The master is different, sort of. If the bore is the same you can convert the firebird master to four wheel disc. Where the rear brake line goes in to the master there is the flare seat. If you pull the flare seat out there is a check valve in there to keep the rear brake shoes from fully retracting when you let off the brake to maintain good brake pedal. Use screw like a drywall screw and thread it into the hole of the flare and pull out the flare, remove the check valve and reinsert the flare and now you have a four wheel disc master. Again though make sure the bore size is the same before you go through the trouble.
__________________
1978 Black & Gold T/A [complete 70 Ram Air III (carb to pan) PQ and 12 bolt], fully loaded, deluxe, WS6, T-Top car - 1972 Formula 455HO Ram Air numbers matching Julep Green - 1971 T/A 455, 320 CFM Eheads, RP cam, Doug's headers, Fuel injection, TKX 5 Spd. 12 Bolt 3.73, 4 wheel disc. All A/C cars
|