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Product Summary

Front Position, 11 Inch Rotor Diameter, Powder Coated

  • 11" Drilled and Slotted Rotors
  • Large Single Bore GM Calipers w/ Pads
  • 1" Bore Dual Bail Cast Iron Master Cylinder
  • 8" Dual Zinc Booster w/ Firewall Brackets

Comes as a Kit

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Key Specs

MFG. Part #91664003
PositionFront
Rotor Diameter11 Inch
Rotor TypeVented
Caliper PistonsOne
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91664003 Details

Our all-inclusive disc brake conversion kit makes it easy for the budget minded hot rod enthusiast to convert their drum brakes to disc brakes. The GM full size kits won't require you to swap out spindles, saving you time and money. The included power brake conversion gives you full braking power. 

Full Size Chevy 1955-58 Complete Stock Height Disc Brake Kit Includes

  • 11" Rotors
  • Large Single Bore GM Calipers w/ Pads
  • Caliper Brackets
  • Hoses with Banjo Bolts
  • Bearings
  • Seals
  • Dust Caps
  • Spindle Nuts
  • Spindle Washers
  • All Hardware

1955-1958 GM Full Size 8" Dual Zinc Booster Conversion Kit (Impala, Bel Air, Biscayne)

Includes:

  • 1" Bore Dual Bail Cast Iron Master Cylinder
  • Brass Proportioning Valve Kit for Left Mount
  • 8" Dual Zinc Booster w/ Firewall Brackets
  • Pedal Extension & Clevis

Charts

Speedway Motors 91664003 Specifications

KEY SPECS
MFG. Part #91664003
BrandSpeedway Motors
PositionFront
Rotor Diameter11 Inch
Rotor TypeVented
Caliper PistonsOne
Caliper FinishPowder Coated
ColorBlack
Parking Brake ProvisionNo
Minimum Recommended Wheel Diameter15 Inch
Rotor ShapeRound
Hardware IncludedYes
Rotor StyleDrilled & Slotted
Front Rotor IncludedYes
Front Rotor Diameter11 Inch
Front Caliper IncludedYes
Rear Caliper IncludedNo
Front Spindles IncludedNo
Master Cylinder IncludedYes
Brake Booster IncludedYes
Brake Hoses IncludedYes
Rear Rotor IncludedNo
Bolt Pattern5 on 4.75"
Mounting Bracket IncludedYes
Application TypeDisc/Drum
Front Caliper Piston Quantity1
Front Caliper FinishPowder Coated
GENERAL
Rotor Thickness1"
Front Caliper MaterialCast Iron
Front Caliper PistonSingle Large Piston
Brake Booster Diameter8 Inch
Brake Booster MaterialSteel
Brake Booster TypeVacuum Diaphragm Dual
Brake Hose MaterialRubber
Master Cylinder Bail TypeDual Bail
Master Cylinder Bore Size1 Inch
Master Cylinder FinishNatural
Master Cylinder MaterialCast Iron
Master Cylinder Port Sizes9/16-18" & 1/2-20"
Proportioning Valve LocationLeft Mount
Brake Booster Bracket FinishZinc
Brake Booster FinishZinc
Brake Pedal Rod IncludedYes

Ratings & Reviews

5

2 Reviews

Overall Assessment

Customers consistently praise the product for its quality and practicality. They are eager to utilize the product, particularly noting its potential improvement over previous models. The switch from old drum systems to these newer front discs on vehicles like a 55 Chevy is highly anticipated, with customers expressing their intent to repurchase based on the expected superior performance. Customers particularly highlight the product's confirmed qualities and practical usability, setting it apart from its competitors.

5

2 reviews

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Nice Product / Kit

5.0

2 years ago

Bill

Martinez, GA

Verified

See above

Would Recommend

I would buy this product again.

5.0

2 years ago

Esteban

New Mexico

Verified

Can't wait to see how much better these front discs are VS the old drums on my 55 Chev.

Would Recommend

Showing 2 of 2 reviews

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