Products to Compare (max of 3)
X
Compare These Parts
ALWAYS SECURE
America's Oldest Speed Shop ® Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Filters
Menu
Help Center
Help Center
x
Help Center

U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
Menu
x

Disc Brake Kit 1978-88 GM Caliper to Early Ford Spindle, 5 on 4-3/4 In

SAME DAY SHIPPING! Order within the next 36 minutes and receive same day shipping

Free Shipping Free Shipping
Specs
Sold in Quantity:
Kit
Bolt Pattern:
5 on 4.75"
Finish:
Natural
Rotor Diameter:
11.00
Caliper Finish:
Natural
Rotor Construction:
Vented
Material Type:
Carbon Iron
Caliper Pistons:
Single
Rotor Location:
Front
Rotor Shape:
Round
Thread Pitch:
7/16"-20
Hardware Included:
Yes
Drilled:
No
Slotted:
No
Centerline of Holes:
5.50
Stud Length:
.94
Stud Diameter:
.44
Rotor Thickness:
1.00
Notes
Includes rotors, bearings and seals, calipers, pads, brake hoses, brake tabs, and caliper brackets.
Disc Brake Kit 1978-88 GM Caliper to Early Ford Spindle, 5 on 4-3/4 In
Disc Brake Kit 1978-88 GM Caliper to Early Ford Spindle, 5 on 4-3/4 In
Disc Brake Kit 1978-88 GM Caliper to Early Ford Spindle, 5 on 4-3/4 In
VIDEO
Disc Brake Kit 1978-88 GM Caliper to Early Ford Spindle, 5 on 4-3/4 In

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 (15)

Q & A (12)

What's in the Box

Info

Easily install 11" rotors and 1978-88 GM Metric calipers to your 1937-48 Ford passenger car style spindles with no machine work needed. This disc brake kit is great for street rods based on 1932-1948 Fords. For lightweight cars like T-buckets or early roadsters, we recommend the Wilwood kits. This front disc brake conversion kit works well with bolt-on steering arms. The 11" diameter rotors have the GM wheel bolt pattern of 5 x 4-3/4". Calipers have 7/16"-20 inlets.

910-31946 Instructions (PDF)

Item Details

11" Rotor and 1978-Up GM Caliper to Early Ford Spindles

Customer Reviews

Rated 4.8 out of 5 by 15 reviewers.
RATING BREAKDOWN
15 reviews
5 Stars
12
4 Stars
3
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

tn34
Verified Purchaser
Nashville TN

34 Disk Brake Kit

June 06, 2016
Great quality and fit, very pleased.
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Ken
Verified Purchaser
Hopkinsville, KY

I would buy this product again

April 28, 2016
Same day shipping and all items were in stock
Pros:
  • All Hardware Furnished
  • Very Easy To Install
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

boda
Verified Purchaser
ill.

i would use again

April 08, 2016
look good with gasser wheels
No, I would not recommend this product.
Full Size Image

Was this review helpful? 0 0

steveareno
Verified Purchaser
Verified Reviewer
kingsburg ca

Iwould buy again

November 16, 2015
nice to have everything in one kit... saves a lot of running around for small partd
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Edwin
Verified Purchaser
Webster TX

Great Kit

October 24, 2015
Just as represented, and worked perfect for my 32. Very complete kit.
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

tripower
Verified Purchaser
Verified Reviewer
Villa Grove ,Illinois

Great brakes

September 03, 2015
The set up looks cool on my 1948 Mercury. Can't wait to try it at speed. Should be on road in 6 mos. or so.
Pros:
  • Parts Are Easy To Find
  • Speedway Guarantee
  • Can't Ask For More
  • Everything Fit The Way It
Cons:
  • None
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

bobcat
Verified Purchaser
Verified Reviewer
al.

I would recomend to a friend

August 17, 2015
caliber through bolts so warped could hardly start in second side without pushing rubber seal out. causes caliper to bind and not float.
Pros:
  • Easy To Install
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

33dool
Verified Purchaser
Verified Reviewer
Torrance, CA

I have brakes!

July 19, 2015
I went from free spndles with no brakes, to a disc upgrade from speedway. Now I have disc brakes, and my t bucket stops fine.
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Altasierramike
Verified Purchaser
Granada hills ca.

Complete front brakes.

