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Once again, it's all about the governor and the axle ratio.

A trans with a Hemi governor and and 3.91 gears might not 3-2 kickdown above 70 mph while the exact same trans with 3.23's might still kickdown at 84 mph. The governor only knows the rpm of the output shaft, not the road speed of the car.

84 mph in 2nd gear with 3.23 gears is around 5000 engine rpm, within the limits of the Hemi governor.




A&A transmissions sell many Governor Kits from 5000 to 6000+ rpm...
They have 2 different Hemi governor kit 5400 & 5600 rpm.
As per shop manual Wide Open Throttle 2-3 Upshift with 3.23 Axle Ratio can be at 93 Mph must equal to around 5800 rpm.
Logically I must order the 5800 Rpm Max Wedge governor kit to upshit at 93 mph and kickdown at 3-2 kickdown at 84 mph.