Stock setup is 15/16" bore. '81 and up is a step-bore 15/16". The short larger bore (I think about 1 1/4") is to take up the slack in the low-drag metric calipers before they apply pressure to the rotors using the smaller bore.Would this be Overkill for a stock set-up?
Not trying to de-rail the OP. Just curious for informations sake?
Stock setup is 15/16" bore. '81 and up is a step-bore 15/16". The short larger bore (I think about 1 1/4") is to take up the slack in the low-drag metric calipers before they apply pressure to the rotors using the smaller bore.
78-80 uses a different master than 81- and up
Has anybody used the ACDelco 18M974 with the 12" dual diaphragm booster (b-body booster upgrade)?
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