GM A-body brake problem

[CPPAaron]

The use of an 1-1/8" master will increase volume of the fluid with less pressure. The use of a 1" will have more pressure with less volume.
If the rear wheel cylinders are too large it will take more pedal pressure to stop.
You are more then welcome to call us at 800-522-5004 and speak to our tech department as well.

[gmiles]

When pressing the brake pedal, should fluid jump out of the back part of the reservoir like it does in the front?

[gmiles]

After talking with Van on the tech line, I pulled the booster and brought it in to CPP. It was bad. CPP replaced it under warranty. Brakes work great now.

thnx CPP.