May 31, 2015
Everything you need is in this kit.. Mock it up first to make sure you don't need to make adjustments for clearances.
Pros:
  • Complete kit
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

jfrank
Milwaukee, WI, USA

Doesn't get any easier than this

November 20, 2013
I'm still in mock up, so I haven't locked everything down or road tested it. To this point everything went together like butter. It could easily be a weekend job or just an afternoon, start to finish. I didn't see it in the description ,but mine didn't come with the outer bearings. LM11949 Very happy with this purchase
Pros:
  • Simplicity
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Page 1 of 2

Product Q&A

12 questions : 13 answers

1 answers

How much will this widen the track vs a stock 40 drum?

Stan65
Illinois
March 22, 2015

How much will this widen the track vs a stock 40 drum?

Answers

March 23, 2015
EricM
On a 48” axle the track width with brake kit number 91031946 is 56.22 or 4.11” per side for the spindle and brakes. On your drums measure from the kingpin center line to the face of the drum for comparison.
1 answers

will this kit fit the stock 46-48 square back spindles

crankshaft29
October 15, 2014

will this kit fit the stock 46-48 square back spindles

Answers

October 15, 2014
EricM
This kit will work on 37-48 spindles including the 42-48 square back as the bolt pattern for mounting is the same.
1 answers

Which upper steering arm will fit with kit? Which upper steering arm will fit with kit?

Hallott1
June 02, 2014

Which upper steering arm will fit with kit? Which upper steering arm will fit with kit?

Answers

June 03, 2014
EricM
Since the caliper bracket goes between the rotor and spindle on the outside the nearly any upper steering arm should work fine whether it be the hoop style, flat plate, or the laser cut steel arms.
1 answers

I bought this kit. What "bolt on" steering arms are you saying will fit? I need to use something on the order of 7022754 just to try to clear the caliper which appears to stick out about 2" and I don't think those would work. Wish I had known that

gmcrd
May 01, 2014

I bought this kit. What "bolt on" steering arms are you saying will fit? I need to use something on the order of 7022754 just to try to clear the caliper which appears to stick out about 2" and I don't think those would work. Wish I had known that

Answers

May 02, 2014
EricM
Yes the steering arms 7022754 work just fine with this brake kit. Most all bolt on steering arms for Ford spindles will work with this kit.
1 answers

How do you set the camber with this kit when using a 4" dropped front axle?

Redbaron
Fort Lauderdale, FL, USA
February 02, 2014

How do you set the camber with this kit when using a 4" dropped front axle?

Answers

February 03, 2014
EricM
Camber is built into a solid axle front end and should be ½ to 1 ½ positive. Castor which is the tilt of the kingpin back at the top is adjusted by the hairpins or the four bars at the threaded rod ends or clevis and on a wishbone style by the location of the mount where wishbone mounts to the side of the frame. You commonly need 5-7 degrees positive castor.
1 answers

what rotors are used in this kit? are they availble at a local parts house? fyi replacement purposes only..

mred
California, USA
July 19, 2013

what rotors are used in this kit? are they availble at a local parts house? fyi replacement purposes only..

Answers

July 19, 2013
EricM
The rotors in this kit are from a 73 to 77 GM intermediate cars such as a Chevelle/Malibu.
1 answers

Do you need to use a vaccume booster, or can you use just the stock master cyllinder?

katie42
Troy, MT, USA
July 13, 2013

Do you need to use a vaccume booster, or can you use just the stock master cyllinder?

Answers

July 15, 2013
Jason
An original master cylinder can be used depending on application and bore size of the master cylinder. With a non boosted master cylinder a pedal ratio of 6.5 to 1 is suggested in order to supply enough pedal pressure to safely stop. We also recommend upgrading to a dual reservoir master for the safety factor gained. Plumbing with 3’/16 line to the disc brakes will also help achieve the higher pressure needed for the calipers and an adjustable proportioning valve is needed for the rear drum brakes along with residual valves both front and rear with 2 psi in front and 10 psi for the rear drum brakes.
1 answers

will this brake kit work with the 28-48 spindle #91032104?

Gavin
South Africa
January 13, 2013

will this brake kit work with the 28-48 spindle #91032104?

Answers

January 14, 2013
Jason
Yes this brake kit and the other brake kits offered by Speedway Motors for the Ford spindles will work on our part number 91032104 or the OEM 37-48 Ford passenger car spindles.
2 answers

Will 15 inch wheels work with this rotor kit?

Mike
St. Louis Mo.
March 16, 2011

Will 15 inch wheels work with this rotor kit?

Answers

March 21, 2011
Jason
Yes, 15” wheels should work with this kit.
May 10, 2011
oldcarrbuilder
Yes it will 14in. are a little tite but 15in. are Ok in reg. rims.
1 answers

What size lug nuts are used with these rotors?

November 10, 2011

What size lug nuts are used with these rotors?

