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1964-1972 GM A, F, X Wilwood 8" Dual Chrome Booster Conversion Kit

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Product Description


Wilwood Chrome 8" Dual Power Brake Assembly
Featuring a Wilwood Tandem Aluminum Master Cylinder & Disc Drum proportioning Valve

Next time you pop the hood of your car at the weekend cruisin, you can be proud showing off a truly classy and sophisticated power brake booster design with a name that can back it up. Our Wilwood Chrome Power Brake Assembly is unique, and definitely show quality.


  •     GM Style 8" Dual  Chrome Power Brake Booster
  •     Stainless Steel Booster Brackets
  •     260-8555- P Polished Aluminum Wilwood Master Cylinder
  •     Chrome Disc/Drum valve, bracket, lines & 
  •     Stainless Steel Lines Valve to Master Cylinder
  •     Booster Pedal rod extension
  •     Booster Clevis


260-8555-P Wilwood - 1 " Bore High Volume Tandem Master Cylinder


1 " Bore High Volume Tandem Master Cylinder by Wilwood®. Color: Polished Aluminum. In Wilwood have all the necessary accessories and replacement parts to keep your brake system working like clockwork. The 1” bore is designed for use primarily with power brake applications, either from vacuum assist or hydraulic assist systems. They’re designed for mount flanges from 3.22” to 3.40”, common measurements for most domestic cars and trucks from the mid 1960s to present, and offer fluid outlet ports on both sides of the bore. The stroke is set at 1.10” with a volume ratio of 2:1 between the primary and secondary chambers. Machined from high-pressure die castings, each master cylinder weighs only 3lbs, a 75% weight savings over most cast iron OE type master cylinders.

  •     1" Polished Aluminum Master Cylinder


260-11179 Wilwood - Adjustable Proportioning Valve

Wilwood’s new Combination Proportioning Valve substantially simplifies mounting, plumbing, wiring and brake proportioning adjustments on vehicles with custom brake systems. The combination block maintains full isolation between front and rear fluid circuits and can be used in conjunction with any tandem outlet or dual mount master cylinder assemblies. The rear circuit has a single inlet and single outlet with the adjustable proportioning valve. The front circuit has a single inlet with two outlets. It can be run as a single outlet with one outlet plugged, or used to split the plumbing on its way to the front calipers.  

This product will fit the following GM, A, F, X Body Cars:

1964-1972 A-BODY: Chevy Chevelle, Chevy El Camino, Chevy Monte Carlo, Oldsmobile Vista Cruiser, Oldsmobile Cutlass, Oldsmobile 442, Oldsmobile F-85, Pontiac Tempest, Pontiac LeMans, Pontiac GTO, Buick Special, Buick Skylark.

1967-1969 F-BODY : Chevy Camaro, Pontiac Firebird

1968-1974 X-BODY: Chevy Nova




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