200-4R TV cable

[davepl]

So I've had little luck finding a TV cable adapter for my BBC that works with the linkage the big block trucks have (which is short to clear the intake or everyone I've had uses a manual trans carb or has been cut).

Anyway, just a random question: if the TV cable is set correctly so that it shifts at the right point, can it be wrong? I understand the pivot point may not be linear (might be progressive) but it feels like if it were too 'loose' it'd shift late and too 'tight' it'd shift early, since shift point is determined by TV pull, or it sure seem like it when you've got it wrong, anyway.

Do you think this theory holds? Or could you have it where it shifts at exactly the right RPM and load, but it's actually still wrong and your pressure is wrong and you're going to grenade it?

Thanks!
Dave