WTB a Disc Drum Proportioning valve - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Husker · 10-21-2007, 12:13 AM

Any one have one in Good working order? Going on a 70 GMC 4x4 with power brakes( doing the switch from non power to power). Thanks
Ron

70c10 · 10-21-2007, 12:17 AM

I got mine in a junkyard for $5. You may try Billsbowtie or teeitup, they might have some.

**uncle** · 10-21-2007, 07:48 AM

I don't think you have to change it unless you're also going from drum to disc.

Husker · 10-21-2007, 09:50 AM

Sorry my bad, I am going from Drum/drum non power to Disc/Drum Power. Will other year, models, etc. work
Ron

xshadow · 10-21-2007, 07:05 PM

I'm doing just about the same thing. I'm going from power drum/drum to power disk/drum. My truck isn't together yet, but I hope to drive it before winter...will I have to change this?

Husker · 10-21-2007, 09:48 PM

Xshadow I think you will just have to change your Proportioning Valve and MAYBE your front flexible brake lines.
Your booster should be OK.
Ron

yellowGT · 10-21-2007, 10:25 PM

Does anyone have a picture of what the prop. valve looks like cause im in the process of changing my 6 lug drum power front end to 5 lug disc power from a square body chevy but dont know what all parts I will need. Some people tell me spindles, rotors, calipers. Some tell me that along with the control a-arms. Others tell me that along with that prop. valve. Correct input would be very highly appreciated. Thanks guys.

By the way, I have a 69 with power brakes cause it has the booster and master cylinder. Parts are coming from a square body chevy.

xshadow · 10-21-2007, 11:12 PM

I almost have the truck in driving condition. All of the lines are new as well as the flexable lines I still need new calipers. I hope the pro. valve will work. this truck is really more of a beater to drive around/haul. I do want to drive it this winter

xshadow · 10-21-2007, 11:14 PM

I'll know if it will work soon...
HUSKER...not trying to highjack your thread...let us know how it works out for you so I'll know whats going to happen with my brakes.

10-21-2007, 12:13 AM	#1
Husker Registered User Join Date: Dec 1999 Location: Mid NE USA Posts: 2,212	WTB a Disc Drum Proportioning valve Any one have one in Good working order? Going on a 70 GMC 4x4 with power brakes( doing the switch from non power to power). Thanks Ron __________________ Member #111 68 C-10 Daily Driver 70 4x4 Project 76 Jeep CJ-5 Help Support the Board: http://67-72chevytrucks.com/vboard/payments.php He who knows nothing is closer to the truth than he whose mind is filled with falsehoods and errors. Thomas Jefferson

10-21-2007, 12:17 AM	#2
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,857	Re: WTB a Disc Drum Proportioning valve I got mine in a junkyard for $5. You may try Billsbowtie or teeitup, they might have some. __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

10-21-2007, 07:48 AM	#3
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,286	Re: WTB a Disc Drum Proportioning valve I don't think you have to change it unless you're also going from drum to disc.

10-21-2007, 09:50 AM	#4
Husker Registered User Join Date: Dec 1999 Location: Mid NE USA Posts: 2,212	Re: WTB a Disc Drum Proportioning valve Sorry my bad, I am going from Drum/drum non power to Disc/Drum Power. Will other year, models, etc. work Ron __________________ Member #111 68 C-10 Daily Driver 70 4x4 Project 76 Jeep CJ-5 Help Support the Board: http://67-72chevytrucks.com/vboard/payments.php He who knows nothing is closer to the truth than he whose mind is filled with falsehoods and errors. Thomas Jefferson

10-21-2007, 07:05 PM	#5
xshadow Registered User Join Date: Apr 2006 Location: va Posts: 553	Re: WTB a Disc Drum Proportioning valve I'm doing just about the same thing. I'm going from power drum/drum to power disk/drum. My truck isn't together yet, but I hope to drive it before winter...will I have to change this?

10-21-2007, 09:48 PM	#6
Husker Registered User Join Date: Dec 1999 Location: Mid NE USA Posts: 2,212	Re: WTB a Disc Drum Proportioning valve Xshadow I think you will just have to change your Proportioning Valve and MAYBE your front flexible brake lines. Your booster should be OK. Ron __________________ Member #111 68 C-10 Daily Driver 70 4x4 Project 76 Jeep CJ-5 Help Support the Board: http://67-72chevytrucks.com/vboard/payments.php He who knows nothing is closer to the truth than he whose mind is filled with falsehoods and errors. Thomas Jefferson

10-21-2007, 10:25 PM	#7
yellowGT Registered User Join Date: Jan 2006 Location: Garland, TX Posts: 970	Re: WTB a Disc Drum Proportioning valve Does anyone have a picture of what the prop. valve looks like cause im in the process of changing my 6 lug drum power front end to 5 lug disc power from a square body chevy but dont know what all parts I will need. Some people tell me spindles, rotors, calipers. Some tell me that along with the control a-arms. Others tell me that along with that prop. valve. Correct input would be very highly appreciated. Thanks guys. By the way, I have a 69 with power brakes cause it has the booster and master cylinder. Parts are coming from a square body chevy.

10-21-2007, 11:12 PM	#8
xshadow Registered User Join Date: Apr 2006 Location: va Posts: 553	Re: WTB a Disc Drum Proportioning valve I almost have the truck in driving condition. All of the lines are new as well as the flexable lines I still need new calipers. I hope the pro. valve will work. this truck is really more of a beater to drive around/haul. I do want to drive it this winter

10-21-2007, 11:14 PM	#9
xshadow Registered User Join Date: Apr 2006 Location: va Posts: 553	Re: WTB a Disc Drum Proportioning valve I'll know if it will work soon... HUSKER...not trying to highjack your thread...let us know how it works out for you so I'll know whats going to happen with my brakes.

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