Ok here is the run down.
99 K2500 with a 7.4L
Originally Hydroboost with 3/4 ton master cylinder, and IFS
Swapped in a 79 HP 60, dual piston calipers, all is good.
Swapped on chevy 3/4 ton rear calipers for disc swap, all is good.
Round 2-
Went to rockwells drum brakes, low pedal but firm, not great but it would stop.
Round 3- The fun part!
I didnt like much about the truck, so I swapped in a 86 ford hp 60 with dual piston calipers, and a rear axle from a 2002 chevy with dual piston calipers. I removed the hydroboost due to leaks, and I didnt like the steering and brakes sharing the pump. ABS was also tossed out.
Currently it has a vacuum booster from a 1998 suburban, and the matching master cylinder (1/2 ton brake system). Front brakes are hooked to the large reservoir side (Closest to the brake booster.)
I have a low, soft pedal, and cannot lock up the tires (37's)
All brakes are straight off the master, no prop valve, or ABS.
Booster is working good, Master cylinder is off my toyota, worked good on there with a 3/4 ton chevy calipers front and rear.
On a test drive, all 4 rotors are getting warm, more heat in the fronts than rear.
I have already tried a 2002 2500HD chevy disc/disc master (originally off a hydroboost truck, but it may have been hooked up wrong, I had the rear brakes on the rear of master, closest to the booster, and the front on the front. It shares the same reservoir so I didnt notice when it was hooked up.
My wifes truck has the same booster, master, and rear axle. Instead of the ford dual piston calipers up front, it has gm 3/4 ton. It has great brakes with 40s.
So any ideas? What master do I really need?
P.S.
I still have the original 3/4 ton master from my truck I can try as well.
(If really needed I still have all the hydroboost too.)
99 K2500 with a 7.4L
Originally Hydroboost with 3/4 ton master cylinder, and IFS
Swapped in a 79 HP 60, dual piston calipers, all is good.
Swapped on chevy 3/4 ton rear calipers for disc swap, all is good.
Round 2-
Went to rockwells drum brakes, low pedal but firm, not great but it would stop.
Round 3- The fun part!
I didnt like much about the truck, so I swapped in a 86 ford hp 60 with dual piston calipers, and a rear axle from a 2002 chevy with dual piston calipers. I removed the hydroboost due to leaks, and I didnt like the steering and brakes sharing the pump. ABS was also tossed out.
Currently it has a vacuum booster from a 1998 suburban, and the matching master cylinder (1/2 ton brake system). Front brakes are hooked to the large reservoir side (Closest to the brake booster.)
I have a low, soft pedal, and cannot lock up the tires (37's)
All brakes are straight off the master, no prop valve, or ABS.
Booster is working good, Master cylinder is off my toyota, worked good on there with a 3/4 ton chevy calipers front and rear.
On a test drive, all 4 rotors are getting warm, more heat in the fronts than rear.
I have already tried a 2002 2500HD chevy disc/disc master (originally off a hydroboost truck, but it may have been hooked up wrong, I had the rear brakes on the rear of master, closest to the booster, and the front on the front. It shares the same reservoir so I didnt notice when it was hooked up.
My wifes truck has the same booster, master, and rear axle. Instead of the ford dual piston calipers up front, it has gm 3/4 ton. It has great brakes with 40s.
So any ideas? What master do I really need?
P.S.
I still have the original 3/4 ton master from my truck I can try as well.
(If really needed I still have all the hydroboost too.)
