Quote:
Originally Posted by 52napco
You would think someone would have them ..there has to something out there in cast tha
would work??? Don't want to go brass.
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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.