HOTROD......1974 Triumph TR6 with a 5.0 HO

New front brembo disc, four piston calipers, stock drums in the rear,new lines, new proportionate valve, pressure bleed the system...........no air!

But I have very little brakes.

I think it might be the brake booster ( the only thing I did not change or rebuild) ( vac assisted brakes)

Any Ideas?