Wilwood master cylinder
I have a 71 Cutlass. I have installed the Wilwood kit. 6 piston front, 4 piston rear. Wilwood master and proportioning valve. The problem I'm having is the master cylinder is draining the front bowl to the back bowl. I keep losing the brakes. The bowl keeps sucking air. The master cylinder is at an angle in this car. I need help with this.

 

I had this happen to me once. It was due to a bad piston seal in the M/C.

 

Yes. No matter the brand or type, this is a classic sign of a bad M/C.

- Eric

 

I'm dropping the car off at Wilwoods place tomorrow. Will see what they say.