I have a question on what would be the right bore size on the master cylinder for my C4 conversion. I will be using the stock Corvette calipers from a 90 Vette. The master cylinder I have now is for front disc and rear drum brakes, 1 1/8" bore with a 7" booster. All this came with the dropped spindle kit a bought from Auto City Glass. The spindles are McGoughys. (The brakes never seemed to stop the car as well as they should with this set up, better than the front drums but not by much). The stock 90 Vette master cylinder which also has a booster (ugly black Plastic) is only a 15/16" bore master cylinder. I'd like to use the 7" booster I have since it fits nicely in the space available but not sure what I should get for a master cylinder because of the small bore of the stock Corvette MC. I thought power brakes needed a bigger bore.
Any thoughts or help would be greatly appreciated.
Brian