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SignUp Now!If you buy the spindles for $50.00, new hub bearings (SP450300) are $200.00 each, Wagner loaded calipers (L134303 & L134304) are $75.00 each, plus $50.00 core. About $750.00 total. This is why we buy "old used crap". You can test the hub bearing, rebuild calipers, it`s cheaper.
I did a search on Summit and it appears that Wilwood setup is not DOT legal, so I would say its not for the street. I'm under contract negotiations at work, and when I get my retro check (if that ever happens), I am going to spring for one of those BAER brake kits that Jack Cotton sells.
Still interested in those wheels?
If you buy the spindles for $50.00, new hub bearings (SP450300) are $200.00 each, Wagner loaded calipers (L134303 & L134304) are $75.00 each, plus $50.00 core. About $750.00 total. This is why we buy "old used crap". You can test the hub bearing, rebuild calipers, it`s cheaper.
I just ordered the ssbc calipers for $370 to my door. I have cross drilled rotors already. Thinking this made a little more scense for me.
Have you had a chance to put on the ssbc calipers yet? If so, do you recommend them? I need to do an upgrade before racing season starts and I was leaning towards this upgrade but never seen anyone mention anything about them on their car.
Let me know as I want to buy these if you receommend them, thanks!
Dannyo
Yeah, yeah, yeah, Impossible you say? The hydroboost stops the car much quicker, which reduces rotor heat.The hydroboost allows the turbo to spoll up 22lbs of boost with your foot on the brake. With the Hydrobost, you can haul the car down from high speeds, safely. Someone recommended other rotors to make up for the lost pressure from a vacuum booster conversion. Exactly. Lost pressure. Pressure is what stops the car. If the car will not stop when the rotors are cold, then what good does it do to drill holes in the rotors? All disc brakes require double the pressure (over 1200psi) to operate effectively. The vacuum booster needs vacuum, and the turbo charged 231ci. G.N. has very little. Without vacuum, the vacuum booster only puts out 500-850 psi, depending on how hard you can push. Power brake units have a control valve that opens with your foot on the brake pedal. Opening the control valve allows the booster to apply the brakes. The booster applys the pressure, not your leg muscle. If there is no vacuum to pull on the diaphragms. there is no booster. You are building brake pressure with your leg muscle. There is no "magic" disc pad. It just comes down to pressure. Installing larger wheel cyls raises the pressure against the brake shoes. Installing larger caliper pistons raises the pressure against the pads. It is Line pressure (psi) multiplied by the square inches of surface area of the piston. Most of the street rod guys have more horsepower than they have brakes, Can they hold the throttle wide oipen all the way thru second gear with complete confidence on the street. No. They know they can't stop, so they hold back on the throttle. The G.N has the same brakes as an S10. Pads, shoes, calipers, etc. The difference is the S10 has the same vacuum booster as a stock Regal. The G.N is a heavy and fast car (maybe a 1000 lbs more than an S10?), and at 100 mph, S10 brakes are not much to stake your life on. The S10 has more stopping power than the G.N! Why? The S10 has enough vacuum to operate the vacuum booster! During the gas shortage of the 80's, horsepower was already a thing of the past. The G.N. was G.M's last harrah as far as performance was concerned. They downsized everything they could on that car. The G.N owners are always trying to put more horsepower back in the car, without putting in an equal, or better, amount of brake horsepower. The hydroboost has the performance to match the car, and will deliver the pressure to any combination of calipers you can fit to the car. It has enough pressure, (with no vacuum) to expand the calipers.
Smaller piston sizes increase pressure, but travel farther. Larger pistons push out more fluid volume, but are harder to push. The hydroboost can push master piston sizes up to 1 5/8". Usually a 1 1/8th piston covers everything except Baer (Corvette) calipers. They work best with 1" masters. The stock G.N's had overdrives and F.I. They ran at 1200-1300 rpm on the highway. The pulley speeds had to be set to run accessories at that speed. 6500 crank speed spins the p/s pump about 10,000rpm (est) Alt speeds are about 4 times crank speed. At 10,000 rpm, the pump vanes can not suck in p/s fluid. and the pump and H/B will lay down. The crank pulley must be reduced in diameter to slow all the accessories down. There is no need to run them at high speeds. The hydroboost will hold that car. You did not say what year the Firebird was, but we have a H/B for it.
Smaller piston sizes increase pressure, but travel farther. Larger pistons push out more fluid volume, but are harder to push. The hydroboost can push master piston sizes up to 1 5/8". Usually a 1 1/8th piston covers everything except Baer (Corvette) calipers. They work best with 1" masters. The stock G.N's had overdrives and F.I. They ran at 1200-1300 rpm on the highway. The pulley speeds had to be set to run accessories at that speed. 6500 crank speed spins the p/s pump about 10,000rpm (est) Alt speeds are about 4 times crank speed. At 10,000 rpm, the pump vanes can not suck in p/s fluid. and the pump and H/B will lay down. The crank pulley must be reduced in diameter to slow all the accessories down. There is no need to run them at high speeds. The hydroboost will hold that car. You did not say what year the Firebird was, but we have a H/B for it.