Pedal travel/brake booster

[pontiacgp]

if you just get the hiss when stepping on the brakes that's normal. When you depress the pedal the vacuum is being moved from one side of the diaphragm to the other through a valve that's opened by depressing the pedal

 

[19cutlass79]

Thanks for the input guys, did the clamp test no change, so the only thing left is the prop valve (hate this thing hehe) and the booster, I picked up a b body booster for cheap so figure I'd swap them out supposed to be an upgrade over the stock dual 9" g body one, the b body is 12'' dual diaphragm. So after I install the new booster, I am going to mess with the prop valve and possibly replace it, and if that don't fix it then I will have to come back to the new master cylinder possibly being a dud :| I love this hobby :shock: And if all that fails hulk hogen leg drop then I'm going to take a brake from this fussy little miss lol

wade