Street/Strip Dizzy Curve

In my '65:
170 cid, stock, with lots o miles, and a bad rocker(tick), stock 3.23 gears, stock 904 cable shift trans.
Initial 20°, centrifical 22° (welded up/filed slots), starts coming in at 1500, all in by 2500 (one light Mr.Gasket spring, one factory lighter spring), plus whatever's in the vacuum can. It idles clean at 650, runs high test, has no balls but it's not the timing's fault...lol. It does get some serious mileage tho. I haven't been perfect at calculating but if it's not getting 22-25 with my heavy foot Im surprised.