You do not shift at peak power to make the best times. You want to maximize power across the shift range. Shifting at peak will drop you lower in the power band at the beginning of the next shift. Here are some shift point calulations using my old dyno numbers before the supercharger.
Optimum Shift Calculator by Bowling and Grippo
Input Parameters Are the Following:
Transmission Ratio One = 3.37 to 1
Transmission Ratio Two = 1.99 to 1
Transmission Ratio Three = 1.33 to 1
Transmission Ratio Four = 1.00 to 1
Horsepower = 100 at 2000 RPM
Horsepower = 130 at 2500 RPM
Horsepower = 150 at 3000 RPM
Horsepower = 200 at 3500 RPM
Horsepower = 240 at 4000 RPM
Horsepower = 260 at 4500 RPM
Horsepower = 270 at 5000 RPM
Horsepower = 265 at 5500 RPM
Horsepower = 220 at 6000 RPM
Computation Results
Using the Criterion for Maintaining the Same Horsepower Before and After Shift:
Finding Best Shift Placement Points For Ratio 3.37 to 1.99: Error: Search outside range - need more RPM range in HP table! Finding Best Shift Placement Points For Ratio 1.99 to 1.33:
Found optimum shift RPM at 5882, which achieves 236 horsepower and lowers the RPM To 3931 after shift
Finding Best Shift Placement Points For Ratio 1.33 to 1.00:
Found optimum shift RPM at 5702, which achieves 253 horsepower and lowers the RPM To 4288 after shift
Maximizing the Area Under the Horsepower Curve:
Finding Best Shift Placement Points For Ratio 3.37 to 1.99:
Found optimum shift RPM at 5995, which achieves maximum area under horsepower curve, and lowers the RPM to 3540 after shift
Finding Best Shift Placement Points For Ratio 1.99 to 1.33:
Found optimum shift RPM at 6000, which achieves maximum area under horsepower curve, and lowers the RPM to 4010 after shift
Finding Best Shift Placement Points For Ratio 1.33 to 1.00:
Found optimum shift RPM at 5998, which achieves maximum area under horsepower curve, and lowers the RPM to 4510 after shift