360 LA installing Promaxx Aluminum heads

Think I'm going to see about a re-calibrate on the wideband 02. At the numbers above she ran tits on a ritz.

I went up one rod size to 60-52 and it was "ok" but seemed off. AFR numbers bumped up a hair. I'd been driving with the 60-50 rod for some time this afternoon so I figured it may just be a me thing.

Bumped up to 62-54... saw AFR numbers 14-15 but started getting lean surge at low load and studdering off the line until it fattened up.

Tossed 60-50 back in and we're running great again. I'll get back on it tomorra and do some more tweaking.