Unported head quickness?

66 Cuda 3250 lbs with driver, 170 slant six stock short block, unported milled head .100, 340 valve springs, and a .434 lift Crane cam, stock 1bbl intake modified for a 500 Holley 2bbl. headers, Msd 6a, 8 inch PTC converter, 3.91 rear. 16.5x in the quarter on motor.
13.102 at 100.65 mph on spray