I am looking at going to -13 heads, 2.35 stainless valves, and am considering just how high a ratio I can go with them . 1.8 intake ratio would put me at . 900 net lift. My Jesel rockers are 1.7, so I will be increasing the net lift by . 051. Cam is a stock core size inverted flank from Jones. Your experiences?

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky