This car always had poor braking ever since I got it. I overhauled every part of the system and no real improvement. The diaphragm ripped in the booster one time and the brakes were VERY scary then. (Both feet on the pedal and could not get close to locking the wheels!!)
So before I removed the booster, I put the brake gauges on the calipers to see what kind of pressure I was getting and only got abt 500 psi - which is way low. Then when I pulled off the booster, I suddenly realized that the linkage at the rear of the booster cut the brake force in half compared to a manual brake setup!! That may be OK if you have really good vacuum to the booster, but with the cam I have, my idle vacuum was less than stock.
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To increase the brake force, I'm going to modify the linkage to move the connection point up closer to the booster rod connection.
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I made a paper template to get an idea of the mods I needed to make.
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