400r od switch
Okay< I know this is a cheap way out, but here is what I did with a set-up I was running a while back.
Same story, 455 olds with carb and 400r trans. Of course it would not lock up without the proper ECM.
So I wired the lock up wire #### No laughing now#### To an old floor mount dimmer switch with a pilot light to tell me when it was not in lock up.
It was lotsa fun when cruzin at around 50 mph and some guy in his Jap Crap tried to fly by me.... With a little practice you could stomp the 4bbl open at the same instant that your left foot stomped on the switch to drop it out of OD. The flippin thing would just leap and accelerate like a rocket, leaving the Jap Crap driver looking stupid and confused as he watched that old turtle top pull away. I really enjoyed burning off Mitubitsi 3000 GT's..... Heee Heee!