On the extended rod, i felt that I was having to adjust length to improve kickdown response, to where I might be restricting my wide open throttle travel. That actual 4 bbl bellcrank looks like it would respond quickly to throttle, than have plenty of travel as the arm arc changes.
Replacing that bellcrank assembly in the car was a real challenge.
If I had not found 4 bbl linkage, I considered slotting the hole in the Holley bracket, where carb stud mounts, to make that arc smaller, moving that stud closer to pivot point. Or find someone to measure 4 bbl & 2bbl, and fabricate a short metal tab to duplicate that forwrad hook on the 4 bbl bellcrank.
My wife found our linkage on A Body Facebook group.
