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Under-Dash Brake Pedal Assembly, Dual Diaphragm

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Specs
Material Type:
Steel
Finish:
Painted
Sold in Quantity:
Kit
Feed:
Dual
Outlet Fitting:
Dual 1/2"-20 IFF in the front, dual 9/16"-18 IFF in the rear
Bolt Hole Pattern:
3.38" x 3.38"
Overall Length:
14.00
Diameter:
7.00
Bore Size:
1.00
Notes
The pushrod on this unit is bent in order to correct the geometry for the pedal/booster alignment.
Under-Dash Brake Pedal Assembly, Dual Diaphragm
Under-Dash Brake Pedal Assembly, Dual Diaphragm
Under-Dash Brake Pedal Assembly, Dual Diaphragm

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Details

Reviews (12)

Q & A (24)

What's in the Box

Info

This universal bolt-on swing pedal assembly provides a secure way to mount the brake power booster and master cylinder on the firewall when upgrading brakes on a wide range of cars and trucks. Pedal bracket can be trimmed to fit your application and has holes to place pedal pivot point at 7", 8.5", 10", 11.5", or 13" from the firewall.

  • Includes a dual feed 1" bore master cylinder
  • Dual front outlets 1/2"-20 IFF
  • Dual rear outlets 9/16"-18 IFF
  • Plugs are included for un-used ports
  • Dual diaphragm 7" diameter booster
  • Pedal Length:  13-1/8" from pivot point to pad hole
  • Mount Bracket:  14" long
  • Booster Bolt Pattern:  3-3/8" square

Booster Tech Tip (GIF)

Specs


Customer Reviews

Rated 4.4 out of 5 by 12 reviewers.
RATING BREAKDOWN
12 reviews
5 Stars
5
4 Stars
7
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

47Ziggy
Verified Purchaser
Verified Reviewer
Willis, TX

well designed product

July 11, 2016
Product so far working out great. it has been installed but not operational as not at that point. like adjustability factor with length and pedal location. only issue and feel driven by vehicle we are using it in is that the pedal length is short. we are using it in a 47 Willys truck. sure it would be fine in typical vehicle. this one has high dash location.
Yes, I recommend this product.
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Nashman
Verified Purchaser
Sleepy Hollow, Il

Full stopping power

April 24, 2016
Had a very tight space in the old Nash, fit was great, plenty of stopping power. The car is about 3800 lbs. the old retro pedel looks looks great. There are a ton of ways to make it fit. Everything worked great. Thanks
Pros:
  • Small Size Nice N Tight
  • Kept The Old Retro Look
Cons:
  • Not A One
Yes, I recommend this product.
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Roger
Verified Purchaser
Knoxville, Tennessee

good quality product for a very reasonable price

April 05, 2016
I used this system in a 1940 chevy pickup. had to make minor modifications due to limited space, but worked great!
Pros:
  • Quality Hardware
  • Beefy Construction
Cons:
  • No Template
  • No Instructions
Yes, I recommend this product.
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Timm
Verified Reviewer
Kansas City

Adding to my previous review

February 25, 2016
Ok so I left a review a couple months ago about how much I dug this pedal design. Well a couple hundred miles and I'm still happy with it but I do have something to add. I spent longer than I'd like to admit chasing my tail on my front brakes dragging and had it end up being the lack of a return spring in my brake pedal. It had just enough play and weight in the pedal with out one that it was basically barely tapping the brakes on bumps until they heated up. Now I realize that a return spring is needed in all brake pedal set ups but because this was listed as a complete set up and made zero mention of adding a spring I thought maybe you'd added one somewhere I couldn't see. What I did was use the tiny hole drilled in the brake pedal arm and looped a spring into that and ran it forward, I assume that's what that hole was for. However I do see in the dirt track catalog that you do offer a compression spring that would fit on the push rod itself. I'm sure both would work fine. Any how just thought future buyers would appreciate the heads up that they need to add a spring. Maybe in the future you could add a notation that one is needed, with so many different pedal positions available on this unit I don't know that there's a one size fits all spring you could include but a mention of it and maybe a "you might also be interested in this" link to some return springs would be a good idea.
Yes, I recommend this product.
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Fastback
Verified Purchaser
Verified Reviewer
Kansas city

Perfect

February 02, 2016
Product came quickly. Great easy installation on custom jobs.
Yes, I recommend this product.
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mike
Verified Purchaser
stanford, ky

worked out real nice on 1940 chevy truck rat rod.

