360 LA installing Promaxx Aluminum heads

Pulled #1.. think this tune is a keeper.

I put the 60-50 back in and gave it a lil more juice on the curb idle for low speed/throttle situations & it seems to have done the trick. No more light throttle leaning so far. Looking at the plug I could probably back the curb idle screws out another 1/4 turn.. AFR reads 12.5-13 at idle. I'm not seeing it that fat on the plug and she idles great. Seeing 11-12 AFR around town leaning on the throttle part load.. 13-14 AFR on the highway. Heat range looking good too.. just 2 threads. Timing mark showing up now as well. I could probably add another degree for mileage and crap pump gas.. but I'll stick with the safe play where it is. Almost forgot.. AFR is still saying WOT at high 10 & 11's.

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Cut the shell off that one and measure the fuel ring. If it’s over .100 wide the A/F meter is correct and it’s rich. That ring should be .060-.080 wide and no more than .100 wide.

How pig rich do you think it would be if you turned the plug brown???

Edit: I keep forgetting to ask if your distributor is locked out. If it’s not it must have a very short, fast curve.