I would guess a smaller diameter nozzle is needed or maybe a single carb feeding 6 cylinders .

Running 14.7 A/F with no turns on nozzle is very rich.

I'm suspecting it's even worse than you imagine... From your other thread, you set the needle depth using the "jet-push-piston-home" technique (which isn't the right method BTW) and ran the car like that with no turns down on the nozzle?

If that's the case, then that means you were actually idling the car with the needle shoulder pretty much resting on top of the nozzle. The only reason the car even idled at all was because the needle shoulder was mostly capping the nozzle hole. The tapered part of the needle wasn't metering the the orifice... The shoulder was.

I'm gonna check the fiche to see if all years call for the same nozzle P/N.

I have seen this kit for sale and it said it was for the 1973/74 carbs.

Mark

Yup. That's why I bought one. I was working on a 74 at the time. But.....

They were wrong. It wasn't for 73/74, it's for earlier.

And the needles are wrong for any year.