318 tuning question

If the engine has a 4bbl (check), but is still using the 2bbl throttle bracket, and 2bbl throttle cable, then from inside the car, the gas pedal will not open the Secondaries properly. If someone has clamped the cable NOT at the ferrule, this is a dangerous situation. The Secondaries will work, but the KD will not, and it is very possible that the Throttle cable can stick at WOT, which is gunna scare the crap out of you. Find your ignition switch and practice shutting it off.
The 4bbl bracket, brings the cable anchor further forward, but the 2bbl cable is still too short to open the throttle 100% from the drivers seat.
And, the proper throttle linkage on the Holley, needs a LONGER top KD link to actually push the TV lever fully to the back. The 2bbl rod cannot physically do it. |Each part has to be individually inspected for correct operation, beginning with the bracket on the Holley.

A couple of pictures would make short work of this.