I fought with a carb I had for a couple of months, and finally gave up and sent it in to Quick Fuel. What I got back was so close right out of the box its not funny. I dropped 1 jet size on the front, and went up on the front squirter a couple of sizes, and that was it. No dyno needed, no specialty stuff, just one phone call and some shipping costs, and bingo!

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk