Got the new bracket installed on fabbed up bracket base i made. So i could get extra slack out of throttle. It opens secondaries almost to WOT. But now pedal doesnt touch floor about 1 inch or so off floor fully depressed. Throttle does close fully when let go of pedal tho. So im guessing gonna have to get TA throttle cable that was mentioned up above. Unless someone has anymore ideas.
I would try a different mounting hole on carb bell crank. Shorten the travel up needed to open blades fully....
Fwiw, the 350-4 cables are the same for '68-71 but '72 is a different part #. I don't know they physical differences but...