78 k5
1/2 ton status
I helped a buddy with a 1998 dodge 1500 put on a body lift today...everything went great but when we started up the truck the brakes were stiff as a board and would hardly stop the truck. There is absolutely no play in the brake pedal. Anyone know what could have happened?

We are going to check vacuum lines etc... today, I'll post up what we find, thanks for the help