Beefing up A500 overdrive

I didn't post what I did to derail the thread.
That said, I'll just add that I thought it was centrifugal force to get all the rotating parts, well, rotating with the added resistance of being immersed in fluid. The lock up doesn't come on til the trans has shifted to it's highest gear, it's the initial takeoff and power eaten by the trans in getting up to that speed, where the lock up can do its thing
It didn't occur to me that you had. Very fair points. I wasn't considering stick but comparing 727 to 42RH so the only real difference is the overdrive.
The car isn't a daily driver and will mainly do longer journeys so lockup should give a real benefit.