Product Summary

Buick, Chevy, Oldsmobile, Pontiac, Tandem Outlet Count

  • GM Style 9 Inch Dual Black Coated Power Brake Booster
  • Black powder coated angled booster bracket
  • Black polished aluminum oval flat top, tandem master cylinder (compare to Wilwood Master Cylinder 260-8555-BK)
  • Lightweight aluminum black disc drum proportioning valve
  • Stainless steel lines valve to master cylinder
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Key Specs

MFG. Part #91664075
Brake System TypeDisc/Drum
Brake Booster Diameter9 Inch
Master Cylinder MaterialAluminum
Master Cylinder FinishPowder Coated Black
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Need To Know

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Speedway Motors 91664075 Details

Like the Wilwood look but don't want to drop the big money? This kit will have the oval style black master cylinder you are looking for with out the high price tag. Couple that with the powerful 9" dual power brake booster & you'll be stopping on a dime and looking great too!

9" Dual Power Conversion w/ Wilwood Style Oval Master Cylinder Kit for GM 1964-1972 GM A Body Cars (Disc/ Drum)

  • GM Style 9" Dual Black Coated Power Brake Booster
  • Black Powder Coated Angled Booster Bracket
  • Black Polished Aluminum Oval Flat Top, Tandem Master Cylinder (compare to Wilwood Master Cylinder 260-8555-BK)
  • Light Weight Aluminum Black Disc Drum Proportioning Valve
  • Stainless Steel Lines Valve to Master Cylinder
  • Matching Black Powder Coated Left Mount Proportioning Valve Bracket
  • Booster Pedal rod extension
  • Pedal Rod Clevis

Charts

Speedway Motors 91664075 Specifications

KEY SPECS
MFG. Part #91664075
BrandSpeedway Motors
Brake System TypeDisc/Drum
Brake Booster Diameter9 Inch
Master Cylinder MaterialAluminum
Master Cylinder FinishPowder Coated Black
GENERAL
Brake Booster TypeVacuum Diaphragm Dual
Outlet CountTandem
Master Cylinder Bore Size1 Inch
Master Cylinder Port Sizes1/2"-20 & 9/16"-18 IFF
Proportioning Valve IncludedYes
Proportioning Valve MaterialAluminum
Brake Pedal Rod IncludedYes
Reservoir IncludedYes
Sold in QuantityKit

Ratings & Reviews

4.5

2 Reviews

Overall Assessment

Customers appreciate the product for its aesthetic appeal, effective integration within restoration projects, and perceived quality. Despite indications that additional parts may be needed, the kit is considered good value for the price. The presence of power brakes distinguishes it amid other brake systems, often deemed either visually unappealing or lacking this feature. While durability and practical usage must be further assessed, the product already emerges as an advantageous selection - an ideal blend of cost-efficiency and functionality.

4.5

2 reviews

5

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4

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Perfect for a restomod with vacuum assist

5.0

a month ago

GarageMahal

Draper, UT

Verified

I looked at a handful of options for brakes on my 1968 Camaro restomod project. Most of the brake systems are either ugly or minimalistic (no power brakes). And most of them are stoooopid expensive. This is the perfect compromise, in my opinion. I can't speak to quality, longevity, or practical usage yet, cause I've only just installed it. No miles on the build yet.

Would Recommend

Nice kit for the price…

4.0

3 years ago

Mike

Oklahoma

This kit has good looks and will appears to be good quality pieces but it will not work with stock disc/drum brakes as stated. It requires purchase of new disc brake conversion lines to fit. You could also modify existing lines/fittings to work but I decided to replace the 50+ year old lines instead.

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

2 Questions • 2 Answers

Is there a front brake line kit for this kit?

by Josh

• 8 years ago

1 answer

Will this fit a 87 Monte Carlo ss?

by Dave

• 8 years ago

1 answer

2 of 2 questions shown

Fitment

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