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

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.

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.

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

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?

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

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. :but:

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

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.