70's and 73's. Hmm, does it have the power valve in?

Is this off a rotary? If so, I would think the PV is plugged? Check between the jets on the primary side, if their is a spring, valve thing, brass color that is the PV, if there is just a solid peice, brass color again, it is plugged. I would start out with something leaner, but could always run it like that too see how it runs. I would say start around 60's, with the PV plugged and have the idle mix screws 1.5 turns out, just for a starting point.

I would rather be a "Smart Ass" than a dumb ass ! ! !