On my 470 the QF 1050-AN (annular boosters) worked much better than the Holley 850 and 950 that I tried. The 950 was converted to annular boosters which improved it significantly, but the QF 1050 was still the best carb.
However, this is just dyno testing where we run the engine from 5000 to 7000. The carbs could behave differently on the street or the track. On the dyno we don't really have a way to test "driveability" issues.
My point finally strikes gold.............
a 5000-7000 dyno pull in no way even touches on street drive-ability or low speed manners just like the one you sold Brad I tested. Couldn't even do a burnout no joke but after working the idle, transition and cruise, it's drive able.......And personally hearing about 4150's on Big blocks especially making even 500+ deserves a Dommy especially a 572 like someone mentioned..........CRAZY and leaving a LOT on the table no matter what you heard or read..........PROVEN every day........
