air or fuel, what am i running out of

Glad you got it sorted.

I'm a little late to the party here I guess, I think perhaps some people are getting confused since this thread has made mention of both "302" cylinder heads and "308" cylinder heads.

The general consensus is. 302 aren't the best, but offer a much needed compression bump for 318 engines.

correct me if i'm wrong, but 308 heads have the later style magnum exhaust shape and the original "J" head style large port inlet. These are considered to be the most desirable of the factory cylinder heads for LA engines.

realistically, even the most port-restricted 360 should be able to pull 6000 RPM in SECOND gear if in an optimal state of tune, as should a stock 225 slant 6 2bbl!

I was going to suggest to get an Air-Fuel gauge and plumb in an oxygen sensor to your exhaust, this is always a handy tool for tuning and diagnosis and can be swapped between cars with relative ease.