In theory, maximizing the hp under the hp curve should yeild the best et and mph. This theory works well with my cars, but I have a stock torque converter. I think this theory breaks down with higher stall race converters when the motor is back into the converter at the shift recovery rpm. The cam LSA and ICL probably play a part as well, and mine are not conventional..

Your shift/shift recovery rpm ratios are 0.61, 0.64, and 0.71 for 1-2, 2-3, 3-4 gear changes respectively.

With that, assuming you have a tight converter, I'm in the 5700-5800 camp at least for 1-2, and maybe 2-3. The 3-4 shift.might be 5400-5500. That's just eye-balling the graph and pushing the shift recovery hp up close to the shift hp.

This has played out pretty well on both motors I had in my charger with a torqeflite (0.59 and 0.69) . My 508 peak power was about 5600, but after a bunch of track testing, I shift 1-2 at 6500, and 2-3 at 6200.



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