January 29, 2016
great product .worked out real good did not have much room in 1940 chevy truck. Custom fit will always have to cut something to fit.
Yes, I recommend this product.
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Timm
Verified Reviewer
Kansas City

Impressive

October 14, 2015
This is possibly the nicest thing I've bought from speedway in the last decade or so. Great coating, good design, it actually fit and did what it was supposed to do. It fit my 46 ford perfect, I had to cut a bit of the threaded push rod to have the pedal in the correct area but seeing as I have it hanging on one of the shortest of like 13 possible hanging positions it's acceptable. I dig that it's got a stock -for the era- pad and it's removable should o want to change it. The grease zerk and bushing on the actual swing point are a nice touch and let me know your actually paying attention to design. I wish that it had a base template to drill the holes in the firewall but it wasn't to hard to trace and make one, the included bench bleeding kit with instructions were a nice touch but I ended up on other parts supplier web sites to find out how and were the supplied plug goes into the master to convert it to a shallow set up as well as how to adjust push Rod length properly. It's about all I've got to wine about but most of the time parts come with a crude drawing at best so that's sort of a given. Thumbs up
Pros:
  • Solid Construction
  • Grease Zero On Pedal
  • Good Paintcoating
  • Bracket Perfect Length
  • Everything included
Cons:
  • No Template
  • No Instructions To Adjust
Yes, I recommend this product.
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hankthebigdog
Verified Purchaser
Pensacola, OK, USA

great fit and function.

March 05, 2015
I purchased this assembly to go in a 1934 auburn street rod build. It fit perfectly where I needed it to go and looks and functions great. I was surprised to find all of the needed peices to lengthen the rod in the kit. The dual diaphram is good for the big car and still small enough to not get in the way under such a small hood with a big block cadillac engine. The price was good and the quality seems to be all I could ask for. Overall, I am well satisfied.
Pros:
  • Adjustable
  • not bulky
Yes, I recommend this product.
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TheExtreme
Verified Purchaser
Sour Lake, Texas

Great product

October 13, 2014
Converted ny 1955 Pontiac from original manual brakes to power. Straight forward mounting. Sturdy part, not some flimsy piece of junk. Was able to heat and bend pedal arm to fit perfectly in relation to accelerator pedal. I highly reccomend this product.
Pros:
  • quality product.
  • Easy To Install
Yes, I recommend this product.
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auggie69
Verified Purchaser
Munford, TN, USA

Brake booster assembly

September 24, 2014
It looks good. Have not had a chance to install it yet.
Yes, I recommend this product.
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Page 1 of 2

Product Q&A

24 questions : 26 answers

1 answers

will this work on a 47 chev styleline with a 96 impla SS rear w/disc, and mustang 2 front disc?

fixit
Texas, USA
February 19, 2015

will this work on a 47 chev styleline with a 96 impla SS rear w/disc, and mustang 2 front disc?

Answers

February 19, 2015
EricM
With the many adjustments on the kit 9106002 It should adapt to your 47 fairly easily. The one inch bore will work for 4 wheel disc if you have sufficient vacuum of 18-20 inches you will have superior stopping power over manual brakes.
1 answers

is this a complete system. booster, master cylinder and bracket?

joeyt
canada
November 23, 2014

is this a complete system. booster, master cylinder and bracket?

Answers

November 24, 2014
EricM
Yes this is a complete unit including the pedal assembly, booster, and master cylinder.
1 answers

Dual booster with 1& 1/8 bore mc? I'm using your disc brake kit that uses a 74 f truck rotor and the pre 77 large car brake calipers for early for a 5x5.5 pattern on stock Spindles and see that the original master cylinder for the impala would have been a 1 & 1/8 inch bore. I currently have a manual master cylinder and think it stops poorly so I'm looking to upgrade to power this winter and figured that going with what was used stock as far as the bore size would eliminate some of the guess work from the new set up. I see you offer a dual boosted 1 & 1/8 mc with out a pedal and wondered if there were an option to buy this pedal with the bigger bore mc? I just don't want to assume the one inch is enough and then have it fall short of my expectations

Timm95
Kcmo
November 09, 2014

Dual booster with 1& 1/8 bore mc? I'm using your disc brake kit that uses a 74 f truck rotor and the pre 77 large car brake calipers for early for a 5x5.5 pattern on stock Spindles and see that the original master cylinder for the impala would have been a 1 & 1/8 inch bore. I currently have a manual master cylinder and think it stops poorly so I'm looking to upgrade to power this winter and figured that going with what was used stock as far as the bore size would eliminate some of the guess work from the new set up. I see you offer a dual boosted 1 & 1/8 mc with out a pedal and wondered if there were an option to buy this pedal with the bigger bore mc? I just don't want to assume the one inch is enough and then have it fall short of my expectations

