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1969-1972 GM Midsize 11 Inch Brake Rotor, 5 on 4 3/4 Inch

Specs
Sold in Quantity:
Each
Bolt Pattern:
5 on 4.75"
Finish:
Natural
Rotor Diameter:
11.00
Rotor Construction:
Vented
Material Type:
Cast Iron
Rotor Location:
Front
Rotor Shape:
Round
Thread Pitch:
7/16"-20
MFG. Part #:
910-65390
Drilled:
No
Slotted:
No
Stud Length:
0.80
Stud Diameter:
0.44
Flange Diameter:
6.46
Rotor Thickness:
1.05
1969-1972 GM Midsize 11 Inch Brake Rotor, 5 on 4 3/4 Inch
VIDEO
1969-1972 GM Midsize 11 Inch Brake Rotor, 5 on 4 3/4 Inch

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Details

Reviews (0)

Q & A (3)

What's in the Box

Info

We stock those hard-to-find replacement brake rotors for your 1969-1972 GM midsize car. These rotors are specifically designed for the rigors of dirt track racing.  Drilled with a 5-on-4.75" bolt circle. Includes 7/16" fine quick-start wheel studs (installed).

  • 1969-1972 GM Midsize
  • 11 Inch Brake Rotor
  • 5 on 4-3/4 Inch
  • 7/16" fine studs installed
  • 11" diameter x 1"
  • IMCA Approved

This rotor is designed for dirt track applications and should NOT be used for asphalt racing.

 

 

Wheel stud info:

  • .564" knurl
  • .375" shoulder
  • 7/16"-20 threads
  • 1-5/16" long
  •  

 

Application

This rotor is original equipment on:

  • 1969-1972 Chevelle, Monte Carlo
  • 1969-1974 Nova
  • 1970-1972 Cutlass, 442
  • 1969-1972 GTO, LeMans, Grand Prix
  • 1971-1974 Pontiac Ventura

To use these rotors on any of these cars, you will want to order:

  • Outer bearing cone 912-TLM11949
  • Inner bearing assembly 912-TS6
  • The outer bearing cup in the rotor is the correct one for the application. When it needs to be replaced, use 912-TLM11910
  • You can purchase the correct inner grease seal for these original applications at your local auto parts store

·         Replaces factory disc brake rotor on 1967-72 Chevelle/El Camino 1967-69 Camaro and 1968-74 Nova

·         Can be used to convert a drum brake system from 1964-72 Chevelle/El Camino, 1967-69 Camaro or 1968-74 Nova when used with disc brake spindles such as p/n 910-34900

·         Works with factory disc brake style spindles such as p/n 910-34900 or our G-Comp spindle 910-35000

 

Notes

Proper Break-In Procedure for Steel or Cast Iron Rotors

New steel/iron rotors should be bedded in before being used in racing conditions. Proper bedding will prepare the rotor surface, prolong the rotor's life, and make it more resistant to thermal checking or cracking under severe braking conditions. The following procedures should be performed when bedding in both steel and cast iron rotors. It is best to bed in a new rotor using a used set of pads, preferably ones which will not create heat rapidly. Generating heat too rapidly will thermal shock the rotors. Likewise, when bedding in a new set of brake pads it is best to perform the process on a used rotor. This new/used bedding process permits controlled bedding of each individual component.

Make sure rotor surfaces are free from oils, grease, and brake fluid. Run vehicle up to a moderate speed and make several medium deceleration stops to heat up the rotor slowly. This will help reduce the chance of thermal shock caused by uneven heating of the rotor. Pull into the pits and allow the rotor to cool to ambient air temperature. Care should be taken not to ride the brakes into the pits as this may hot spot the rotor causing premature wear to the surface or structural damage.

Customer Reviews

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Product Q&A

3 questions : 3 answers

1 answers

1969-1972 GM Midsize 11 inch brake rotor, 5 on 4.75". Can these be obtained with a 5 x 5" stud pattern? I have a fatman front clip on a 49 Olds that was installed using this rotor assembly. Is it possible to replace my 5 x 4.75" rotors with these with a 5 x 5" pattern to match the stock rear axle pattern? There does not appear to be wheels available with the combination of these two patterns in the basic chrome smoothie that I am using.

UncleAl
Florida, USA
January 24, 2015

1969-1972 GM Midsize 11 inch brake rotor, 5 on 4.75". Can these be obtained with a 5 x 5" stud pattern? I have a fatman front clip on a 49 Olds that was installed using this rotor assembly. Is it possible to replace my 5 x 4.75" rotors with these with a 5 x 5" pattern to match the stock rear axle pattern? There does not appear to be wheels available with the combination of these two patterns in the basic chrome smoothie that I am using.

Answers

January 28, 2015
EricM
Sorry we do not offer a '69 to '72 rotor with 5 on 5" bolt pattern.
1 answers

1980 caprice front rotor 4.75-4.5 Hi ,I'm using the frame and drive train from a 1980 caprice in my build.Right now I have 5 on 5 at the rear axel with adaptors to 5 on 4.5. Now the front is 5 on 4.75 and I don't have room for adaptors,nor are the rotors able to be re-drilled . Is there any rotors available to fit the caprice frame with 5 on 4.5 bolt pattern ? I already have hard to find wheels that I would like to use

Phantom51
Canada
December 02, 2014

1980 caprice front rotor 4.75-4.5 Hi ,I'm using the frame and drive train from a 1980 caprice in my build.Right now I have 5 on 5 at the rear axel with adaptors to 5 on 4.5. Now the front is 5 on 4.75 and I don't have room for adaptors,nor are the rotors able to be re-drilled . Is there any rotors available to fit the caprice frame with 5 on 4.5 bolt pattern ? I already have hard to find wheels that I would like to use

Answers

December 02, 2014
EricM
Rotor part number 91031067 can be used with your 1980 Impala spindles as long as the stock rotors are 11" diameter. You will need outer bearing & race 912TS34, inner bearing 912TLM11949, inner race 912TLM11949, and seal 912S19753
1 answers

Are inner and outer races for Bearing # 91031051 (Mustang II Spindle) already installed in the hub, or does it come "bare" with no races installed?

Texas
July 11, 2011

Are inner and outer races for Bearing # 91031051 (Mustang II Spindle) already installed in the hub, or does it come "bare" with no races installed?

Answers

July 14, 2011
John
These rotors come with the races installed for the intended application of the 1969-1972 midsize GM. When installing on different spindles such as the Mustang II spindles you will need to use the appropriate bearings, races, and seals which Speedway offers in kit number 91031051.
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