Is the Corvette master you're using meant for disc/drum or disc/disc?

If you're not getting the brakes locking up with your rear drums, discs won't help the matters. Sounds like you've got to have an expert look at your system.


1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket