Product Summary

Buick, Chevy, Oldsmobile, Pontiac, Tandem Outlet Count

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    Key Specs

    MFG. Part #91664221
    Brake System TypeDisc
    Brake Booster Diameter11 Inch
    Master Cylinder MaterialCast Iron
    Master Cylinder FinishNatural
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    Need To Know

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    Speedway Motors 91664221 Details

    Easily convert your manual braking system on your 1967-1972 GM A/F/X Body and add some power with little to no modificatoins! Unit comes complete with brake booster, master cylinder, and booster bracket. Detailed instructions included for a seamless install.

    • 1967-1972 GM A/F/X Body 
    • 11" stamped brake booster conversion kit 
    • Stamped master cylinder 
    • Disc/Disc 
    • 1-1/8" bore 

    Kit Includes:

    • OE Style Master Cylinder with Bleeder Screws
    • Casting #'s
    • 11" Delco Moraine Stamped Power Brake Booster
    • Disc/Disc Proportioning Valve

    Application

    1967 Chevy Chevelle
    1967 Chevy El Camino
    1967 Buick Special
    1967 Buick Skylark
    1967 Pontiac Tempest
    1967 Pontiac Lemans
    1967 Pontiac GTO
    1967 Oldsmobile F-85
    1967 Oldsmobile Cutlass
    1967 Oldsmobile 442
    1967 Oldsmobile Vista Cruiser
    1968 Chevy Chevelle
    1968 Chevy El Camino
    1968 Chevy Camaro
    1968 Chevy Nova
    1968 Buick Special
    1968 Buick Skylark
    1968 Pontiac Tempest
    1968 Pontiac Lemans
    1968 Pontiac GTO
    1968 Oldsmobile F-85
    1968 Oldsmobile Cutlass
    1968 Oldsmobile 442
    1968 Oldsmobile Vista Cruiser
    1969 Chevy Chevelle
    1969 Chevy El Camino
    1969 Chevy Camaro
    1969 Chevy Nova
    1969 Buick Special
    1969 Buick Skylark
    1969 Pontiac Tempest
    1969 Pontiac Lemans
    1969 Pontiac GTO
    1969 Oldsmobile F-85
    1969 Oldsmobile Cutlass
    1969 Oldsmobile 442
    1969 Oldsmobile Vista Cruiser
    1970 Chevy Chevelle
    1970 Chevy El Camino
    1970 Chevy Nova
    1970 Buick Special
    1970 Buick Skylark
    1970 Pontiac Tempest
    1970 Pontiac Lemans
    1970 Pontiac GTO
    1970 Oldsmobile F-85
    1970 Oldsmobile Cutlass
    1970 Oldsmobile 442
    1970 Oldsmobile Vista Cruiser
    1971 Chevy Chevelle
    1971 Chevy El Camino
    1971 Chevy Nova
    1971 Buick Special
    1971 Buick Skylark
    1971 Pontiac Tempest
    1971 Pontiac Lemans
    1971 Pontiac GTO
    1971 Oldsmobile F-85
    1971 Oldsmobile Cutlass
    1971 Oldsmobile 442
    1971 Oldsmobile Vista Cruiser
    1972 Chevy Chevelle
    1972 Chevy El Camino
    1972 Chevy Nova
    1972 Buick Special
    1972 Buick Skylark
    1972 Pontiac Tempest
    1972 Pontiac Lemans
    1972 Pontiac GTO
    1972 Oldsmobile F-85
    1972 Oldsmobile Cutlass
    1972 Oldsmobile 442
    1972 Oldsmobile Vista Cruiser

    Speedway Motors 91664221 Specifications

    KEY SPECS
    MFG. Part #91664221
    BrandSpeedway Motors
    Brake System TypeDisc
    Brake Booster Diameter11 Inch
    Master Cylinder MaterialCast Iron
    Master Cylinder FinishNatural
    GENERAL
    Brake Booster TypeVacuum Diaphragm Single
    Outlet CountTandem
    Master Cylinder Bore Size1-1/8 Inch
    Brake Booster MaterialSteel
    Brake Booster FinishZinc
    Master Cylinder Port Sizes1/2"-20 & 9/16"-18 IFF
    Master Cylinder Built-In Residual ValvesNo
    Master Cylinder Bail TypeDouble Bail Wire Zinc Lid
    Mounting Bracket IncludedYes
    Brake Booster Bracket FinishZinc
    Proportioning Valve MaterialBrass
    Proportioning Valve LocationLeft Mount
    Brake Pedal Rod IncludedNo
    Reservoir IncludedYes
    Sold in QuantityKit
    NotesDisc/ Drum applications direct bolt on. No modifications to firewall are needed. Delco Moraine Stamp GM Restoration Part.

    Ratings & Reviews

    5

    1 Review

    5

    1 reviews

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    Great fit

    5.0

    5 years ago

    Bill

    Omaha Nebraska

    Verified

    OE replacement fit perfectly.

    Would Recommend

    Showing 1 of 1 reviews

    Questions & Answers

    1 Question • 1 Answer

    Part #: 91664221 The title Says Disc/Disc but the details say Disc/Drum. Can you clarify this? I am looking for Disc/Drum 1.125" Master cylinder/11" Booster with a combination valve to fit Stock 69 camaro/427 ci.

    by Jim

    • 7 years ago

    1 answer

    1 of 1 questions shown

    Fitment

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