1980 dually 454 if that matters just put a new master cylinder, was perfect, power cteering pump leaks a bit was just going to run it for a little more untill got more money. gets hard half way through the turn like no steering, so pump right? but brakes were perfect, and know if you step hard 2 times the pedle falls just off the floor, still stops thow but wont lock them up, these brakes gotta be set up awsome so i can tow the sarg, but like this i wouldnt dare. got any ideas swap the pump or is the hydro boost going out, becouse thats $150.00 pumps $40.00, just wanten to pay the acount down a little before starten somthing else.