600 CFM vs 750 CFM...

Main Jet: 0.098"
Metering Rod: 75/47
Step Up Spring: 8"
Pump Shot: Max
Initial Timing: 11°
Initial + Mechanical: 36° - 37°
Idle AFR: 13.0 - 13.5
Cruise AFR: 13.5 - 14.0
Power AFR: 15.0 - 16.0
WOT AFR: 12.5 --> 12.1

My current plan is to switch to a 75/37 metering rod.


7milesout

.. your a/f readings look good and it's best to error a hair on the rich side.If your calling light to medium acceleration "power" 15 is normal ..your getting lots of air without much gas.
.. try adding a bit of initial timing, if it helps you may need to re curve your distributor.