Product Summary

3.63" Overall Length, 3.38" x 3.38" Bolt Hole Pattern

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    Key Specs

    MFG. Part #91031988
    BrandSpeedway Motors
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    Need To Know

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    Speedway Motors 91031988 Details

    It is designed to convert a manual brake / manual transmission Mustang to power brakes. It is NOT an OEM replacement bracket. It accepts our 7” booster and 1” master cylinder combo number 91031409. The booster mount pattern is 3-3/8” center to center both vertically and horizontally in a 4 bolt square pattern.

    • Designed to convert a manual brake Mustang to power brakes
    • Applicable to a manual transmission Mustang only
    • Will (not) work with an automatic transmission equipped Mustang
    • Accepts our 7” booster and 1” master cylinder combo: number 91031409
    • Mount pattern: 3-3/8” center to center
    • 4 bolt square pattern

    Speedway Motors 91031988 Specifications

    KEY SPECS
    MFG. Part #91031988
    BrandSpeedway Motors
    GENERAL
    Overall Length3.63"
    Bolt Hole Pattern3.38" x 3.38"
    Material Thickness0.12"
    Material TypeSteel
    FinishPowder Coated
    ColorBlack
    Sold in QuantityEach
    NotesIncludes shim.

    Ratings & Reviews

    3.5

    4 Reviews

    Overall Assessment

    Customers consistently recommend our product, praising its high-quality material and usability. Our product satisfies their needs, significantly standing out for its excellent quality and affordable price. A repeated preference is based on guaranteed suitability for projects, even those of a vintage nature like a '64 1/2 Mustang. A point for improvement pointed out by customers is the need for instructions, reaffirming its practical features and cementing our product's place as superior and reliable in its category.

    3.5

    4 reviews

    5

    1

    4

    2

    3

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    2

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    1

    1

    Filter by Ratings

    Didn't work as described

    1.0

    8 months ago

    Stashy

    Bucks County PA

    Verified

    The master cylinder combined with the booster still hit the Z bar for my clutch, this is not intended for a 1965 Ford Mustang with manual transmission, and you don't need it if it is an automatic transmission.

    Would Not Recommend

    Very nice part

    4.0

    4 years ago

    Perc

    Wilmington NC

    Verified

    I would buy this part again for my next project

    Would Recommend

    Yes

    4.0

    6 years ago

    Allen

    Indianapolis

    Verified

    No instructions were sent with parts

    Would Recommend

    Great Part at a Great Price!!

    5.0

    6 years ago

    Ron

    Chattanooga, Tennessee

    Verified

    Just what I needed for my 64 1/2 Mustang. Great Part, Great fit, Great price!!

    Would Recommend

    Showing 4 of 4 reviews

    Questions & Answers

    7 Questions • 7 Answers

    What is the bolt pattern hole measurements for the firewall side mounting holes ?

    by Craig

    • 9 years ago

    1 answer

    I have a 66 Mustang, that was originally a straight 6 with a manual transmission. I now have a 289 with a C4 automatic transmission in it. It still however has the 3 pedals. Should I be using this bracket, or part number 9106466?

    by Drew

    • 9 years ago

    1 answer

    Will this product also work on a 1965 Ford Falcon with Manual Trans?

    by Mark

    • 9 years ago

    1 answer

    Will this bracket, and the associated booster & master cylinder included with part #91031409, fit under Ford's "Export Brace" (the V-shaped, one-piece brace -- not the individual shock tower-to-cowl braces)?

    by SgtBAXMAN

    • 10 years ago

    1 answer

    Will this adapter work with a manual transmission car or only an automatic

    by Corey1

    • 12 years ago

    1 answer

    Does this bracket work with the oem factory power brake booster?

    by

    • 14 years ago

    1 answer

    hi there does this bracket fit a 64 fairlane that will have a 7' booster and twin circuit master cylinder cheers nick

    by boozie

    • 15 years ago

    1 answer

    7 of 7 questions shown

    Fitment

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