1972 brake porportioning valve question please help
 

OK I lost my brake valve off the back of my rollback like an idiot. You would not believe how hard it is to find a replacement cast valve.... does anyone know what years will work on my 72 K10 ....thanks

Re: 1972 brake porportioning valve question please help
 

You can buy new at Inline tube, a little pricy tho.

Re: 1972 brake porportioning valve question please help
 

Last I looked brass replacements were available - maybe a WTB post on the parts board will help turn up a good used replacement cast piece.

Re: 1972 brake porportioning valve question please help
 

I bought a new one for $195 +$15 shipping only to be told several days later that they were
out of stock

Re: 1972 brake porportioning valve question please help
 

LMC part 34-3200 - I bought that one - correct look and function replacement, worked fine. $225. I have not found a cost shortcut (i.e. a $99 valve). I would not go with a generic part from cpp, etc, personally.

Re: 1972 brake porportioning valve question please help
 

Surely someone has 1 or more sitting in a parts tuck ,I'd hit up the 4wd guys .:chevy:

Re: 1972 brake porportioning valve question please help
 

Thanks Jocko ill see if incan get one of those.

Re: 1972 brake porportioning valve question please help
 

That one is discontinued also......im hosed

Re: 1972 brake porportioning valve question please help
 

oh noooo! Sorry, didn't know that. There's got to be another place that still has em.

Re: 1972 brake porportioning valve question please help
 

You would think someone would have them ..there has to something out there in cast tha
would work??? Don't want to go brass.

Re: 1972 brake porportioning valve question please help
 

Inline tube, brass, about $85

Re: 1972 brake porportioning valve question please help
 

I think all the replacements nowadays are brass. So staying with cast is probably going to involve looking for a good used one.

The newer 73+ "squarebody" trucks use the same type of proportioning valve. It's mounted down on the front frame crossmember instead of up under the master cylinder.

I believe you'll want to look for one in the 73 through 77 range as those years had the same type of electrical connector for the warning light switch. 1978 & newer have a different style of switch connector. I think it can be changed out for the earlier style but you'd still need to find that part off an earlier valve.

And if I remember correctly, 71-72 had one front brake line exiting the prop valve that went into a Tee to split it left & right. While 73+ made use of the valve's 2 front outlets. So you may need a 3/8"-24 inverted flare plug to cap off one of the unused outlets.