That depends on what signal is used to disengage the lock-up.
One common problem with early 700R4 (and AOD) was the fact that light throttle pressure at certain speed/load/temperature cruising conditions not only unlocked the converter, but shuttled it back and forth (lock-unlock) unless you increased or decreased speed.
If the cam is too big, you'll find that light acceleration will take you out of OD, or be unable to engage it until a somewhat higher cruising speed where a small cam wouldn't, unless you have manual over-ride of the lock-up feature.
