bjuice

i think your dead on with the 650 cfm from what i hear..
By the way how loose is your converter and how much gear ya running ?


At minimum i would look at bumping up a jet size with the 650 cfm and having it a little fat on the NOS passes.
i had a 1000 cfm Barry Grant "Silver Claw" on a 406ci in my Bug in 2003..and i had her a little fat when i put the plate on her.


just a quick story.one of my cars i drove to high school in the early 80's was a 70 camaro with 4.10 gear...350ci with steel crank, a set of steel doule hump 300 hp heads...for those of you that remember AUTO SHACK...i bought a Alliance cam ( hyd lift anti pump up lifters)...460 lift

I Ran a converter out of a Vega...loosy, goosy..


to get to my point, i put tunnel ram on the car with s pair of 465cfm Holley carbs....

It ran like BAT OUT OF HELL....i was the fastest thing around ( street) in 1980-thru 82...

would drive car to local strip 1 hour away run the gamblers race..and drive home...under $10.00 worth of gas...

the car ran low 7.90's (1/8th) spinning,,street tires and thru mufflers..
from a roll on the street it was a JET.

on the way home the tunnel ram would start frosting up so much i would have pull over and wipe off the windshield from the frost blowing back to the windshield like it was raining.


ahhh ...the good ole memories...sorry i just got caught up in them...

bottom line even with this set up less was best in the carb department.

8)