[ToyCollector]

Todd, I went out to the garage to get my sheet on where the consensus is with Webers. These numbers work big block or small for some strange reason.

Idle Jet holder 120
Idle Jet 60 most popular, then 55
Main Jet 150 and 160 most popular
Emulsion Tube F7
37 or 38 mm Venturis (aka Chokes in Weber speak)
Idle mixture screw, Inglese say no more than 3/4 out from full in stop, some run 7/8 turn out
For accelerator pump, some change the pump exhaust bleed (there is one per 48IDA at the bottom of the fuel bowl to a #50)

Some people have recommended a F5 emulsion tube to correct 2,000+ RPM stumble.

Float levels should be .165 inches below carb deck surface.

For those that in the future want a reference, my 289 HiPo with good flowing heads has the following:

Idle 60/120
Main 145/F7/210
Pump 50
Chokes 38mm (down from 42...the bulk of my problem)