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#91031450
Single Diaphragm Power Brake Booster, 7 Inch, Chrome Finish
- 3-3/4" thick from master cylinder mount face to firewall mount face
- 4" long firewall mount face to end of pushrod
- Booster mounts to bracket or body with four bolt square pattern on 3-3/8" centers
$164.99
/each
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Product Summary
Universal Fit, 3.75" Overall Thickness, Steel, Chrome
- 3-3/4" thick from master cylinder mount face to firewall mount face
- 4" long firewall mount face to end of pushrod
- Booster mounts to bracket or body with four bolt square pattern on 3-3/8" centers
- Master cylinder studs are two 3/8" coarse studs across from each other on 3-3/8" centers
- Booster on master cylinder side for master cylinder snout or flange to fit into is 1.620"
Key Specs
| MFG. Part # | 91031450 |
| Brand | Speedway Motors |
| Outside Diameter | 7" |
| Material Type | Steel |
| Finish | Chrome |
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Speedway Motors 91031450 Details
These show-quality chrome 7" diameter boosters have a single diaphragm for use with lightweight cars. Accepts most power brake master cylinders.
- Pushrod stud is 3/8" fine thread
- Master cylinder studs are two 3/8" coarse studs across from each other on 3-3/8" centers
- Booster is 3-3/4" thick
Learn more about selecting the proper brake booster for your vehicle by reading our tech article.Brake System Selection.
Charts
Booster Tech Tip (GIF)
Specs
- 3-3/4" thick from master cylinder mount face to firewall mount face
- 4" long firewall mount face to end of pushrod
- Booster mounts to bracket or body with four bolt square pattern on 3-3/8" centers
- Master cylinder studs are two 3/8" coarse studs across from each other on 3-3/8" centers
- Opening of booster on master cylinder side for master cylinder snout or flange to fit into is 1.620"
- Booster is 3-3/4" thick from mounting surface to mounting surface for master cylinder
- Shaft coming out of booster for attachment to pedal arm is 3/8" fine thread
- Outside diameter is 7"
Guides & Documents
Speedway Motors 91031450 Specifications
Speedway Motors 91031450 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031450 |
| Brand | Speedway Motors |
| Outside Diameter | 7" |
| Material Type | Steel |
| Finish | Chrome |
| GENERAL | |
| Overall Thickness | 3.75" |
| Bolt Hole Pattern | 3.38" x 3.38" |
| Centerline of Holes | 3.38" |
| Brake Booster Type | Vacuum Diaphragm Single |
| Sold in Quantity | Each |
Ratings & Reviews
4.5
4 Reviews
Customers appreciate the product for its quality and practical features. Notably, it improves the safety of the braking system, as demonstrated in a 33 roadster. The chrome master cylinder and universal pedal assembly are highlighted for being easy to install and functioning perfectly. The product also enhances the aesthetic appeal of the vehicle. A customer expressed satisfaction with the product in their 1934 Ford Coupe, affirming its reliability and effectiveness, even in classic cars. Thus, the product excels in usability, material quality, and safety compared to its competitors.
Ratings & Reviews
4.5
4 Reviews
Customers appreciate the product for its quality and practical features. Notably, it improves the safety of the braking system, as demonstrated in a 33 roadster. The chrome master cylinder and universal pedal assembly are highlighted for being easy to install and functioning perfectly. The product also enhances the aesthetic appeal of the vehicle. A customer expressed satisfaction with the product in their 1934 Ford Coupe, affirming its reliability and effectiveness, even in classic cars. Thus, the product excels in usability, material quality, and safety compared to its competitors.
4.5
4 reviews
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Filter by Ratings
Yes I would buy this product again.
4.0
a year ago
Amf
San dimas
Verified
The master cylinder and the power booster I bought were awesome quality was great love the chrome.
Would Recommend
nice short unit
5.0
4 years ago
Horses and hot rods ranch
Argyle NY
Verified
used this setup on a 33 roadster to make braking system safer, also used chrome master cylinder backed up with universal pedal assembly, easy install worked perfectly.
Would Recommend
yes
4.0
6 years ago
ron
ohio
Verified
to improve braking and look good.
Would Recommend
Very happy with 7" brake booster
5.0
10 years ago
Rich
Hurleyville N.Y.
Verified
Booster is in my 1934 Ford Coupe
Would Recommend
Showing 4 of 4 reviews
Questions & Answers
Questions & Answers
1 Question • 1 Answer
Vacume HOw much vacume does this require? I have a 1970 Mustang with a 351 Cleveland that only provides 12 " ov vacume. I would like ot install a power brake booster, but have been running into problems with the amount of vacume that is required.
by ADrian
• 13 years ago
1 answer
View Answer
1 of 1 questions shown