Isky 270 Mega Cam P/N 390171

I'm running an Isky 280 Mega circle track in my 410. On a 106 LSA (in at 102°) 280° adv, 232°@ .050", 68° overlap,.323" lobe (.517" w/1.6 rockers) Vacuum I get about 13" hg at idle in park, 11" hg in gear, idle at 900 rpm in park/gear. Runs in the low 12.2 range +/- happy with it, but want more!