I have a 1968 with disc brakes and relative new calipers.
This is probably the fifth master cylinder I have put on this car in 10 years. I am wanting a stronger brake. It seems as each time I replace the MC the brakes are fine and have good stopping power for a few months and gradually return to a spongy pedal and the brakes won't stop as well. I am stopping a 427 hp. Actually 467 dyno hp
I have done all the proper bleeding etc.
I recently was told by a hot rod mechanic shop that they will use a 7/8 bore rather than a 1" bore on the MC to get better stopping power on their hot rods.
I thought about going with a booster brake, but they said I only have 6" of vacuum because of the Cam. They also said to covert over to the DOT 5, with less chance of moisture.
Does all this make sense? Is there another way to go for lasting brakes.
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