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1973-77 GM Midsize 11 Inch Brake Rotor, 5 on 5 Inch

Specs
Sold in Quantity:
Each
Bolt Pattern:
5 on 5"
Finish:
Natural
Rotor Diameter:
11.00
Rotor Construction:
Vented
Material Type:
Cast Iron
Rotor Location:
Front
Rotor Shape:
Round
Thread Pitch:
5/8"-11
MFG. Part #:
910-31064
Drilled:
No
Slotted:
No
Stud Length:
2.25
Stud Diameter:
0.63
Rotor Thickness:
1.00
Weight:
23.50
1973-77 GM Midsize 11 Inch Brake Rotor, 5 on 5 Inch

Click image to enlarge

Details

Reviews (6)

Q & A (19)

What's in the Box

Info

1973-1977 GM mid sized front brake rotor. 5 on 5" with 5/8" coarse studs installed. 11" diameter x 1".  IMCA Approved.

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



 

Item Details

23.5 lbs.

Application

This rotor fits the following spindles:

  • 1973-1977 Buick Century, Regal
  • 1975-1978 Buick Skylark
  • 1970-1978 Chevy Camaro
  • 1977-1978 Chevy Full size
  • 1973-1977 Chevy Malibu, Monte Carlo
  • 1975-1978 Chevy Nova
  • 1973-1977 Oldsmobile Cutlass
  • 1970-1978 Pontiac Firebird
  • 1973-1977 Pontiac Grand Prix, LeMans GTO
  • 1975-1978 Pontiac Ventura, Phoenix

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.

Specs

This rotor uses the following bearings and seals:

  • Outer Bearing Cone 912TLM11949
  • Cup 912TLM11910
  • Inner Bearing Assembly 912TS6
  • Inner Seal 912S19753

Customer Reviews

Rated 4.8 out of 5 by 6 reviewers.
RATING BREAKDOWN
6 reviews
5 Stars
5
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Kelly
Verified Purchaser
Verified Reviewer
Olivet Mi

Great deal

June 16, 2015
Was a great deal, ready to use and had mthe bolt pattern I needed
Yes, I recommend this product.
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tommy9
Verified Purchaser
penna.

nice product

March 24, 2015
Have used these rotors on my asphalt modified the last three years. So for no problems the have taken a few hits and held up well. Just ordered another set
Yes, I recommend this product.
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seven
ar

great for the money

September 23, 2013
bought this rotor for street stock Camaro works great fair price
Yes, I recommend this product.
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88675309
Asheville, NC, USA

Great rotor for street stock on dirt

January 19, 2013
When they say not to use them on asphalt, that's what they mean. I had a rf on break going into a corner. A friend of mine had 2 more break. Just don't use them on asphalt. I used these on dirt for years with no issues
Pros:
  • Easy Installation
Yes, I recommend this product.
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barry
Verified Purchaser
mt

Great Thanks

July 10, 2011
Racing
Pros:
  • Easy To Install
Yes, I recommend this product.
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Was this review helpful? 0 0

dirtmod 12
Loveland Colorado

BEST 5 0n 5 PROBLEM SOLVER MADE TODAY

July 10, 2010
My circle burnner modified had 5 on 4 1/2 rotors. This app was the fastest change over to 5 on 5. A +++++++++++++
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

19 questions : 21 answers

1 answers

Can this be used on a 1989 Caprice? Maybe with different bearings?

jla428
March 24, 2015

Can this be used on a 1989 Caprice? Maybe with different bearings?

Answers

March 25, 2015
EricM
Yes this can be used on a 1989 Caprice as long as your car has 11" rotors stock. Some select cars had 12" rotors and this will not work on those. You will need the following bearings to install this on your Caprice spindle: 912S19753 - Seal 912TS6 - Inner bearing 912TS34 - Outer bearing. The race (cup) that is installed in the rotor will need to be removed and replaced with this race.
1 answers

What is the part number of the stud? What is the part number of the stud? Can you provide the Dorman part number?

Firegod
June 06, 2014

What is the part number of the stud? What is the part number of the stud? Can you provide the Dorman part number?

Answers

June 06, 2014
EricM
Stud number 91005958 is a replacement for this rotor. Sorry I do not have a Dorman part number for a replacement stud.
2 answers

I have a asphalt mod, was just wondering why this rotor can't be used on asphalt

Pacman
June 27, 2013

I have a asphalt mod, was just wondering why this rotor can't be used on asphalt

Answers

March 25, 2015
tommy9
Used these on my mod, no problems. Think the lite weight of front helps
June 28, 2013
Jason
This rotor is designed for dirt track racing only, the center of rotor will not withstand the stress from asphalt/pavement racing.
1 answers

I need a rotor like this for street use but with 5 x 5 and 1/2 stud for 1970 camaro. Would like to have slot and drilled but would take it without.

