Cruising RPM. can it be to low ?

Frnknsteen said

From what I have heard, the stall on most convertors is between 1800-2200 rpm. I don't know what effect cruising at RPM's under the stall speed would have. It would be interesting information though, so I will be watching this thread to see what those with more transmission knowledge have to say.

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It depends on how much tq your engine makes at any given RPM under the flash stall.

For example, my convertor flash stalls at 3500. That is at WOT with 550lb/lbs of tq @3500RPM. You put that convertor behind a slant 6, it won't stall at 3500 anymore. Same applys to ay car, when you cruise under the flash stall at low throttle conditions your engine is also making less torque, thus making the convertor act like it is behind a smaller engine. This is the premise of how higher stall convertors work behind OD transmissions in street driven cars.

TO the OP, I'd shoot for the 3.23's and 1600RPM cruise speed.