Power brake help!!

[marcfridge]

I did a 4 wheel disk swap on my 62 effie. It is a Performance Online kit which uses a GM power booster. My brake pedal is hard as a rock and I have to fight to get the truck to stop. I added a vacuum canister, but it didn't help. I am running a 460 with Edelbrock performer carb, intake and cam with a C-6 auto. I assume its a vacuum issue, but I'm lost at this point. Any insight out there?

[bruceandersson]

You need to verify the check valve is centered it may be blocking either the front or rear systems.

[Hunter's 64]

was / is the porportioning vale set up for 4 wheel disk , or could it be a front disk rear drum ?

Danny

[marcfridge]

Its supposed to be a four wheel disc valve. I'll have to check on it. thanks guys. I'd like to post pictures, but I still haven't figured it out.