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

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

Bel Air, Biscayne, Del Ray, Impala, Brookwood, Sedan Delivery, Kingswood, Parkwood

12 Reviews | 15 Answered Questions
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1958-64 Chevy Full-size Car Brake Booster Combo, Disc/Disc, Drum/Drum
1958-64 Chevy Full-size Car Brake Booster Combo, Disc/Disc, Drum/Drum
1958-64 Chevy Full-size Car Brake Booster Combo, Disc/Disc, Drum/Drum
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1958-64 Chevy Full-size Car Brake Booster Combo, Disc/Disc, Drum/Drum
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Part # 91031974
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  • This brake booster combo is specifically designed for the 1958-64 Chevy Full-size Car
  • Features an 8" dual diaphragm booster and a 1" bore master cylinder
  • Has an adjustable proportioning valve for rear brake line
  • The master cylinder has outlets on both sides for ease of plumbing
  • Proportioning valve comes with 1/8” NPT to 3/8"-24 IFF adapter fittings

Details

Garage Sale Type:
Discontinued
Brake System Type:
Disc/Drum
Brake Booster Diameter:
8 Inch
Outlet Fitting:
Front: 1/2"-20, Rear: 9/16"-18
Master Cylinder Bore Size:
1 Inch
MFG. Part #:
91031974
Mounted Length:
14.25"
Master Cylinder Port Sizes:
9/16-18 & 1/2-20
Proportioning Valve Included:
Yes
Sold in Quantity:
Kit
Notes:
Proportioning valve comes with 1/8” NPT to 3/8"-24 IFF adapter fittings.

Info

Garage Sale Product

This is garage sale priced because we are liquidating inventory.

No Warranty, No Returns on Garage Sale Items    

 This kit works with Disc/Disc, and Drum/Drum combinations.

When you put modern disc brakes on your 1958-1964 Chevy full-size car (Bel-Air, Biscayne, Impala, 150 Series, 210 Series), 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 disc brakes. For best results, we recommend using this simple, bolt-on master cylinder booster kit on all 4-wheel disc brake conversions or as a power brake upgrade for 4-wheel drum brake applications.

  • 8" dual diaphragm booster
  • 1" bore master cylinder
  • Adjustable proportioning valve for rear brake line
  • Master cylinder has outlets on both sides for ease of plumbing
  • 1/2"-20 and 9/16"-18 outlets

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

Installation Tips

  1. Will not fit cars equipped with the original generator-mounted power steering pump.
  2. Front drum-to-disc brake conversions also require a proportioning valve to be installed in the rear brake line circuit. The proportioning valve modulates pressure to the rear brakes which is necessary to prevent the rear brakes from locking up in an emergency stop situation. This kit incudes an adjustable proportioning valve to allow for a proper installation of front disc brakes.

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

Reviews

Q & A

Videos & Articles
  • Jeff converts his 1967 Chevelle manual brake system to power by installing a Delco booster kit. Learn how to make the master cylinder more resistant to brake fluid and a few tips for an easy install.
  • How to change brake pads, rotors and calipers using the Mustang II complete brake kit. Replace your drum brakes with disc brakes for performance and better braking ride. For use on Bobcat and Mustang II spindles.
  • Just about any classic vehicle’s drum brakes can be upgraded to the increased braking performance of a disc brake system. Our Buyer’s Guide provides an overview of disc brake benefits and what you need to succeed with your upgrade.

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