Need Help Tuning The 465 Rb Prepped Monster. Not Feeling The Secondaries Open Up Anymore. Pretty Sure The Mixture Screws Are Way Off. Wasting Way To Much Gas Through This Setup. Its On A Rb Holley Intake, 12a Stockport 83, No Header, No Fpr, Facet Pump, New Oem Filter, Revvs Stop At About 5500 Rpms. Gets There Quick, But Then Sputters And Stays, Any Steps To Follow Advice Is Appreciated.

 

use the screw trick to open up the secondaries, search the forum for it, its pretty common to use on any carb actually.

you are going to need a fpr aswell. what kind of shape is the carb in?

as for the mixture screws, get used to adjusting them fairly often, pretty much whenever the weather changes.

g'luck