Actually, above about 30 MPH in 2nd gear, the OD can be engaged as soon as the governor gets up to speed. Then shift to 3rd, use the kickdown to get 3rd. direct, and then back off the throttle to engage 3rd. over. Five speeds! I used to do that with my 1951 Chrysler M-6 trans to use all four forwards.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!