Gotta get this sorted out!

KnuckleDuster said
Now I need to start tweaking this carb a bit. I set the choke with a credit card size gap fully closed.It runs pretty good, but it seems like it's loading up at stoplights, the idle drops a few hundred rpm. Also sometimes when I let off from 40mph or so it's kind of sputtering.
I've never had a carb with four corner idle adjustment. What is the best way to go about setting it?
From the factory settings, I tried a quarter turn lean on all four and the idle went up, and i backed it down. It seemed like off idle response was quicker, but it acted like it wanted to die if I was coasting. I tried a quarter turn lean just on the secondaries and drove it 15 miles home, but it started losing rpm at the last stoplight, so I m moved it back to stock when I got home.
I don't have any jets yet , but where should I start to try and get it to run good on the street?
Sorry, It has been a long time since I messed with a Holley type carb, and I have much to learn.

Gonna go pull the #1 plug and see how it looks...

Usually...close all idle screws , then turn them out each exactly 3/4 of a turn. No matter where they end up...they all want to be the same amount. Fire it up....see if it idles, if not raise them to one turn out each and try to start it again... If you have a tackometer , for instance on your timing light...once running , put it in gear with the e brake on and a tire wedge....you can open the idle screws a hair more each till the rpm STOPS increasing, there can be a fine line...so pay attention to rpm and also know that sometimes you might want to set them just a hair under max rpm so that you can keep the stink down.
when it comes to jetting...it can be night and day by only one jet size. So with the primaries first...see what stock jets are and go buy 2 sets of jets , let's say they are 71's....buy a pair of 69's and 70's. If it has 75's ...get 74's & 73's.
Put smaller jets in it till it surges a little at cruise, 50 mph & up is a good testing cruise speed., once it surges go back up a jet size (Till it doesn't surge but no more jet then that for now) That will be your leanest cruise you can safely run and will best mileage from and keep the carbon build down. Next you will play with the secondaries, usually you can just stay with the factory size...but chances are they can be a size too big as well, but probably not much more than that.
With the power valve...you want to see what you vacuum is in gear at idle and pick a power about half to 2/3 the vacuum reading you get. That will set you up well and from there you can start fiddling the pump shot or cams.