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Basic Brake Kit, GM Metric Caliper/Mustang II Rotor to Chevy Spindle

Specs
Centerline of Holes:
5.25
Material Type:
Steel
Sold in Quantity:
Kit
Finish:
Zinc
Thread Pitch:
7/16"-20
Hardware Included:
Yes
Material Thickness:
.31
Garage Sale:
No
Notes
Includes brackets and hardware.
Basic Brake Kit, GM Metric Caliper/Mustang II Rotor to Chevy SpindleBasic Brake Kit, GM Metric Caliper/Mustang II Rotor to Chevy Spindle
Basic Brake Kit, GM Metric Caliper/Mustang II Rotor to Chevy Spindle

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

An economical, lightweight front disc brake conversion kit for 1949-54 Chevy car spindles. This kit uses 9-1/4" Mustang rotors with the easy-to-find '78-'88 GM metric calipers. This basic kit includes caliper brackets and hardware.

Note: Your spindles must be machined to accept this kit, or you can use Speedway modified reproduction forged spindles 916-32100. This kit will not work with stock 1949-54 steering arms. Not to be installed on stock 1949-54 Chevy vehicle front ends. To be used only on street rod tube or I-beam front axles when using 1949-54 Chevy spindles commonly used on Model T and Model A to 1936 Ford front ends.

916-31950 Instructions (PDF)

Item Details

GM Metric/Mustang II to Early Chevy Spindles

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Mustang II Disc Brake Rotor, 5 on 4-1/2 Inch
SKU-91031001
                        

Vented stock 9-1/4" diameter brake rotors for 1974-1980 Mustang II, Pinto, or Bobcat spindles (or Speedway brake kits using '49-'54 Chevy spindles). Brake rotors are new, not plugged or re-drilled. Has a 5 on 4-1/2" bolt pattern with corresponding 1/2" diameter fine thread wheel studs.

  • Outside Diameter of rotor disc - 9.256"
  • Thickness of vented disc - .884"
  • I.D. of back side of rotor - 6.256"
  • Rear rotor face to bearing hub - .290"
  • Outer hub diameter where wheel will mount - 5.834"
  • Outer hub height - 1.450"
  • Bearing snout is 1.60" tall, 2.55" diameter at bottom and 2.384" at outer
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Be sure to install new bearings and seals (910-31000) with your new disc brake rotors.

Front Disc Brake Kit GM Metric/Mustang II to 1949-54 Chevy, 5 on 4-1/2
SKU-91031955
                        

An economical, lightweight brake kit for 1949-54 Chevy car spindles. Your stock Chevy spindles must be machined, or use Speedway '49-'54 Chevy-style spindles. This kit uses 9-1/4" Mustang II vented rotors with common GM metric calipers.

  • Typically used on Model T and Model A to 1936 Ford front ends 
  • For use on street rod tube front axles when using 1949-54 Chevy style spindles  
  • Will not work with stock 1949-54 steering arms 
  • Not to be installed on stock 1949-54 Chevy vehicle front ends

910-31955 Instructions (PDF)

Bearing & Seal Kit for Brake Kit 910-31955
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Kit Includes:

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Speedway soft brake pad for GM Metric 1978-Up.

Sold as one set of 4 (ST); outfits two calipers.

Tech Tip: You can fine tune your car's brake system by selecting different compounds for the front and rear, or side to side.

Tech Tip:  Only use full metallic pads on coated rotors.

Brake Pad Brand Guide (Link) 

Learn how to properly Bed-In your brake pads by reading our tech article.  Bedding-In Brake Pad Procedure.

Speedway 1949-54 Chevy Car Modified Spindles Only
SKU-91632100
                        

Speedway has produced these new forged steel reproduction car spindles. They have many features not available with GMs' original design! These spindles are the choice of professional builders because of their clean look, strength and ease of installation.

  • Made to direct mount Mustang II hubs and rotors plus many other later GM's
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Spindle Identification Guide (GIF)

1978-Up GM Metric Brake Calipers, IMCA Approved
SKU-91031045
                        

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

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SKU-91031956
                        

An economical, lightweight brake kit for 1949-54 Chevy car spindles. Your stock Chevy spindles must be machined, or use Speedway '49-'54 Chevy-style spindles. This kit uses 9-1/4" Mustang II vented rotors with common GM metric calipers.

  • Typically used on Model T and Model A to 1936 Ford front ends 
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  • Will not work with stock 1949-54 steering arms 
  • Not to be installed on stock 1949-54 Chevy vehicle front ends

910-31956 Instructions (PDF)

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SKU-83512011872BK
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Lubrication Engineers 3752 LE Almagard Industrial Grease, 14.5 Oz
SKU-4983752
                        

Multifunctional grease designed for exceptional mechanical stability, excellent extreme pressure and high temperature capabilities. Won't wash off, pound out, or melt and run, even with extended service in severe conditions.

  • Use in all types of vehicles, on and off road, as well as in many in-plant applications
  • Very tacky
  • Excellent water resistance
  • Will not pound out
  • Rust and corrosion inhibited
  • Extremely versatile
  • Excellent oxidation resistance and rust protection
  • Great oxidation stability and longer life, does not "work down" in service
  • High dropping point
  • Good heat reversion
  • Does not harden on aging, easily pushed out by fresh grease
  • Timken OK load of 70 lbs
  • Bearing life may be extended up to three times with cooler operation
  • Reduces downtime and maintenance labor because of smooth, cool performance
  • Works great for chassis, wheel bearings, U-joints

LE Almagard Data Sheet (PDF)