Products to Compare (max of 3)
X
Compare
ALWAYS SECURE
America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
Filters
Menu
Contact
Help Center
x
x
How to Contact Us

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

Basic Weld-On Rear Disc Brake Kit for 1969-77 GM Caliper, 3 In BS

SAME DAY SHIPPING! Order within the next 3 hours 37 minutes and receive same day shipping

Free Shipping Free Shipping
Specs
Sold in Quantity:
Kit
Finish:
Natural
Rotor Construction:
Vented
Rotor Diameter:
11.75
Rotor Hat Bolt Pattern:
8 x 7.00"
Material Type:
Carbon Iron
Bolt Pattern:
Multi: 5 on 5"/4.75"/4.50"
Rotor Location:
Rear
Rotor Shape:
Round
Thread Pitch:
7/16"-20
Garage Sale:
No
Drilled:
No
Slotted:
No
Stud Diameter:
.5
Rotor Thickness:
.81
Notes
Includes caliper brackets, rotors, rotor hats, bolts, and instructions.
Basic Weld-On Rear Disc Brake Kit for 1969-77 GM Caliper, 3 In BS

Click image to enlarge

Please NOTE the following about this product:

  • This item is sold as a kit.

Details

Reviews

Q & A

What's in the Box

Replace those old drum brakes with modern rear disc brakes. Included steel caliper brackets weld to your 3" tube rearend, making this a universal kit for a variety of applications. Basic kit includes caliper brackets for '69-'77 GM mid-size car front calipers, Pro-lite vented .810" x 11-3/4" iron rotors, steel brake hats (3" backspace, 6-1/4" I.D.), and rotor bolts.

Hat fits 5 on 4-1/2", 5 on 4-3/4" and 5 on 5" bolt circles.

910-31920 Instructions (PDF)

Instructions (PDF)

Customer Reviews

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

RockstaR Motorsports
Myrtle beach, South Carolina

Disc Brake Kit

February 07, 2010
Have purchased 3 sets of these. 2 for a dirt track car and the third on our drag truck. Great kit and simple. Will buy them many more time I'm sure.
Pros:
  • Very Universal
  • Lightweight
  • Simple Install
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Page 1 of 1

Product Q&A

3 questions : 3 answers

1 answers

will this rotor hat fit 6.25 axle flange Ford nine inch aftermarket axles

Troym
Molalla, OR 97038, USA
April 24, 2014

will this rotor hat fit 6.25 axle flange Ford nine inch aftermarket axles

Answers

April 24, 2014
EricM
No you will need to machine the axle flange down to accept these hats. The hat will accept a maximum flange diameter of 5.83"
1 answers

BACKSPACE HOW DO I KNOW WHAT BACKSPACE HAT TO USE. THE 3IN. OR 1.96. HOW DO I MEASURE IT. WHERE TO WHERE?

STEVE2005
February 04, 2014

BACKSPACE HOW DO I KNOW WHAT BACKSPACE HAT TO USE. THE 3IN. OR 1.96. HOW DO I MEASURE IT. WHERE TO WHERE?

Answers

February 04, 2014
EricM
The backspace will change how far inboard the rotor is mounted. The hat backspace measurement will be from the face of your axle flange in to where the rotor will be mounted. A 3" backspace hat will position the rotor 3" inboard from the axle face. Things to consider when choosing a backspace for the hat would be clearance around the brake caliper (both to the wheel and the to the chassis/body) and the position of the bracket for welding to the axle. For some applications the backspace may not be too critical, others it could be a make or break it scenario.
1 answers

what is the i.d. of the hat?

bob
ft.collins co
August 16, 2011

what is the i.d. of the hat?

Answers

August 17, 2011
Jason
THIS HAT NOW HAS ALL 3 BOLT PATTERNS 5 X 4 1/2" BOLT CIRCLE 5 X 4 3/4" BOLT CIRCLE 5 X 5" BOLT CIRCLE WITH 1/2" WHEEL STUD HOLES HAT OFFSET 3.02" STUD HOLE DIAMETER .52" CENTER HOLE I/D 3.06" FACE THICKNESS 0.09" CLEARANCE I/D 5.83" ROTOR MOUNT BOLT HOLE .325" ID - 6.25"
Page 1 of 1

You may also be interested in:

Speedway Rear Disc Brake Kit with Emergency Brake, 3 Inch Backspace
(Part #91031933)
                        Replace those old drum brakes with modern rear disc brakes. This affordable rear disc brake kit conversion gives you an emergency brake just like your family car has. The steel caliper bracket welds to your 3" axle tube, so it will fit virtually any application. The calipers accept either GM or Lokar type E-brake cables and are tapped to accept the common 7/16"- 20 banjo fittings. The 11-3/4" x .81" vented iron rotors will give you plenty of stopping power. 

Steel rotor hat fits 5 on 4-1/2", 5 on 4-3/4", and 5 on 5" bolt patterns and has a 3" backspace.

NSRA Legal

910-31933 Instructions (PDF)

Weld-On Rear Disc Brake Kit, 1969-77 GM Caliper, 3 Inch Backspace
(Part #91031936)
                        

Replace those old drum brakes with modern rear disc brakes. Steel rotor hat mounts .81" x 11-3/4" Pro-lite vented iron rotors and calipers to 3" tube rear end.  Complete with rotors, hats, calipers (7/16"-20 inlets), brackets, brake pads, caliper brackets and slider bolts. 

Hat fits 5 lug hubs with 4-1/2", 4-3/4", or 5" bolt circle.

Installation note: Due to a wide variation in daimeters of axle flanges and center hubs from manufacturers, it may be necessary to turn these diameters down to the proper dimensions.

910-31936 Instructions (PDF)

Basic Weld-On Rear Disc Brake Kit for 1969-77 GM Caliper, 1.96 In BS
(Part #91031910)
                        

Replace those old drum brakes with modern rear disc brakes. Included steel caliper brackets weld to your 3" tube rearend, making this a universal kit for a variety of applications. Basic kit includes caliper brackets for '69-'77 GM mid-size car front calipers, Pro-lite vented .810" x 11-3/4" iron rotors, steel brake hats (1.96" backspace), and rotor bolts.

Hat fits 5 on 4-1/2", 5 on 4-3/4" and 5 on 5" bolt circles.

910-31910 Instructions (PDF)

Basic Weld-On Rear Disc Brake Kit for 1978-88 GM Caliper, 3 In BS
(Part #91031925)
                        

Replace those old drum brakes with modern rear disc brakes. Included steel caliper brackets weld to your 3" tube rearend, making this a universal kit for a variety of applications. Basic kit includes caliper brackets for '78-'88 GM metric car front calipers, Pro-lite vented .810" x 11-3/4" iron rotors, steel brake hats (3" backspace, 6-1/4" I.D.), and rotor bolts.

Hat fits 5 on 4-1/2", 5 on 4-3/4" and 5 on 5" bolt circles.

910-31925 Instructions (PDF)

Instructions (PDF)