Product Summary

Front Position, 5 on 4.75" Bolt Pattern, Powder Coated

    Comes as a Kit

    Key Specs

    Bolt Pattern5 on 4.75"
    Rotor Diameter11 Inch
    Rotor TypeVented
    Caliper PistonsOne

    Need To Know

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    Return Policy

    Speedway Motors 91664005 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. Want power brakes? Add a power brake conversion and have full braking power. Booster conversion kits come in many finishes and sizes and can be configured to any kit.

    Full Size Chevy 1955-58 Complete Stock Height Kit Includes

    • 11" Rotors
    • Loaded Large GM Calipers
    • Caliper Brackets
    • Hoses with Banjo Bolts
    • Vacuum Hose with Intake Manifold Fittings
    • Bearings
    • Seals
    • Dust Caps
    • Spindle Nuts
    • Spindle Washers
    • All Hardware

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

    • 1" Bore Aluminum Chrome Flat Top Master Cylinder
    • Proportioning Valve Kit for Left Mount
    • 8" Dual Booster w/ Firewall Brackets
    • Pedal Extension & Clevis


    Speedway Motors 91664005 Specifications

    MFG. Part #91664005
    BrandSpeedway Motors
    Bolt Pattern5 on 4.75"
    Rotor Diameter11 Inch
    Rotor TypeVented
    Caliper PistonsOne
    Caliper FinishPowder Coated
    Parking Brake ProvisionNo
    Minimum Recommended Wheel Diameter15 Inch
    Rotor StyleDrilled & Slotted
    Front Rotor IncludedYes
    Front Rotor Diameter11 Inch
    Front Caliper IncludedYes
    Front Caliper Piston Quantity1
    Front Caliper FinishPowder Coated
    Rear Caliper IncludedNo
    Front Spindles IncludedNo
    Master Cylinder IncludedYes
    Brake Booster IncludedYes
    Brake Hoses IncludedYes
    Rear Rotor IncludedNo
    Rotor Thickness1"
    Front Caliper MaterialCast Iron
    Front Caliper PistonSingle Large Piston
    Application TypeDisc/Drum
    Brake Booster Diameter8 Inch
    Brake Booster FinishChrome
    Brake Booster MaterialSteel
    Brake Booster TypeVacuum Diaphragm Dual
    Brake Hose MaterialRubber
    Master Cylinder Bail TypeFlat Top
    Master Cylinder Bore Size1 Inch
    Master Cylinder FinishChrome
    Master Cylinder MaterialAluminum
    Master Cylinder Port Sizes9/16-18" & 1/2-20"
    Mounting Bracket IncludedYes
    Brake Pedal Rod IncludedYes
    Proportioning Valve LocationLeft Mount
    Brake Booster Bracket FinishChrome