1958-64 Chevy Full-size Car Brake Booster Combo, Disc/Drum
1958-64 Chevy Full-size Car Brake Booster Combo, Disc/Drum
Speedway Motors

|

#91035864

1958-64 Chevy Full-size Car Brake Booster Combo, Disc/Drum

  • 1" bore master cylinder
  • 1/2"-20 and 9/16"-18 outlets
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$267.99

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Product Summary

58-64 Chevy, Disc/Drum Brake System Type

  • 1" bore master cylinder
  • 1/2"-20 and 9/16"-18 outlets
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Key Specs

MFG. Part #91035864
BrandSpeedway Motors
Brake System TypeDisc/Drum
Brake Booster Diameter8 Inch
Master Cylinder MaterialSteel
See more specs

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Speedway Motors 91035864 Details

When you put modern disc brakes on the front of your 1958-1964 Chevy full-size car (Bel-Air, Biscayne, Impala), you should update the master cylinder as well. Stock 4-wheel drum master cylinders do not have the capacity to supply the proper amount of pressure for front disc brakes. For best results, we recommend using this simple, bolt-on master cylinder booster kit on all front disc brake conversions.

  • 8" dual diaphragm booster
  • 1" bore master cylinder
  • GM style proportioning/metering combination valve
  • Master cylinder has outlets on both sides for ease of plumbing
  • Includes plugs for unused outlets on opposite side of master cylinder

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection.

Specs

  • Outlet Fittings:  1/2"-20 and 9/16"-18
  • Proportioning valve comes with 1/8” NPT to 3/8"-24 IFF adapter fittings

Speedway Motors 91035864 Specifications

KEY SPECS
MFG. Part #91035864
BrandSpeedway Motors
Brake System TypeDisc/Drum
Brake Booster Diameter8 Inch
Master Cylinder MaterialSteel
GENERAL
Brake Booster TypeVacuum Diaphragm Dual
Outlet CountTandem/Both Sides
Master Cylinder Bore Size1 Inch
Brake Booster MaterialSteel
Mounted Length13.25"
Master Cylinder Port Sizes1/2"-20 & 9/16"-18 IFF
Bolt Hole Pattern3.38" x 3.38"
Centerline of Holes3.38"
Reservoir IncludedYes
Sold in QuantityKit

Ratings & Reviews

4.5

8 Reviews

Overall Assessment

Customers positively rate the product for its excellent performance and great fit, especially suitable for a 64 Impala. They appreciate its usability, citing its easy installation process, and consider it a worthwhile safety upgrade in comparison to other systems. However, a negative review warned about a poor fit and leaking for a 1959 Bel Air. Despite this, the overall quality, practicality, and improved safety of the product have led to customer satisfaction and repeated business.

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4.5

8 reviews

5

7

4

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2

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Filter by Ratings

Brake booster

5.0

2 years ago

Lloyd

Md

Verified

Ok

Would Recommend

yes

5.0

3 years ago

f.c.

easton md.

Verified

works great

Would Recommend

I'm sure I would

5.0

3 years ago

Dj

Hartsville

Verified

Have not had a chance to install it yet.

Would Recommend

Great kit great price!

5.0

8 years ago

Joe

Fresno Ca.

Verified

The kit bolted on easy to a 64 impala

Would Recommend

Not a good fit

1.0

8 years ago

Disappointed

Portland, Oregon

Verified

For those looking to order this. Be warned that this product is not a good for for a 1959 Bel Air. The threaded rod is about 1" short and the proportioning Valve is leaking out the front. Not where the brake lines connect.

Would Not Recommend

Great product

5.0

9 years ago

Bobito

Tucson, Arizona

Verified

Great fit

Would Recommend

Just what the Doctor ordered to safely stop my 64 Impala

5.0

9 years ago

Randy the Wrench

Columbia Pa.

Verified

This is a great safety item. My Impala was not safe for my girlfriend to drive. The disc brake system is great!

Would Recommend

great

5.0

12 years ago

Ronde

Wichita Falls, TX, USA

Verified

Easy to instill. Thank y'all guy and lady's for the help and great product.hope we can do more business together again.

Would Recommend

Showing 8 of 8 reviews

Questions & Answers

10 Questions • 11 Answers

Will this kit fit on 62 chevy impala that has power brakes on the car now

by Edward

• 7 years ago

1 answer

View Answer

what type of warranty comes with this kit?

by Jeff

• 8 years ago

2 answers

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I purchased this kit from speedway and it did not come with any instructions. I need the plumbing instructions for the master cylinder and for the proportioning valve. The mounting was self explanatory. Does the front or rear reservoir go to the front discs or rear drums? Which outlet on the proportioning valve goes where? Can you send me instructions? Thank You

by Mud

• 11 years ago

1 answer

View Answer

Im installing this unit on a 1960 chevy impala with your disc brake kit up front and stock drums out back, does the proportioning valve that comes in this kit have a built in 10lbs residual valve for the rear drum brakes? the master cylinder is a basically a copy of a early 70s corvette which had 4 wheel disc brakes, the 4 wheel disc brake master cylinder did not have a residual built in. from my understanding a 10lbs residual valve is needed for the rear drums to function properly.

by titus

• 11 years ago

1 answer

View Answer

Will this kit fit a 58 impala with 454

by Jackhorsey

• 11 years ago

1 answer

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Can this kit be purchased with a dual 7" diaphragm booster instead of a dual 8"? 1964 Impala with an LS swap. 8" diaphragms interfere with the rear coil pack.

by JeffDonovan08

• 11 years ago

1 answer

View Answer

my proportioning valve is like the 58-64 type rather than the 55-57 model belair. did you sernd me the wrong one, or will it work?

by 57law

• 12 years ago

1 answer

View Answer

Will this kit also fit a drum/drum car and be able to use the proportioning valve?

by Bobbyr

• 12 years ago

1 answer

View Answer

1948 chevy coupe my 1948 chevy coupe has a 1973 nova front clip so the car has disc brakes will this master cylinder kit work with a stock nova system.

by 1948chevy

• 13 years ago

1 answer

View Answer

Attachment of booster to pedal assembly In the pictures and description it appears that the new booster mounts to the firewall and a longer pushrod is used to the stock manual brake pedal. I noticed that you also offer PN 91031982 that adds a mechanical advantage to the booster bracket. Which of these options is a better choice when valve cover clearance isn't an issue? It also seems as if this kit angles the booster and master up instead of keeping them perpendicular to the firewall. Am I correct in that assumption? Thanks, Andrew Vehicle: 1962 Impala w/ stock manual drum/drum being converted with your disc front kit PN 91031911

by lowrollin70gmc

• 13 years ago

1 answer

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