Proportioning valve

AJ/FormS said

P-valve(Proportioning) or a C-valve(Combination), and what the words really mean

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I think we are getting into semantecs but...


There are 3 devices that our cars use from the factory.

1. Distribution block with a brake warning light in it. (Drum/drum)

2. A distribution block with a brake warning light, with an external proportioning valve. 67 to mid 70, probably earlier years as well. (Disk / drum)

3. A "combo" valve that has distribution block, brake warning light, and proportioning valve all in one. Mid 70 up, (disk / drum)


Your points about the rear locking too soon are spot on.