Proportioning Valve: 79-81 Disc x 4 NOS
Last of the Genuine factory Proportioning Valves
Till this last stock is sold only. Good alternatives are the reproduction PV's.
For Firebirds & Trans Ams from 79-81, Carby or turbo.. with Factory Disc Brake rear end.. fits all the engine sizes, 301,400, 350, 80 Turbo & 403 etc.
- This is NOT for the Drum brake rear - that one is listed elsewhere.
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What does a proportioning valve do?A proportioning valve is used in the rear to decrease the rate of pressure rise to the drums relative to the pedal force as weight is shifted to the front during braking. This prevents the rear from locking up under hard braking conditions.What are the symptoms of a bad proportioning valve?If your prop valve has gone bad your rear wheels will lock up easily, especially on wet surfaces.

Regular price
$550.23
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Last of the Genuine factory Proportioning Valves
Till this last stock is sold only. Good alternatives are the reproduction PV's.
For Firebirds & Trans Ams from 79-81, Carby or turbo.. with Factory Disc Brake rear end.. fits all the engine sizes, 301,400, 350, 80 Turbo & 403 etc.
- This is NOT for the Drum brake rear - that one is listed elsewhere.
-
What does a proportioning valve do?A proportioning valve is used in the rear to decrease the rate of pressure rise to the drums relative to the pedal force as weight is shifted to the front during braking. This prevents the rear from locking up under hard braking conditions.What are the symptoms of a bad proportioning valve?If your prop valve has gone bad your rear wheels will lock up easily, especially on wet surfaces.
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