Where is the proportioning valve located?

[alamantia]

Where is the porportioning valve located on LS1 cars?

Friend of mine swaped his V6 drum brake rear for a disc rear out of a LS1 car and complains of a soft brake pedal even after plenty of bleeding and fresh fluid. Im telling him that the proportioning valve may have to be changed.

Any other suggestions? Master?

[BonzoHansen]

ABS unit, I think. IIRC 2 lines from MC to ABS unit, 4 lines out of ABS unit.

I have seen cars where the ABS was removed and they just t'd the lines from MC to wheels. I do not remember if they put an adjustable valve in.


Bleed it more.

[Savage_Messiah]

He doesn't need to change the valve. Same one from v6 to v8, disc to drum.

[Tru2Chevy]

He doesn't need to change the valve. Same one from v6 to v8, disc to drum.

LS1 cars had no drum brakes....

- Justin

[Savage_Messiah]

All I'm saying is when I swapped rears the first time, I looked it up and the part numbers were the same. Then again they coulda changed it from lt1 to ls1 i suppose.