1) Are your Transfer and Idle ports synced up?
2) Are your secondaries shut up tight,yet not sticking-tight?
3) Are you running fresh,cold air to the carb?
4) Or is she sucking that hot underhood air?
5) What are you running for timings, and idle rpm?
6) What do you have available for fuel in your neighborhood, and what fuel are you using?
7) Is your PCV hooked up?
The stock 340 pump can put out close to 7 psi.It ran the AVSs and the TQ.
The stock teener pump can do at least 4 to 5, into a 2bbl.
