respectfully,
your history shows you never respond to your Q's, and since we don't know what kind of 650 this is and no idea what vehicle it's on, we have no choice, your on your own with the following info you need.
----
for specific adjustments and fine tuning procedures, take the number off the air horn and plug it in here,
http://www.holley.com/TechService/Instructions.asp
holley does a flow check, but all other adjustments must be checked prior to and after install.
floats are free to bounce around during shipping. jetting, accelerator pump, fuel mixture, and cold start are all typical to the engine config it's on.
check your timing and t-gears as well.
How adjust a carburetor. ?
Linear Mode
