Hi Everyone,

Anyone know where I can get the two brake proportioning valves for a 68 Roadrunner,
front disc, rear drum?

Any help would be appreciated!!

Jim

Try Inline tube.

What do you mean 2? An original 68 system (Bendix) would have the distribution block (common) and the single proportioning valve for the rear drums mid frame.

The distribution block is the same whether the car has disc or drums , the second valve is a hold off valve.

I know what they are. I stated that. It is not a hold off valve, it is proportioning valve. The KH system in 70 incorporated a hold off valve (or metering valve) for the front disc. Proportioning valve applies normal pressure to rear until a set point around 300-500 and which point it only pass half the pressure above set point valve. There is no delay or hold off with a proportioning valve.
I was confused by his statement of 2 proportioning valves.