Originally Posted by bee1971
4640 is a 750cfm Carb - 440 HP

Nothing wrong with that carb especially if it’s in good shape and you want to install the flat metering rod covers , and then convert to the Edelbrock metering rods/jets



.101 Primary Jets - .065X.052 Metering Rods

.107 Secondary Jets makes for a good start

That jetting combination is way to rich for my motors , especially on the secondary tsk I would find the stock jetting and then maybe make the metering rod .002 to .005 thinner on the top step scope
As far as converting a AVS to use AFB parts that may be the only way you can use for tuning in today world if you don't have a Carter tuning kit for the AVS carbs whiney
I'm lucky that I have two boxes of Carter jets and metering rods from back in the day when you could get parts form Carter at the drag races for free boogie grin
OP, PM me on what your current AVS rod numbers are, I may be able to help you on getting some different ones for tuning your carb., maybe not though with out knowing what you need shruggy
I sold all my AVS carb. cores yrs ago realcrazy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)