(0)
Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith
Large Image

Disc-Drum GM Proportioning Valve

Price:$59.99
Click image to enlarge Click image to enlarge
Watch the video below to learn more about the differences in brake lines, flare types and fittings you may want to consider before plumbing away on your current chassis project.

 

These proportioning valves are what GM used on many cars in the 70's. They are non-adjustable and may require an adjustable valve in the rear brakes if needed. This is a combination valve which incorporates metering (for the front brakes) and proportioning (for the rear brakes) into one valve. 

910-31351 Instructions (PDF)

  • Centerline of Holes: 2.625
  • Overall Thickness: 1.08
  • Overall Width: 2.572
  • Overall Length: 5.367
  • Material Type: Brass
  • Bottom Front Port has 3/8"-24 IFF threads - goes to one front brake
  • Top Front Port has 3/8"-24 IFF threads - goes to one front brake
  • Middle Top Port has 1/2"-20 IFF threads - comes from master cylinder
  • Rear Top Port has 7/16"-24 IFF threads - comes from the master cylinder
  • Rear Most Port has 9/16"-18 IFF threads - goes to rear brakes
Reviews for Item #: 91031351
REVIEWED BY 6 CUSTOMERS
Sort by:
Displaying Reviews 1-5 of 6
Processing

[ 1 of 2 customers found this review helpful ]
 

a must for disc/drum brakes

By jim from wny on 2/24/2010
Bottom Line: Yes, I would recommend this to a friend

worked just fine

Was this review helpful to you? Yes / No - You may also flag this review.
Please let us know what kind of issue this is:









Email Address:

Comments:


[ 3 of 3 customers found this review helpful ]
 

Conveinient Kit

By Backyard Bob from Illinois on 2/8/2010
Bottom Line: Yes, I would recommend this to a friend

Quick and easy way to plumb a cowl mounted booster. Includes all fittings needed

Was this review helpful to you? Yes / No - You may also flag this review.
Please let us know what kind of issue this is:









Email Address:

Comments:


[ 1 of 1 customers found this review helpful ]
 

worked great

By sal from brick nj on 8/7/2010
Bottom Line: Yes, I would recommend this to a friend

used it on my 34 ford with a gm master cylinder and worked fine.

Service & Delivery comments:

on time, no hassel, speedway #1

Was this review helpful to you? Yes / No - You may also flag this review.
Please let us know what kind of issue this is:









Email Address:

Comments:


[ 1 of 1 customers found this review helpful ]
 

COULDN'T BELIEVE I FINALY FOUND IT!

By DODGETHIS59 from SKYLINE, AL on 8/25/2010
Bottom Line: Yes, I would recommend this to a friend

NONE OF MY PARTS SUPPLIERS CARRY A REGULAR DISC/DRUM VALVE ANYMORE. BUT SPEEDWAY NOT ONLY HAD IT BUT HAD IT IN A KIT WITH EVERYTHING I NEEDED. GOOD JOB! I WILL LOOK HERE 1ST IN THE FUTURE.

Service & Delivery comments:

AGAIN PLEASED WITH A GREAT PRICE & FAST DELIVERY.

Was this review helpful to you? Yes / No - You may also flag this review.
Please let us know what kind of issue this is:









Email Address:

Comments:


[ 1 of 1 customers found this review helpful ]
 

Would buy again

By Doughboy from Andalusia,Illinois on 8/30/2010
Bottom Line: Yes, I would recommend this to a friend

I used this on my 1957 Chevy, worked great and no problems.

Was this review helpful to you? Yes / No - You may also flag this review.
Please let us know what kind of issue this is:









Email Address:

Comments:


Displaying Reviews 1-5 of 6
 

Questions and Answers for Item #: 91031351

Get your questions answered by the community. Ask or answer questions below.

7 Questions | 7 Answers
Displaying Questions 1-5 of 7
Processing

Q:

does this proportioning valve have a stop taillight hook_up ?

Asked on 3/27/2011 11:25:19 AM by chevy from chicago

Answers (1) Know the answer? Answer this question

Q:

will this valve work on an 83 cadillac that had power steering assist and now has vacuum booster

Asked on 4/19/2011 9:10:33 PM by mo from chicago

Answers (1) Know the answer? Answer this question

Q:

Will this valve work on my 83 Cutlass Supreme with a 3.8. It looks the same and I'm pretty sure the measurements are right.

Asked on 5/12/2011 12:41:10 PM by Stacy from West Milton, Ohio

Answers (1) Know the answer? Answer this question

Q:

will this vale work on 1988 s10 pickup

Asked on 6/14/2011 11:10:02 AM by nonk from New Iberia LA.

Answers (1) Know the answer? Answer this question

Q:

Will this work on a 77 Chevy pickup?

Asked on 6/15/2011 2:25:54 PM by Rob from Modesto, Ca

Answers (1) Know the answer? Answer this question
Displaying Questions 1-5 of 7

Do you have a question about this product?

Email this page
Close [x]
You can send this product by email to a friend!
Enter the required information in the spaces provided below. They will receive an Email with the picture of this product and a link back to our site.
Your Name:
Your Email:
Friends Name:
Friends Email:
GM Proportioning Valve - Disc Front/Drum Rear
Price:
$59.99
EA
In Stock
Item #:
91031351
 
(6 Ratings)
GM Combo Valve Disc/Drum, 3/8" Outlet
Price:
$59.99
EA
In Stock
Item #:
91031364
 
(0 Rating)
Our Techs also Suggest the Following:
Brass Adapter, IFF to IFM
Item #:
Item Details:
Note: "3/8" size is a 3/8"-24 IFM to 7/16"-24 IFF and the "7/16" size is 7/16"-24 IFM to 3/8"-24 IFF
 
(5 Ratings)
You May Also Be Interested In...