Answers

November 10, 2014
EricM
Sorry this pedal assembly is only available with a 1" bore master cylinder. The two largest factors to consider when choosing master cylinder bore size are the pedal ratio and if there will be a power booster used. This master cylinder is sized appropriately for the pedal and booster being used. It has proven to be a highly effective combination on a wide range of brake systems, many of which are similar to yours.
1 answers

Do I need to use a pro portioning valve for the rear brakes or is this built into the unit?

Omally
April 28, 2014

Do I need to use a pro portioning valve for the rear brakes or is this built into the unit?

Answers

April 29, 2014
EricM
No a proportioning valve is not built in. We suggest an adjustable proportioning valve such as 91031353, 91031358, or 83526011179
2 answers

will this fit in 1954 buick special

zach78910
March 02, 2014

will this fit in 1954 buick special

Answers

July 20, 2014
ford84stepside
If you have some fabricating skills, yes. As far as just bolting in, probably not. You will probably have to fab a dash mount and for sure cut the hole for the push rod and drill for the mounting plate.
March 03, 2014
EricM
The pedal assembly with booster and master fit almost every application and can be shortened to fit your 54 Special. This mounts the booster and master cylinder under the hood and you will need to verify the flat surface or fabricate the necessary area to mount. The pedal assembly portion mounts under the dash and is strengthened mounting to the dash itself. It is no a direct bolt in and will take some fabricating to achieve the desired results.
2 answers

Is the tab hanging off the front of the bracket for an electric brake switch mount or is it for structural support?

ct22p
February 01, 2014

Is the tab hanging off the front of the bracket for an electric brake switch mount or is it for structural support?

Answers

October 14, 2014
TheExtreme
I used it for a brake light switch.
February 03, 2014
EricM
It is for support or mounting the pedal. This unit does not have a provision for an electric brake light switch but one could be added to it if you fabricate the brackets to mount it.
1 answers

Will the master cylinder with this assembly work with disc/disc brakes and are the resivors different size for front and rear brakes or the same. Mustang 2 front end, Ford 8.8 disc brake rear end.

Dangerousdan
Graham, WA, USA
November 16, 2013

Will the master cylinder with this assembly work with disc/disc brakes and are the resivors different size for front and rear brakes or the same. Mustang 2 front end, Ford 8.8 disc brake rear end.

Answers

November 18, 2013
EricM
Yes this master cylinder will work with disc brakes front and rear as long as the 1" bore size is adequate for your calipers. The reservoirs on this master cylinder are the same size for front and rear.
1 answers

can you email the mounting so i dont make a mistake i need two ck clearance under hood thanks

stu
tampa fl
March 10, 2012

can you email the mounting so i dont make a mistake i need two ck clearance under hood thanks

Answers

March 14, 2012
John
The booster mounts with a square bolt pattern of 3 3/8” tall and 3 3/8" wide center to center. The booster is 7” diameter and total length is 13” from the firewall to the end of the master cylinder.
1 answers

i have a 1952 chevy deluxe with a small block chevy 327 will this work on it

stu
tampa fl
March 08, 2012

i have a 1952 chevy deluxe with a small block chevy 327 will this work on it

Answers

March 09, 2012
John
Part number 9106002 This universal kit should work on your 1952 Chevy with the small block V8. It features a 7 inch diameter booster for the necessary valve cover clearance and the bracket from the firewall to the dash can be altered or cut to the desired length.
1 answers

Will this work on disc/disc aplication? Is the master cylinder included?

SoCal Dre
Ontario, CA
January 05, 2011

Will this work on disc/disc aplication? Is the master cylinder included?

Answers

January 07, 2011
John
You inquired about a chrome booster and master cylinder and we offer part number: 91031461 that would be recommended for your application. Your Cadillac is a heavier car and the dual diaphragm booster with one inch bore master should handle your application. One warning that comes to mind right away is vacuum requirement. You will need 18-20 inches of vacuum available at the booster to get the full power assist. If less than that you can not expect full assist gain from the booster. This is a polished stainless booster and chrome master cylinder and the cost is $337.99 and if ordered before the 10th of this month qualifies for our promotional holiday shipping of only $6.99 by ups ground within the Continental 48.
Page 1 of 3

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