Weber Jetting Survey

[*13*]

My setup on a 289 (294CI) is:
48IDA WEBERS
Choke 37mm
Idle fuel jet 65
Idle jet holder 120
Main fuel jet 150
Air Corrector 120
Emulsion Tube F7
Accel. Jet 50
Screws set at 3/4 turn
CAM
Lift .468/.462
Duration @ .050 229 / 236
Lobe Separation 112

Sorry for the late add on this. It's something I've been meaning to get to for some time. I just changed out my MAIN & IDLE jets & the car is running a lot better. I will likely need to change out the air correctors, but at least I've got her within range now. This thread has been helpful, thanks guys! Someone should post a database only, without commentary, spreadsheet? The commentary is also very helpful. Would just be nice to see all the numbers side by side. The one thing I would add & reiterate here is that matching the main Jets to the Venturi's should be the place you start with these carbs. If you look at all the numbers people have posted here you'll see that this is a fairly consistent value. The the main jetting vary a size up or down from this but for the most part they have a pretty tight range. Like a Holley 2 or 4 barrel, there is only some much fuel that can be sucked out with a specific venturi size & oversizing the jet beyond reason really isn't going to get you too far. Picking your idle jets is fairly easy from that point, just go back to the list here & make a guess based on what you see. You should be pretty close. Second thing I'd do is get them sync'd up. At this point you should be ready for fine tuning. Hope I'm not over stepping anything here. Just a lot of back & forth info when you read up on these carbs. It gets so confusing that you feel like you might need a 4 year degree in webers before you start. If you understand the principals of a carburetor I believe this multiple carbs is just the next step & Webers are just a carburetor. Use "carburetor common sense" & you should be able to handle it.