I agree a 650 CFM is large for a 292. I used to run a Holley 390 CFM, Model R8007. They are a little spendy now. [I paid $89 new in '78]
Currently I run an Edelbrock 500 CFM on my Offy 4Bbl intake. I'm in Tucson AZ so I don't need carb heat.

I/I #4101
'71 GMC Jimmy 350, sm465, np205,3.73 posi.
'68 C/10 Stepside 292 (.030 over) Offy Intake, 500 CFM AFB,Clif headers, sm465, 3.73 posi.
'67 K/10 454 project.
'72 K/5 rolling frame project.