Brake Proportioning Valve Replacement

[WranglerTJForum]

I need to replace the brake proportioning valve on my 1973 Chevy K10 shortbed. It has lower front disc brakes and rear drums.

From what I can tell this looks like it is the right one:

73-77 Chevy/GMC Full Size Truck Front Disc/ Rear Drums Proportioning Valve w/ Factory Pin Switch

Check out the deal on 73-77 Chevy/GMC Full Size Truck Front Disc/ Rear Drums Proportioning Valve w/ Factory Pin Switch at Carolina Classic Trucks, Inc.

www.carolinaclassictrucks.com

Is there a better / cheaper option? Just want to make sure I order the correct part.

 

[Broken85]

That’s it, but please don’t pay that price!!!!

Amazon.com: PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 Fit for GM Street Rod Classic Car & Truck : Automotive

Buy PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 Fit for GM Street Rod Classic Car & Truck: Proportioning Valves - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

a.co

 

[WranglerTJForum]

That’s it, but please don’t pay that price!!!!

Amazon.com: PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 Fit for GM Street Rod Classic Car & Truck : Automotive

Buy PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 Fit for GM Street Rod Classic Car & Truck: Proportioning Valves - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

a.co

Thanks! I saw these on Amazon but wanted to be sure I ordered the right one since there were quite a few.

 

[CalSgt]

I need to replace the brake proportioning valve on my 1973 Chevy K10 shortbed. It has lower front disc brakes and rear drums.

From what I can tell this looks like it is the right one:

73-77 Chevy/GMC Full Size Truck Front Disc/ Rear Drums Proportioning Valve w/ Factory Pin Switch

Check out the deal on 73-77 Chevy/GMC Full Size Truck Front Disc/ Rear Drums Proportioning Valve w/ Factory Pin Switch at Carolina Classic Trucks, Inc.

www.carolinaclassictrucks.com

Is there a better / cheaper option? Just want to make sure I order the correct part.

Combination valve, and they’re all junk… and I think they’re all from the same warehouse in China.

CPP, Summit and others seem to all get horrible reviews due to leaks.

What’s wrong with the one on your truck?

 

[WranglerTJForum]

Combination valve, and they’re all junk… and I think they’re all from the same warehouse in China.

CPP, Summit and others seem to all get horrible reviews due to leaks.

What’s wrong with the one on your truck?

Well I've got to replace one of the hard lines and I figured while I am in there replacing the hard lines I may as well do the proportioning valve. Nothing is wrong with it but it's got quite a bit of rust on the outside. Should I just leave it?

I was just thinking in terms of preventative maintenance.

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[Broken85]

I don’t know if they are all complete junk, I have replaced 3-4 of these without issue. Agreed, that they are all made by the same Uighur ‘s sweat shops in China, but I have not had an issue with any of the ones I have replaced leaking or not working.

It is a huge pain in the a** to get the 5 steel lines to get threaded and seated properly, but it isn’t impossible. I think that most the leak complaints are from people trying to wrench down on the flares and not seating them on the flanges first. Everyone says the originals are the best but that isn’t true. All but one that I have replaced were factory originals that started to leak.

 

[WranglerTJForum]

I don’t know if they are all complete junk, I have replaced 3-4 of these without issue. Agreed, that they are all made by the same Uighur ‘s sweat shops in China, but I have not had an issue with any of the ones I have replaced leaking or not working.

It is a huge pain in the a** to get the 5 steel lines to get threaded and seated properly, but it isn’t impossible. I think that most the leak complaints are from people trying to wrench down on the flares and not seating them on the flanges first. Everyone says the originals are the best but that isn’t true. All but one that I have replaced were factory originals that started to leak.

I know exactly how that goes. It's a real pain in the but to try and get 5 steel lines threaded and seated properly. I've done it before on other vehicles and with patience it can be done without any issues. I suspect you're right, that the leaking many are seeing is due to wrenching down on the flares without ensuring that they're seated properly first.

I'll order one of the replacement valves off Amazon and I'll keep my factory one as well. Never hurts to have a spare anyways.

 

[ali_c20]

I run 2 Summit proportioning valves without leaks or any other issue. I have stainless brake lines and getting them threaded is a pita but when done right no leaks.
Purchased mine before the pandemic maybe that makes a difference.

 

[Dejure]

Keep in mind, these things are dirt simple. It's, essentially, just a sliding rod that leaves both lines open or gets pushed to one end or the other when. . . .

 

[Oldbear42]

We replaced mine as it was stuck in the "brake save mode" - leaking rear brake cylinders, so I only had front brakes. The other thing to get at the same time is the brake proportioning valve tool to keep it from going into save mode. (Small knurled knob that has a post that threads into the valve). Mine was easier to get at, as I had the inner fenders out then. (81 C20)

 

[chevdude]

Why complicate things. If it works, leave it.