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Product Summary

55-57 Chevy, Disc/Drum Brake System Type, Natural, Zinc

  • Kit contains a 1" bore master cylinder with 1/2"-20 and 9/16"-18 outlets, 7" dual diaphragm booster, and a disc/drum combination valve
  • Includes proportioning/metering valve with bracket to bolt directly to master cylinder
  • Also includes line to connect the prop/metering block to the master cylinder
  • Upgrades the brake system on your Tri-5 Chevy car to match upgraded disc brakes
  • Compact 7" brake booster for additional clearance for larger valve covers

Comes as a Kit

Key Specs

MFG. Part #91604105
Brake System TypeDisc/Drum
Brake Booster Diameter7 Inch
Master Cylinder MaterialSteel
Master Cylinder FinishNatural

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Details

When you put modern front disc brakes on your 55-57 Chevy car, you should update the master cylinder as well. The stock 55-57 drum brake master cylinder does not have the capacity to supply the proper amount of pressure for front disc brakes. This simple bolt-on power brake assembly will ensure your brakes are operating at peak performance.

  • Kit contains a 1" bore master cylinder with 1/2"-20 and 9/16"-18 outlets, 7" dual diaphragm booster, and a disc/drum combination valve (provides proportioning and metering).
  • Measures 14-1/4" from firewall bracket to end of master cylinder.
  • Includes proportioning/metering valve

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

Charts

Specifications

KEY SPECS
MFG. Part #91604105
BrandSpeedway Motors
Brake System TypeDisc/Drum
Brake Booster Diameter7 Inch
Master Cylinder MaterialSteel
Master Cylinder FinishNatural
GENERAL
Brake Booster TypeVacuum Diaphragm Dual
PositionFirewall/Frame
Outlet CountTandem/Both Sides
Outlet Fitting3/8"-24
Master Cylinder Bore Size1 Inch
Brake Booster MaterialSteel
Brake Booster FinishZinc
Mounted Length14.25"
Master Cylinder Port Sizes3/8"-24 IFF
Master Cylinder Cap IncludedYes
Master Cylinder Bail TypeDouble Bail Wire Zinc Lid
Mounting Bracket IncludedYes
Brake Booster Bracket FinishZinc
Centerline of Holes3.375"
Proportioning Valve IncludedYes
Proportioning Valve MaterialBrass
Proportioning Valve LocationLeft Mount
Brake Pedal Rod IncludedYes
Sold in QuantityKit