Answers

November 10, 2011
Jason
These rotors use a 7/16-14 lug nut
Page 1 of 2

You may also be interested in:

  • Red Line 80402 CV-2 Synthetic Grease Red Line 80402 CV-2 Synthetic Grease
    View
    (0)
    $12.99
    Compare
  • Wheel Dust Caps, Chrome, 2.085 Hub I.D. Wheel Dust Caps, Chrome, 2.085 Hub I.D.
    View
    (5)
    $6.99
    Compare
  • Wilwood 140-11013-P Pro Series Front Disc Brake Kit, 1937-49 Ford Wilwood 140-11013-P Pro Series Front Disc Brake Kit, 1937-49 Ford
    View
    (0)
    $779.99
    Compare
  • Wilwood 140-11013 FDL Pro Series Front Disc Brake Kit, 1937-49 Ford Wilwood 140-11013 FDL Pro Series Front Disc Brake Kit, 1937-49 Ford
    View
    (0)
    $687.99
    Compare
  • Gorilla Automotive LN41178 Chrome Acorn Lug Nut, 7/16 Inch Thread Gorilla Automotive LN41178 Chrome Acorn Lug Nut, 7/16 Inch Thread
    View
    (7)
    $0.99
    Compare
  • Gorilla Automotive 73671N 7/16-20  Mag Wheel Locks, 3/4 In Shank Gorilla Automotive 73671N 7/16-20 Mag Wheel Locks, 3/4 In Shank
    View
    (0)
    $17.99
    Compare
  • Gorilla Automotive 41773 Wheel Installation Kit, 7/16 Inch Gorilla Automotive 41773 Wheel Installation Kit, 7/16 Inch
    View
    (0)
    $39.99
    Compare
  • Gorilla Automotive 70077B 7/16 Inch-20 Open Rally Wheel Style Lug Nuts Gorilla Automotive 70077B 7/16 Inch-20 Open Rally Wheel Style Lug Nuts
    View
    (2)
    $3.99
    Compare
  • Gorilla Automotive 73077B 7/16 In-20 Open Mag Wheel Lugs 3/4 In Shank Gorilla Automotive 73077B 7/16 In-20 Open Mag Wheel Lugs 3/4 In Shank
    View
    (0)
    $7.99
    Compare
  • Gorilla Automotive 73177B 7/16 In-20 Std Mag Wheel Lugs 3/4 In Shank Gorilla Automotive 73177B 7/16 In-20 Std Mag Wheel Lugs 3/4 In Shank
    View
    (0)
    $7.99
    Compare
  • Gorilla Automotive 90077B 7/16 In-20 Tall Acorn Lug Nuts, 60 Deg Taper Gorilla Automotive 90077B 7/16 In-20 Tall Acorn Lug Nuts, 60 Deg Taper
    View
    (2)
    $5.99
    Compare
  • Wilwood 140-11013-D FDL Pro Series Front Disc Brake Kit, 1937-49 Ford Wilwood 140-11013-D FDL Pro Series Front Disc Brake Kit, 1937-49 Ford
    View
    (0)
    $787.99
    Compare
  • Wilwood 140-11013-DP FDL Pro Series Front Disc Brake Kit, 1937-49 Ford Wilwood 140-11013-DP FDL Pro Series Front Disc Brake Kit, 1937-49 Ford
    View
    (0)
    $889.99
    Compare
  • Wilwood 140-11014 FDL Pro Series Front Disc Brake Kit, 1937-49 Ford Wilwood 140-11014 FDL Pro Series Front Disc Brake Kit, 1937-49 Ford
    View
    (0)
    $787.99
    Compare
  • Wilwood 140-11014-D FDL Pro Series Front Disc Brake Kit, 1937-49 Ford Wilwood 140-11014-D FDL Pro Series Front Disc Brake Kit, 1937-49 Ford
    View
    (0)
    $887.99
    Compare
  • Wilwood 140-11014-DP FDL Pro Series Front Disc Brake Kit, 1937-49 Ford Wilwood 140-11014-DP FDL Pro Series Front Disc Brake Kit, 1937-49 Ford
    View
    (0)
    $979.99
    Compare
  • Wilwood 140-11014-P FDL 11 Pro Series Front Disc Brake Kit, 37-49 Ford Wilwood 140-11014-P FDL 11 Pro Series Front Disc Brake Kit, 37-49 Ford
    View
    (0)
    $879.99
    Compare
  • Wilwood 290-0632 570 Brake Fluid, 12 oz Bottle Wilwood 290-0632 570 Brake Fluid, 12 oz Bottle
    View
    (3)
    $9.99
    Compare
Suggestions For You