Hello there.. Well, engine is rebuilt in my vette and the rear is now in..Runs well, except with the quick snap of the gas to the floor.. It falls on it's face, and sometimes just stalls. If I ease into it normal it is okay.

This is where I am at so far...350 w/rv cam HEI
Set the idle at 800 rpms.. Set base timing at 8-10 btdc w/advance line disconnected. Installed advance vacume line and it advanced...good..
Took a vacume guage and started with 1 1/2 turns out on each mixture screw until reached highest vacume..Floats as well if the sight plugs are removed and you bump the car a litttle, gas comes out.

Turn the car off and looked down the carb, and slowly moved the throtle..The squirt starts the instant I move the throtle, and seems to be fine.

I tried the adjusting the acc. pump, and I even went from one extreme to the other adjusting too much just to see if for some reason it might correct the problem..

Thought the power valve was maybe blown out since I fired through the carb because I installed 2 wires incorrectly..duhh.

I turned the mixture screws in until they seated, and the car stalled, so I would think the power valve is okay, which is a 6.5 which came in the rebuild kit.

Any more input to where I might be going wrong here?? I work at a Lexus dealer, so any techs feel free to chime in.. If the damn thing had a computer I could get this right, but it has been awhile since I tuned a holley on a 350..ha ha...Oh, and it is a 750 cfm dual feed, single pump carb #3310 if that helps at all. I am sure all the jets, ect are stock in it.

Like I said, seems to be fine if I ease into it, but If I just stomp on it, blaaaaa.
Any input would be nice..Thanks.