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Weld-On 1978-88 GM Flat Mount Caliper Bracket

Specs
Centerline of Holes:
5.50
Material Type:
Steel
Sold in Quantity:
Each
Finish:
Natural
Tube O.D.:
3.00
Thread Pitch:
7/16"-20
Material Thickness:
.25
Garage Sale:
No
Notes
Using a 3" axle and metric caliper, the approximate height from top of caliper to center of tube is 6.75". Minimum inside wheel ID is approx 13.5"
Weld-On 1978-88 GM Flat Mount Caliper Bracket

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

These caliper brackets mount flat and must be welded onto your 3" diameter axle tube. Designed to mount a 1978-1988 GM metric car front caliper for use with an 11.75" diameter rotor. Brackets are 1/4" thick.

IMCA APPROVED

Customer Reviews

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

gus
Verified Purchaser
Thief River Falls, MN

i would buy this product again

June 10, 2015
quality product
Pros:
  • QUALITY PRODUCT
  • Very fair price
Cons:
  • None
Yes, I recommend this product.
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Was this review helpful? 0 0

32Bob
Verified Purchaser
San Antonio, TX, USA

Worked very well

October 20, 2014
I put these on an old Olds rear axle with 3" tubes. They fit the tubes and calipers well, made my job much easier.
Pros:
  • Good Quality
Yes, I recommend this product.
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DirtyJohnDeereHat
Verified Purchaser
baltimore, m.d.

great product

April 20, 2012
these are nice so you can put chevy brakes on anything. with a little grinding i put chevy front brakes on the back of my jeep dana 44 rear that had drums.
Pros:
  • Easy To Use
  • Well Made
Yes, I recommend this product.
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baengineman
Verified Purchaser
Havana, Ks

Excelent part

May 27, 2011
Works great on 3in tube 9 housings with 11.75in rotors.
Pros:
  • Fits perfectly
Yes, I recommend this product.
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Was this review helpful? 0 0

apache
Verified Purchaser
FT. Worth, TX

Good Product

March 28, 2011
Works Good
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

3 questions : 3 answers

1 answers

what slip on rotors can be used with these brackets need 5X4 3/4 bolt pattern rotors. says needs 11 3/4 rotor. 79 pontiac trans am rear rotors are 11.16. will these work? they are 1 inch thick. 79 caddy seville rotors are only 10.5 inches

timc1975
August 19, 2013

what slip on rotors can be used with these brackets need 5X4 3/4 bolt pattern rotors. says needs 11 3/4 rotor. 79 pontiac trans am rear rotors are 11.16. will these work? they are 1 inch thick. 79 caddy seville rotors are only 10.5 inches

Answers

August 20, 2013
Jason
Bracket number 91641009 is designed to work with the separate hat and rotor configuration such as number 91031931 or 91031933. If you want to use the smaller diameter Trans am rotors you would need to alter the bracket by a little over a quarter of an inch to get full rotor contact with the brake pads.
1 answers

can they be welded on a 8"ford rear end with a 21/4" axle tube ? or do i need a spacer to build fill the gap?

leetagg
Lincoln, ME 04457, USA
March 12, 2013

can they be welded on a 8"ford rear end with a 21/4" axle tube ? or do i need a spacer to build fill the gap?

Answers

March 12, 2013
Jason
This GM flat mount caliper bracket is designed for a 3" axle tube and approximate height from top of caliper to center of tube is 6.75". To use on a 2-1/4" axle tube you would need to build a spacer keeping the correct height of caliper
1 answers

What thickness material is this made from? 3/16?

November 18, 2011

What thickness material is this made from? 3/16?

Answers

November 21, 2011
Jason
The oveall thickness is .250"
Page 1 of 1

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Weld-On 1978-88 GM Metric Caliper Bracket
(Part #91641010)
                        

Mounts 1978-1988 GM front caliper to any 3" tube rear end using 11-3/4" diameter rotors. Fully machined steel with punched lightening holes. Measures approximately 5-1/2" between mounting holes.

IMCA APPROVED

1978-UP GM Metric Clamp-On Caliper Bracket
(Part #91641011)
                        IMCA APPROVED 

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1978 and up metric calipers measure approximately 5-1/2" between mounting holes.

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GM Caliper Slider Bolt
(Part #8352300542)
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IMCA 1978-1988 GM Metric Caliper, Right Hand, 7/16-20 Inlet, Racing
(Part #91031045-R)
                        

These stock replacement single piston Metric calipers were standard equipment on 1978-88 GM mid-size cars (Cutlass, Grand Prix, Regals, Monte Carlo, etc.). They feature a 2.38" single piston, shielded bottom inlet, and will save 3-1/2 lbs. per side compared to mid-size 1969-1977 caliper.

 

  • IMCA approved
  • No core charge required
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  • Brake pads & bolts sold separately

 

Note: Does NOT include brake pads or slider bolts and bushings.