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Old 04-07-2012, 12:15 PM
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Does the truck stop in a straight line? Does it stop as it should as far as distance? If yes to both, probably OK - but ...... those calipers may not be matched as far as fluid capacity with the fronts (whatever they are). If you have a 1" piston in the fronts, it will take less fluid to move a distance then say a 2" or multiple pistons on the rears. A proportioning valve will only modify the pressure about 55-60% so wide open - no change. As far as percentage of braking - a pickup may be as bad as 70/30 though 55/45 or 60/40 would be normal. Using wear as your indicator - the backs on my '31 with identical Wilwood calipers on all four corners show no wear with just a minimum of markings on the rotors
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