Gas pedal throw issue

The farther away from the throttle shaft of the carb you attach the throttle cable, the less the carb will open with any given amount of cable travel. You have to picture what's going on: you have a throttle lever on the carb, pivoting about the carb throttle shaft at the bottom. As you pull on the throttle lever with the cable, the cable attaching point moves in an arc, not a straight line, no matter where you attach it. Attach the cable close to the pivot, the arc is short, and a very small distance of cable travel will move the throttle many degrees. The farther away you attach the cable, the larger the arc, and the fewer degrees the throttle shaft will turn with a given amount of cable travel. That's why WHERE you attach the throttle cable on the throttle lever is so VERY important to get full throttle opening. Don't know how many jerry rigged setups I've seen where you know that the carb can't fully open. Easiest way to ensure proper throttle opening is to use the Holley or Edelbrock Mopar carb adapter referenced above.