I am pretty sure the Wallace calculator is all based off data he collected for Pontiac race car. If you race a Pontiac with a similar drive train and similar hp/weight ratios that the data is based on, then the results are close. You plug in data for a flyweight Fox, it all falls apart.
dyno 304 RWHP, race weight 3080, shift 5,800RPM, 26" tall tire, 4.10 gear
What Wallace calculates:
Power to Weight Ratio: 10.13
60 Foot E.T. : 1.75
1/8 Mile E.T. : 7.95
1/8 Mile Trap Speed : 85.47
1/4 Mile E.T. : 12.60
1/4 Mile Trap Speed : 106
1/4 Mile Trap RPM : 5,637
Real time slip
60ft 1.565
330ft 4.746
660ft 7.447
MPH 90.86
1000 9.775
1320 11.756
MPH 113.28
So Wallace is definitely not calculating based on RWHP
Plugging in an estimated 375 FWHP has Wallace calculate:
Power to Weight Ratio: 8.21
60 Foot E.T. : 1.63
1/8 Mile E.T. : 7.42
1/8 Mile Trap Speed : 91.66
1/4 Mile E.T. : 11.75
1/4 Mile Trap Speed : 114
1/4 Mile Trap RPM : 6,046
Bottom line, the closer your combination is to the combo he used to generate his data the more accurate the results.
