The hydraulic pressure between the driving piston and driven piston is C I'll call the force on the driving piston from the brake pedal lever A It also needs more piston travel to transfer the same volume of fluid as a larger piston to the driven cylinder. There is a difference in manual and power brake footfeedsĪ manual master cylinder needs a smaller driving piston to get more hydraulic force multiplication (pressure) to the brakes through the driven piston (wheel cylinder). There is a difference between manual and power assist mastercylinders. There is no difference between the 2nd generation f-body 4wheel disc master cylinders and the disc/drum mastercylinders. It is setup as 4wheel manual disc brakes. I have the factory setup on my 71 firebird. Here is a diagram of the caliper bracket with dimensions to cut your own from plate that can use the FACTORY ORIGINAL firebird/camaro parts.Īlso here is a pic of the original brackets from a 1981 10 bolt disc brake rear. They also have the newer style GM calipers, conversion kits, and parts for other makes. The 1977 eldorado parking brake calipers and other parts needed are available new without core from: If you would like to use 77-81 gm Firebird or Camaro rear disc brakes on your rod here is some vital information to create your own kit from scratch.
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