Specs
Centerline of Holes:
7.00
Material Type:
Cast Iron
Sold in Quantity:
Kit
Finish:
Natural
Stud Length:
.80
Stud Diameter:
.44
Thread Pitch:
7/16"-20
Hardware Included:
Yes
Rotor Diameter:
11.00
Caliper Pistons:
Single
Rotor Thickness:
1.05
Minimum Recommended Wheel Diameter:
15 Inch
Caliper Finish:
Natural
Rotor Construction:
Vented
Garage Sale:
No
Rotor Location:
Front
Rotor Shape:
Round
Drilled:
No
Slotted:
No
Notes
Includes rotors, backing plates, bearings and seals, calipers, pads, brake hoses, brake tabs, and caliper brackets.
Speedway Deluxe 1964-74 GM Car Front Disc Brake Kit
Speedway Deluxe 1964-74 GM Car Front Disc Brake Kit
Product Video
Speedway Deluxe 1964-74 GM Car Front Disc Brake Kit

Click image to enlarge

Watch the video below to learn how to correctly measure your wheel bolt pattern.

Please NOTE the following about this product:

  • This item is sold as a kit.

Details

Reviews

Q & A

What's in the Box

Front disc brakes provide a significant improvement in braking performance versus the drum brakes your car came with. This complete front disc brake conversion kit fits 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body using your stock disc brake spindles or our new replacement stock height disc brake spindles # 910-34900.

Kit includes 11" diameter vented brake rotor with 5 on 4-3/4" wheel bolt pattern, '69-'77 GM style calipers (7/16"-20 inlets), caliper brackets, brake pads, backing plates, rubber brake lines, and all necessary bearings, seals and hardware for an easy, complete installation onto factory disc brake spindles.

Note:  Brake kit will not fit our 2" dropped spindles # 910-34906 or stock drum brake spindles. Must be used with stock style disc brake spindles and 15" diameter or larger wheels.

910-31958 Instructions (PDF)

Application

Brake kit fits:

  • 1964-72 Chevelle, Malibu, El Camino
  • 1967-69 Camaro, Firebird
  • 1968-74 Nova, Ventura, Omega, Apollo
If you are going to use this kit on an A-Body Oldsmobile (Cutlass, 442), Pontiac (GTO, Lemans) or Buick (Skylark, GS), it will not directly bolt on to the original spindles even with grinding the .610" off the stud at the top. The lower bolt holes in the original spindles are 7/16" and the bracket and bolts 1/2". The upper bolt holes on the original spindles are 1/2" with the brackets and bolts being 5/8". You will need to replace or modify the spindles.

Notes

  1. Kit will not work with 14" wheels. Must be 15" wheels or larger.
  2. Kit must be used with original GM disc brake spindles our our new spindles # 910-34900. The difference between disc brake and drum brake spindles is at boss at the top where the barcket would mount. On drum brake spindles, this boss stuck out farther than disc brake spindles. Approximately .610" would have to be removed from this boss to work with these spindles.
  3. We recommend using brake booster/master cylinder combo 910-31978 with this front disc brake kit. Stock single reservoir 4-wheel drum brake master cylinders do not have the capacity to supply the proper amount of pressure for front disc brakes. Combo 910-31978 also includes an adjustable proportioning valve which is to be installed in the rear brake line circuit. The proportioning valve modulates pressure to the rear brakes which is necessary to prevent the rear brakes from locking up in an emergency stop situatiuon.

Customer Reviews

Rated 4.8 out of 5 by 10 reviewers.
RATING BREAKDOWN
10 reviews
5 Stars
8
4 Stars
2
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

jimbob1
Roseburg, OR, USA
Product Rating

Outstanding Quality

September 29, 2013
This kit fit my Skylark chassis perfect. Great quality and again an unbeatable price. I installed this kit over two years ago and it performs very well. Never a problem. I would definetly recommend this kit as a changover.
Pros:
  • Great Fit
Yes, I recommend this product.
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gearhead195five
Baraboo wi.
Product Rating

Great product at a great price!

September 19, 2013
easy to install and i cant say enough good things about speedway and their products. they are great to deal with.
Yes, I recommend this product.
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the beast
Verified Purchaser
Gilbert as 85234
Product Rating

best priced conversion kit on the market

July 28, 2012
This is a great product
Yes, I recommend this product.
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Rob
Macon, GA
Product Rating

Satisfied Chevelle

April 06, 2010
Installed on my 65 Chevelle. Peforms very well. Can't beat this kit for the money. Minor modification needed to spindles -- (spindles may not have been original to car). Also, used proportioning valve from Speedway and it worked perfectly.
Yes, I recommend this product.
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FMS Racing
Klamath Falls, OR
Product Rating

Awesome Product for an awesome price

May 31, 2010
The hardest part of the whole project was getting someone to powder coat the spindles. Assembly was a breeze and the whole package fits under my 15" American Racing Rims. I could not be more pleased and recommend purchasing if you want some stopping power for a good price.
Pros:
  • Easy to follow instructio
  • Perfect Fit
Yes, I recommend this product.
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The Car Man
Verified Purchaser
Home of the Brickyard 500
Product Rating

I can stop!

