Ok heres the deal. 51 merc with a 78 camaro front sub and a 85 mercury rear. I have a under floor master and booster set up. I have the 2 lb residual to the front and 10 lb residual value to the rear. I have new rear wheel cyl and new front calipers. All new brake lines and fittings. No leaks anywhere. I have bled and bled . I have checked out the master by pluging the outlets and the piston will not move. It is air tight and working right. As soon as i hook everything up the pedal will not pump up. And if you crank it with the vac to the booster the pedal goes to the floor with ease. No brakes at all?

Anybody have any thoughts?