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Old 12-12-2021, 12:22 AM   #1
67 twins
Senior Member
 
Join Date: Mar 2019
Location: Herculaneum MO (20 minutes south of St. Louis
Posts: 592
Proportioning valves

When I upgraded the wife's 67 to disc brakes I got a proportioning valve from a 71 thinking the best thing would be an original GM part made for these trucks. Worked great, but as a risk you always rum with used parts this one is now leaking.
So how do I find a new one that's correct for this truck. It seems when you search online it seems everyone lists a generic (disc/drum proportioning valve). If it were that simple the OE's would use one part number for everything.
Anyone have any good information?
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67 C10 283 T5 swapped longbed fleetside = wife's daily driver
67 C20 292 (originally a 250)4speed longbed fleetside w/original wooden bed=my project truck
67 C10 283+.060 (so a 292 as well)T5 swapped longbed fleetside=my DD
72 C1500 Sierra Grande 350 TH350 longbed fleetside=wife's fair weather truck
Can you tell we are fans of longbed fleetsides & 67s
Chris
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