WTB Proportioning Valve - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Ironhorse** · 02-09-2005, 06:17 PM

I'm in need of a disc/drum proportioning valve for my '71 1/2 Ton 4x4. Anyone have such for sale or will trade parts for it. Anyone know what years will interchange? Guess I need to get a parts interchange book. Let me know what you have and total with shipping to 67152 zip.

**67sss** · 02-09-2005, 07:52 PM

how do you tell what fits what? here's what I have laying around, let me know if it'll work.

**Ironhorse** · 02-09-2005, 08:27 PM

67sss, that one is totally differant from the one on my 4x4. My son just got home from work a bit ago and has one that he got from a buddy at work. It is just like mine, came from a truck (72 GMC) that has not been running for some time. Brake booster and master cylinder still hooked together but laying in the engine compartment. Lines to the prop valve were all tight to the valve. Hope it is good? What goes bad on these things and can they be re-built? i will post a pic of my valve (same as my son brought home) later tonight. Says "Bendix" on the side.

**67sss** · 02-09-2005, 09:52 PM

I had a post on the message board a while back about this subject, lots info. might want to do a search.
here's the link......http://67-72chevytrucks.com/vboard/s....php3?t=134745

**Ironhorse** · 02-09-2005, 11:07 PM

Pic of the Prop Valve I need. "Bendix" cast on one side with "0411". Other side has "6" over top "096". Anybody?

**Ironhorse** · 02-10-2005, 06:17 AM

ttt

**raggedjim** · 02-10-2005, 10:37 AM

Ironhorse, Classic performance (they have a website, just browse for it) sells new ones in the 65-75 dollar range. I got one for a 4-wheel disc setup from them.

Not trying to take business from anyone, but this is the only place I found new ones.

Roger

**Ironhorse** · 02-10-2005, 07:00 PM

raggedjim, is that for a four - individual disc brake - set-up at each wheel or for a 4 wheel drive disc brake set-up? Not sure of your meaning? Guess I am

Chevy Muscle · 02-10-2005, 07:48 PM

Ironhorse, your son's should be fine.

You need one that is made for disks in the front and drums in the back. It will have the residual pressure thinggy that you need for the back but not the front. A 4 wheel disk or a 4 wheel drum prop valve will not work correctly in your application.

I guess I'm hording all of the prop valves lately. I'm having the same problem.... but the one your son has should work for you.

**raggedjim** · 02-11-2005, 10:13 AM

http://www.classicperform.com/6092ch...ake-components

They have either, Rg

02-09-2005, 06:17 PM	#1
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,254	WTB Proportioning Valve I'm in need of a disc/drum proportioning valve for my '71 1/2 Ton 4x4. Anyone have such for sale or will trade parts for it. Anyone know what years will interchange? Guess I need to get a parts interchange book. Let me know what you have and total with shipping to 67152 zip. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

02-09-2005, 07:52 PM	#2
67sss Registered User Join Date: Nov 2002 Location: Mt. Vernon, WA.. Posts: 2,324	valve how do you tell what fits what? here's what I have laying around, let me know if it'll work. Attached Images

02-09-2005, 08:27 PM	#3
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,254	67sss, that one is totally differant from the one on my 4x4. My son just got home from work a bit ago and has one that he got from a buddy at work. It is just like mine, came from a truck (72 GMC) that has not been running for some time. Brake booster and master cylinder still hooked together but laying in the engine compartment. Lines to the prop valve were all tight to the valve. Hope it is good? What goes bad on these things and can they be re-built? i will post a pic of my valve (same as my son brought home) later tonight. Says "Bendix" on the side. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

02-09-2005, 09:52 PM	#4
67sss Registered User Join Date: Nov 2002 Location: Mt. Vernon, WA.. Posts: 2,324	valve I had a post on the message board a while back about this subject, lots info. might want to do a search. here's the link......http://67-72chevytrucks.com/vboard/s....php3?t=134745 Last edited by 67sss; 02-09-2005 at 09:55 PM. Reason: add link

02-09-2005, 11:07 PM	#5
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,254	Pic of the Prop Valve I need. "Bendix" cast on one side with "0411". Other side has "6" over top "096". Anybody? __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks Last edited by Ironhorse; 11-05-2006 at 06:27 PM.

02-10-2005, 06:17 AM	#6
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,254	ttt __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

02-10-2005, 10:37 AM	#7
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,522	Ironhorse, Classic performance (they have a website, just browse for it) sells new ones in the 65-75 dollar range. I got one for a 4-wheel disc setup from them. Not trying to take business from anyone, but this is the only place I found new ones. Roger __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203

02-10-2005, 07:00 PM	#8
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,254	raggedjim, is that for a four - individual disc brake - set-up at each wheel or for a 4 wheel drive disc brake set-up? Not sure of your meaning? Guess I am __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

02-10-2005, 07:48 PM	#9
Chevy Muscle < 69 Blazer Join Date: Mar 2004 Location: Nevada, TX Posts: 293	Ironhorse, your son's should be fine. You need one that is made for disks in the front and drums in the back. It will have the residual pressure thinggy that you need for the back but not the front. A 4 wheel disk or a 4 wheel drum prop valve will not work correctly in your application. I guess I'm hording all of the prop valves lately. I'm having the same problem.... but the one your son has should work for you.

02-11-2005, 10:13 AM	#10
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,522	http://www.classicperform.com/6092ch...ake-components They have either, Rg __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203



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