Re: Poor brake performance after Wilwood install
I get by with those D52 Wilwood replacement calipers on 12-inch rotors with 12 inches of vacuum, a 9-inch booster, a manual proportioning valve, and an ugly Cadilac 18M95 master cylinder. Slightly better than the common GM big single piston calipers were. If I had 19 inches of vacuum they would be better than they are. The pads they come with aren't much fun when they are cold, and they do put out a lot of dust.
Tom M has a good point about the hidden costs associated with making bigger over-priced aftermarket brakes work.
'65 Chev El Camino
Edelbrock Pro-Flo 4 MPFI
Global West, QA1, Viking, Wilwood, UMI, ProForged
'68 P-11 Norton