Great results! I was surprised to see the size of the outboard main jets. Those are 10 sizes larger than what my 493 with similar sized cam & Indy EZ's likes according to my wideband. I do run the mechanical DC Holley's.
I bet his are .089" and .091" holes in metering plates. That would be about the same as your jet sizes in metering blocks. Decades ago when I raced with the mechanical carbs at least 4 times a week I had three outer metering blocks with 78, 80,and 82 jets. I could swap them at the track a lot quicker than switching jets. Usually ran 78's and 80's on warm days and 80's and 82's on cold days. 64's or 65's in the center.
I don't know if its the the nature of the 6 pack or just a coincidence, but no matter what I run it on, I'll start with 65 center and 80's outsides. Then when I'm all done I'm usually exactly what you describe, 64/65, and 77/82, and does not seem to matter much if its a 350 hp or 550 hp deal.