May 19, 2012
I can hit the brake now and know that I am going to stop and it will be straight......unlike that drum brake pull to whichever side it decides ti go!
Yes, I recommend this product.
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gearhead195five
Baraboo wi.
Product Rating

Great product at a great price!

September 19, 2013
easy to install and i cant say enough good things about speedway and their products. they are great to deal with.
Yes, I recommend this product.
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MadPapa
Product Rating

Perfect for existing disk rebuild

December 14, 2014
We used this kit to rebuild the front disc set up on a 72' Monte Carlo that had sat under a carport for over 10 years. The kit was complete and the service was fast. My 16 year old son and his buddy installed it with little supervision. One small bag of parts that I could have gotten at the parts store were missing but Speedway quickly replaced them no problem.
Pros:
  • Very complete
Cons:
  • no instrucations
Yes, I recommend this product.
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Carguy21
Oregon City, Oregon
Product Rating

A nice way to change over to "stock" typ

September 26, 2013
Had to buy a few extras to go with the kit (master cylinder, proportioning valve) but for what you get, the price and quality worked great.
Pros:
  • everything fit good
Yes, I recommend this product.
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MiguelCamino
Sioux Falls, SD
Product Rating

Great value - new componants for used pr

September 26, 2013
Excellent value, had to modify drum spindles, the calipers had to be tweeked a bit to fit right.
Pros:
  • terrific value
Cons:
  • have to be willling to modify drum brake spindles
Yes, I recommend this product.
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Page 1 of 1
91031958

Product Q&A

12 questions : 13 answers

2 answers

I'm thinking of using this kit on my 1969 fire bird, will it be a smooth conversion without having to modify anything ? the car has already been fitted with a dual master cylinder before I bought the car. Will this one work ok for the conversion as well ?

chatoman
santa ana, Ca
September 11, 2014

I'm thinking of using this kit on my 1969 fire bird, will it be a smooth conversion without having to modify anything ? the car has already been fitted with a dual master cylinder before I bought the car. Will this one work ok for the conversion as well ?

Answers

December 15, 2014
MadPapa
If your car originally had drums up front you will have to replace the spindles with ones for disc brakes. I think Speedway sells complete kits for the conversion without the master cylinder or you could just add spindles to this kit. My advice is to buy new ones not junkyard dogs as I learned the hard way.
September 12, 2014
EricM
If your Firebird has original drum brakes then you will also need new spindles which are part number 91034900 to make it a bolt together conversion. If it has original disc brakes then your stock spindles will work fine.
1 answers

Part 91035000, your new A/F/X body spindles state you can use stock or aftermarket brakes, is this brake system compatible with these spindles?

AirmanAL
Alabama, USA
November 26, 2013

Part 91035000, your new A/F/X body spindles state you can use stock or aftermarket brakes, is this brake system compatible with these spindles?

Answers

November 26, 2013
EricM
Yes this brake kit will work in conjunction with our new G-Comp Performance spindles 91035000.
1 answers

so i can use this kit on the front of my 66 GTO with the factory spindles if i do minor machining?

Billi
Alexandria, LA, USA
November 30, 2012

so i can use this kit on the front of my 66 GTO with the factory spindles if i do minor machining?

Answers

December 03, 2012
Jason
The big top bolt that retains the backing plate goes into a boss on the spindles. This boss needs to be machined down approximately 5/8” to allow the caliper bracket to sit square on the spindle. Also the lower bolt holes may not be the same diameter and either the spindle or the bracket can be drilled to accept the bigger bolts.
1 answers

will this brake kit work on my 73 2door nova that has original front drum brakes?

December 29, 2011

will this brake kit work on my 73 2door nova that has original front drum brakes?

Answers

December 30, 2011
Jason
This kit will only work with disc brake spindles. We do offer part #28612325 that will work with drum spindles
1 answers

I plan on putting this on a 67 Firebird which will be a daily driver for my son. When it comes time to replace the pads can they be purchased locally or do we have to order online? Just need to know so that we allow enough lead time when the pads start to

Tinkerer
May 21, 2011

I plan on putting this on a 67 Firebird which will be a daily driver for my son. When it comes time to replace the pads can they be purchased locally or do we have to order online? Just need to know so that we allow enough lead time when the pads start to

Answers

May 23, 2011
Jason
These are a 69-77 Mid size GM caliper, you should be able to buy pads at any auto parts store or from Speedway
1 answers