Rod
Tn
September 16, 2012

I need a rotor like this for street use but with 5 x 5 and 1/2 stud for 1970 camaro. Would like to have slot and drilled but would take it without.

Answers

September 17, 2012
Eric
Sorry I do not have a rotor for your application with 5 on 5 bolt pattern and 1/2" studs. All of mine with that pattern have 5/8" studs installed for circle track use.
1 answers

will these fit a 70 chevelle

August 28, 2011

will these fit a 70 chevelle

Answers

August 29, 2011
Jason
THIS ROTOR FITS THE FOLLOWING SPINDLES: 73-77 GM MIDSIZE (MALIBU,MONTE CARLO,CUTLASS, LEMANS,REGAL,ETC. 70-78 CAMARO,FIREBIRD 75-78 NOVA,SKYLARK,VENTURA 77-78 CHEVY FULL SIZE (EXCEPT STATION WAGON, POLICE,TAXI HD) THIS ROTOR IS DESIGNED FOR DIRT TRACK APPLICATIONS. IT SHOULD ((NOT)) BE USED FOR ASPHALT/PAVEMENT RACING.
2 answers

will this rotor work on a 1979 camaro spindle? if not do you have a rotor that has 5x5 bolt pattern that will?

September 28, 2011

will this rotor work on a 1979 camaro spindle? if not do you have a rotor that has 5x5 bolt pattern that will?

Answers

February 18, 2016
owracer
This rotor will fit the 79-81 Camaro spindle with the use of a A34 outer bearing set. This is the outer bearing set for a metric spindle. Bearing bore is .8430 and cup outside diameter is 1.7810.
September 29, 2011
Zach
Speedway part number 91031064. This particular rotor will not fit a 1979 Camaro spindle, it will fit up to a 78 Camaro. Take a look at part number 91031061. This 1979-up GM Metric front rotor will work with a Set # 6 inner bearing/race (part number 91031048) which fits most spindles. 5 on 5" with 5/8" coarse studs installed. 10.5" diameter x 1". Must be used with 912-TS3 outer bearings for 1982-1987 spindle applications. These rotors are for dirt track applications only, they will not stand up the the heat on an asphalt application.
1 answers

Can this rotor be drilled on a 4.75 hole pattern also?

January 03, 2011

Can this rotor be drilled on a 4.75 hole pattern also?

Answers

January 05, 2011
Tige
The rotors can technically be drilled again, but I would not run it if was... There is enough "meat" there to give the rotor the extra holes, but it will make a lot weaker in doing so. I’m sure the rotor would be ok at low temp conditions, but when you get some heat on it I wouldn’t trust it!
1 answers

Use of rotor Would this rotor be safe for a street rod? I don't plan on doing any circle track or drag racing with the car, just cruising around.

Riata7
Texas
October 03, 2012

Use of rotor Would this rotor be safe for a street rod? I don't plan on doing any circle track or drag racing with the car, just cruising around.

Answers

October 03, 2012
Jason
This rotor is designed for dirt track racing. You could use for daily driver on street but not for street/pavement racing. This rotor comes with 5/8" studs, most street wheels are 7/16" or 1/2"
1 answers

Hello, Will these 5 x 5 rotors work on your -1959 Chevy truck BASIC disc brake conversion kit? Thanks, Tim

n/a
Kansas
May 08, 2015

Hello, Will these 5 x 5 rotors work on your -1959 Chevy truck BASIC disc brake conversion kit? Thanks, Tim

Answers

May 11, 2015
Eric
Expert
Yes these rotors will work along with the basic disc brake kit 91631981. Keep in mind that these rotors have 5/8" studs. Most street wheels will not accept that stud size.
1 answers

I purchased these rotors for a street rod im building, problem is that i can't fit a 1" lug nut on wheels I'm using. Is there any smaller wheel studs that can fit these rotors? I found a lug nut that would fit but it was for fine thread not course.

Ben
San Antonio
June 28, 2015

I purchased these rotors for a street rod im building, problem is that i can't fit a 1" lug nut on wheels I'm using. Is there any smaller wheel studs that can fit these rotors? I found a lug nut that would fit but it was for fine thread not course.

Answers

June 29, 2015
Eric
Expert
We offer a 1/2" fine thread wheel stud 54546190 which could be used in this rotor. The 3" length may be a little long for some wheel and lug nut combinations but they could be cut down to the length you need.
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