Brake proportioning valve

[redmist]

Is the stock brake portioning valve on 1978 corvettes adjustable?
If not does anyone have any experience with after market valves and their installation?

I don't feel like my rear brakes are pulling their load (no brake dust on the rears, lots on the fronts ).
Thanks.

 

[Ken]

...(no brake dust on the rears, lots on the fronts)

That is not unusual at all. The fronts do most of the work.

 

[DDLS3]

The rear brake pressure is intentionally set lighter to prevent or reduce the chance of rear wheel lock up and loss of control on slick or wet roads. The rear brakes also have 2 circuits with 2 bleeders per caliper. If both have not been bled then it is likely that only half of your caliper is working correctly.