360 LA installing Promaxx Aluminum heads

Playing with the tune today.. that wideband 02 sensor has paid for itself many times over.

So after the refresh she's running a bit fat. Carb is a Holley 625 Demon vac secondary.

Idle is high 11 to mid~12:1
Cruise High 12, see an occasional 13.
WOT 10:1

Swapped out metering rods and got the AFR better.. but not quite there. Will need to swap in a smaller primary jet tomorrow. Likely have to go at the metering rods again too after the swap. Hot again today and I probably burned 1/4 tank of gas. Hopefully wrap the carb tuning up tomorrow in time for a drive to the lake.