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#91664048
Speedway 1964-1966 Ford Mustang Booster Conv. Kit (Disc/ Disc)
- 7" Single black Mustang booster w/ firewall plate
- 1" Bore master cylinder, 1/2-20" & 3/8-24" ports on left side only
- Includes pre-bent lines to master cylinder
$351.99
/kit
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Garage Sale alternatives: from $185.46
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Product Summary
64-66 Ford Mustang, Disc/Disc Brake System Type
- 7" Single black Mustang booster w/ firewall plate
- 1" Bore master cylinder, 1/2-20" & 3/8-24" ports on left side only
- Includes pre-bent lines to master cylinder
- Built in residual valve for rear brakes
- Mounting hardware included
Key Specs
| MFG. Part # | 91664048 |
| Brand | Speedway Motors |
| Brake System Type | Disc/Disc |
| Brake Booster Diameter | 7 Inch |
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Speedway Motors 91664048 Details
This is one of our best selling power brake units for your early Mustang. Want to add power brakes but fear it will hit the shock towers? Not this unit! Sure to slip right in and clear under the hood and get the stopping power you deserve. Retain the OEM look and add power brakes to your Mustang today!
1964-1966 Ford Mustang Booster Conversion Kit (Disc/ Disc)
Conversion Kit Includes
- 7" Single Black Mustang Booster w/ Firewall Plate
- 1" Bore Master Cylinder
- 2227161 Casting Number with Teardrop Markings
- 1/2-20" & 3/8-24" Ports on left Side only
- Bottom Mount Universal Disc/Disc Proportioning Valve Kit
- Includes Pre-bent Lines to Master Cylinder
- Built in Residual Valve for Rear Brakes
- Zinc Bottom Mount Bracket
- Mounting Hardware
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Guides & Documents
Speedway Motors 91664048 Specifications
Speedway Motors 91664048 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91664048 |
| Brand | Speedway Motors |
| Brake System Type | Disc/Disc |
| Brake Booster Diameter | 7 Inch |
| GENERAL | |
| Brake Booster Type | Vacuum Diaphragm Single |
| Outlet Count | Tandem |
| Outlet Fitting | 1/2"-20 & 3/8"-24 |
| Master Cylinder Bore Size | 1 Inch |
| Master Cylinder Port Sizes | 3/8"-24 & 1/2"-20 IFF |
| Master Cylinder Built-In Residual Valves | Yes |
| Master Cylinder Bail Type | Single Bail |
| Mounting Bracket Included | Yes |
| Proportioning Valve Included | Yes |
| Proportioning Valve Location | Bottom Mount |
| Reservoir Included | Yes |
| Sold in Quantity | Kit |
Ratings & Reviews
4
3 Reviews
Customers appreciate the product's easy installation, especially notable since some aren't professional mechanics but hobbyists. It fits well in a Mustang of old vintage, and even comes with adjustable features like the booster pushrod, though some adjustments may be necessary for optimal performance. Quality of materials is demonstrated through the product's reuse of existing holes and replaceable brake lines. While it may initially be a bit time-consuming and complex, ultimate engagement is assured with the appropriate tools. Customers recommend the product for its practicality and usability.
Ratings & Reviews
4
3 Reviews
Customers appreciate the product's easy installation, especially notable since some aren't professional mechanics but hobbyists. It fits well in a Mustang of old vintage, and even comes with adjustable features like the booster pushrod, though some adjustments may be necessary for optimal performance. Quality of materials is demonstrated through the product's reuse of existing holes and replaceable brake lines. While it may initially be a bit time-consuming and complex, ultimate engagement is assured with the appropriate tools. Customers recommend the product for its practicality and usability.
4
3 reviews
5
2
4
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Filter by Ratings
Upgraded 65 mustang to Disc-Disc
5.0
5 years ago
Rob
West Michigan
Verified
This was an easy installation for my 65 Mustang. I replaced my 56 year old brake lines so I cannot comment on what it would take to reuse the existing. The existing holes were reused. I did need to get new bolts for the fire wall adapter since I was replacing a 2 bolt factory unit, simple drive to NAPA. - Oh - I am not a mechanic, just a hobbyist.
Would Recommend
ez install
5.0
6 years ago
db
ft collins
Verified
ez install take your time to insure good fit on your lines
Would Recommend
Be sure to check booster pushrod length
2.0
6 years ago
Don
Texas
The booster pushrod is adjustable but even in max out condition and using extension shipped with booster, was too short to get proper MC engagement. Had to remove their extension screw and fabricate a longer one from a metric SS screw to get proper engagement. Do yourself a favor and purchase the depth checking tool to ensure proper engagement. On a 66, this is tight and a PITA to R&R.
Would Not Recommend
Showing 3 of 3 reviews
Questions & Answers
Questions & Answers
2 Questions • 2 Answers
Will this work with a manual transmission?
by Corey
• 3 years ago
1 answer
View Answer
What pedal would you recommend for this. I'm installing in a 52 f-100 . Kit looks complete , is there anything else that is needed for instalation? does this use vacuum from the intake.
by None
• 5 years ago
1 answer
View Answer
2 of 2 questions shown
Fitment
Fitment
1964-1966 Ford Mustang