Sounds like the wrong base gasket.
Or float set to high.

I'm going to agree with everyone else. It's most likely a vacuum leak, just because everything is new doesn't mean anything. Do as others have suggested and I bet you will resolve your problem. Good Luck!

I hope it is justa vacuum leak. I called all over for a new carb and i swear there is a carb shortage right now lol i just got off work so im going out now to pull the carb and check all my gaskets and tourque settings on everything. Summer is almost over and i just wanna go out on this thing, its such a beautiful boat. How do u post pics on here i wish u all could see it.

In all seriousness...I chased a vacuum leak on one of my Vortec Chevy's I put together for my boat until I discovered that I had a sand hole in the number 8 intake runner. I'm not saying you do and it has never happened to me in 45 years experience...but it happens. I replaced the intake manifold with another one and the problem went away.

Keep an open mind.

don't the vortec's use plastic spacer with orings. remember some gaskets don't cover ports properly, bottom side leaks,

Well looks like i found the problem. I ussually dont let ppl help me cause when they do they say they tightened the carb down and didnt lol. Please god i hope this is the issue. Put a new gasket on tightened down correctly pulled it out on the drive way amd started her. Was able to get it to idle down to around 750 800 ish. I think once i get it in the water a little more fine tuning i cam get down under 700, which is where i would like to be. I got the timing down to 8 dbtdc. I think i need to play with the air fuel screws once i get it in the water to get it just right. I still want to get a new carb with an electric choke since i cannot run the divorced choke with my vortec intake. I think that would help with the hard starts. With all the money i spent this season thus far if i can get this quadrajet to last i will upgrade in tje off season, along with new exhaust. Thank u everyone for all ir help this site is great. I really appreciate your time

I also try to do everything myself. I have had similar experiences with people "helpng". Hope the simple fix is all it was.

Jeff

BTW, are you going to the old school reunion saturday at Brownies? I should be there with my Scarab.

i have a holly on my boat and have not needed a choke in the summer for over 25 yrs...you really dont need it,,i pump twice and she fires,,i set the throttle for 1200 rpm's for a few minutes and im on my way..

Sbslinde whats the old school reunion