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Small, high RPM, peaky motor will have a larger ET loss than a big, low RPM torque motor.......

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High RPM peaky motors need more gear as witnessed at the track for many years and my actual expereinces in changing rear gear ratio in my 518 C.I. low deck stroker motor. My Duster with the 518 motor ran almost identical ET and MPH with 3:73,3:91 and 4:10 using the same converter It seemed like it spent a lot longer time in third gear and the motor seemed lazy with the 3:73 versue the higher ratio but the time slips where the same IHTH