You still haven't answered the question unless I missed it,did you do anything with the jetting in the end carbs ? I would "assume" that if you have anything more than a cam with specs close to a sixpack cam,you would be lean as soon as you got into the throttle especially with a 540 cu in motor.
It's interesting, I expected it to be lean as well.
I have 66 jets in the center carb, have not touched a thing on the outboard carbs.
Reading about 12.6:1 at WOT. If thats the case, I actually need to lean it out a bit.