Hi, Will this kit fit a 63 Nova and what spindle do I use? I have 5 boldt drum spindle. Thanks, Ken

April 26, 2011

Hi, Will this kit fit a 63 Nova and what spindle do I use? I have 5 boldt drum spindle. Thanks, Ken

Answers

April 28, 2011
Bill
I am sorry, this disc brake kit will not fit your 1963 Chevy Nova. It fit's 64-72 Chevelle, 67-72 Camaro and Firebird, 68-74 Nova, Ventura, Apollo. Speedway Motors does not offer a brake kit for your vehicle.
1 answers

Does this kit fit '67 Camaro? This was a 6 cylinder car and I am putting in a 350 with th350trans.Can I keep the master and valve as is? I do not plan on adding power booster. Should I put new coil sprins in when I do the spindals?

Dan
Apple Valley, Ca
September 16, 2011

Does this kit fit '67 Camaro? This was a 6 cylinder car and I am putting in a 350 with th350trans.Can I keep the master and valve as is? I do not plan on adding power booster. Should I put new coil sprins in when I do the spindals?

Answers

September 19, 2011
Jason
This kit will work on:64-72 GM Midsize (Chevelle) 67-72 Camaro and Firebird 68-74 Nova,Ventura,Apollo THIS DISC KIT WILL ((NOT)) WORK WITH 14"WHEELS, ONLY 15" OR LARGER. THIS KIT MUST BE USED WITH DISC-BRAKE STYLE SPINDLES, OUR PART NUMBER 91034900.
1 answers

A previous question asked was about it fitting a 63 Nova? If it has the original drum brake spindles isn't all that has to be done is the top boss milled down about 0.6 inches? Aren't the bearing sizes the same?

June 14, 2011

A previous question asked was about it fitting a 63 Nova? If it has the original drum brake spindles isn't all that has to be done is the top boss milled down about 0.6 inches? Aren't the bearing sizes the same?

Answers

June 16, 2011
John
This kit will work on:64-72 GM Midsize (Chevelle) 67-72 Camaro and Firebird 68-74 Nova,Ventura,Apollo It can be installed on drum brake spindles on these vehicles by milling off .610 of the upper boss that retained the backing plate and in some cases drilling and threading the same boss deeper for caliper bracket attachment. To use on a different year as an example the earlier 63-67 Nova would require different bearings and brackets for proper caliper to rotor alignment. You may want to check with other suppliers for the earlier kit.
1 answers

Can i use this setup for back break conversion ? 1964-1974 GM A-F-X-Body

NJ
January 05, 2011

Can i use this setup for back break conversion ? 1964-1974 GM A-F-X-Body

Answers

January 07, 2011
Pat
This part # 91031958 is designed for a front axle application only .
1 answers

I have a 64 El Camino. If I used this kit, does it just attach to the factory spindles, or do I have to replace them?

Marty
Royal Oak, Mich.
November 15, 2011

I have a 64 El Camino. If I used this kit, does it just attach to the factory spindles, or do I have to replace them?

Answers

November 16, 2011
John
Part # 91031958 If converting to disc brakes the original spindle could be used but it would require modification. The upper threaded boss for the backing plate bolt would need to be machined or ground down .610” to allow the caliper bracket to position properly. Or you can use our new disc brake spindles number 91034900 and at that point everything would be a bolt in project. If the rest of the brake system is original we suggest some changes to the plumbing so the front brakes are full pressure and direct from the master cylinder and in the line to the rear to plumb in an adjustable proportioning valve such as part number 91031353. When adjusted properly this will ensure even stopping front to rear under panic braking.
Page 1 of 2

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(Part #91034900)
                        

These spindles allow you to easily and affordably convert your stock drum front brakes to the original style GM front disc brakes. These new replacement forged steel disc brake spindles fit GM A-body, F-body and X-body passenger cars. These spindles are stock height, not dropped.

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The primary difference between disc brake spindles and drum brake spindles is the thickness of the upper mount boss. The upper boss is 5/8" thicker on drum brake spindles than on the disc brake spindles. Spindles work well with Speedway disc brake kit 910-31958.

Fits the following applications: 

  • 1964-72 A-Body - Chevelle, Malibu, GTO, LeMans, 442, Cutlass, GS, Skylark
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1964-1974 GM Disc Brake Booster Conversion Kit Combo
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When you put modern disc brakes on the front of your 1964-1974 GM midsize car, you should update the master cylinder as well. Why not go to this simple bolt on power brake system? The 1" bore Corvette-style master cylinder features two different outlet sizes to fit all GM applications. 

  • 1" bore master cylinder with 1/2"-20 and 9/16"-18 outlet
  • Disc brake conversion kit
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  • Fits: 1964-1974 GM midsize car
  • Includes:
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*Please refer to "Application" tab for corresponding vehicle fit.

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection