[cobra427mnsi]

Rick, thank you for your help and insight into our problem. I have 11" granada rotors with Camero calipers on front and 8.8 rear end with stock drums on back. I have the stock Mustang II master cylinder, brake booster and proportioning valve. My brakes have been poor from day 1 (1992 CR on the road in "95). I found that, if I use the emergency brake in conjunction with regular braking my brakes work much better. This tells me that the rear brakes are not working hard enough. I just bought a Wilwood proportioning valve that I will be installing. I also just received Don Scott's redesighned pedal that I will be installing soon. My problem is that I am just changing engines so the cobra is down right now and I won't be able to test the new parts for a while.

I did try a vacuum test on the booster as you suggested. I found the booster not to be working at all. I could not get the vacuum pump needle to even flutter. I also sucked on the tube and got a gasoline taste. So I will take your advice and install a check valve in a high location.

I will work out these problems yet. Thanks to you and Don for your assistance.

Paul