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Old 06-24-2021, 09:05 AM   #13
1project2many
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Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,158
Re: Flat Out Engineering brake question

Additional Information:

68-82 Vette brake system information:

Power
Caliper piston dia: 1.875" F 1.375" R
M/Cyl dia 1.125"
Pedal Ratio 3.38:1

Manual
Caliper Piston Dia 1.875" F 1.375" R
M/Cyl Dia 1.00"
Pedal Ratio 5.40:1

Many master cylinders utilize the same mounting dimensions as the C3 Corvetter master. It is likely a person could find a master cylinder with a piston diameter closer to the C4 piston size that fits the Flat Our booster. A 1973 Camaro master cylinder for example is 15/16" (.93") diameter F and R.
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