May I interject a question here? Years ago, the plumbers working at the local dealership got my engine so screwed up it would barely run. I could not get kickdown.
Later, after getting the valves and timing properly adjusted, the car downshifted at about 30-35 mph without flooring the accelerator (and still does today). Is the downshift partly a function of the power the engine is developing or just what would cause what I experienced?
Can't help wondering about this. Thanks for your expertise.