Not enough rear disc brake pressure

[Apogee]

Originally Posted by 455bird

Is reducing the piston area on the front calipers acceptable for performance driving? Or, is more piston area better? As for the rear calipers, the S10 units have 2.80 sq. in. of area (48mm single piston) and assuming a 65/35 percent front to rear balance, then I would need a rear caliper with approx. 3.6 sq. in of piston area to balance, if I keep the D52's on the front. A mid 90's caprice with rear discs used a PBR single piston 54mm caliper. The rotor width and diameter were the same as the S10. Do you know if the caliper will bolt up to the S10 bracket?

Runing balanced calipers front to rear would be best for performance driving, calipers with smaller piston areas just operate at higher pressures to achieve the same overall effective brake torques. The traction your tires have should be the limiting factor, not your brakes. Bigger piston areas create more clamping force for a given caliper pressure, however require more volume and therefore larger bore MC's...6 of one, half dozen of the other, it's the same thing in the end.

As for your question concerning the S10 and Caprice/Impala SS rear caliper interchangeability, I have no idea.

Tobin
KORE3