i must be completely missing something ?!?

here is a time slip, no bs here.60'= 1.513. 330' =4.552, 660' =7.151@ 94.33 mph. 1000'= 9.403, 1320= 11.331 @ 116.26, 3345 # , shifted at 6500, 7300 through the traps. 340, single 730 carb, hyd cam, 1.88 int valves, they don't slow it down!! btw , it has 14 # flywheel. mcloed clutch.