Corvette brakes were the hardest to bleed without a power bleeder. The manual shows You what play the rod and master should have. Too tight and the brakes will grab, and to loose and the brakes will not have full power. It does depend on the amount of vacuumn the engine has. My brakes would fade from the factory at a high speed stop because the L72 did not have enough. A vacummn pump would be a good choice. Willwood should have the answer. NICK L72