good luck, thanx for the consideration...
Yes, we were working on that. Idle mix seems to be right, we have the mixture screws at about 2 1/2. Question, would the Power valve size make a huge difference? I have a 6.5 on it now, but some places I looked up say it should be higher.sounds like idle mix. remove air cleaner, hand over air horn. does it speed up or slow down. if it speeds up you are lean. if it slows you are rich
Ok, I think I am going to re-evaluate the vacuum leaks. I am going to close off everything that is not required. I did go to Rod's Carbs and get a new throttle rod, since the current one seemed to have too much play, and was causing some vacuum issues we believe. The new one is much better, with a tighter fit. I am hoping this will alleviate part of it, or maybe all of it. Thanks again for your expert advice.venturi size has no effect on idle. your idle speed is likely a vacuum leak. if the throttle plates are closed, idle speed is now controlled by the amount of air entering beyond what is going through the venturi
Well this intake has been on it for a while, I cannot imagine this had a vacuum leak prior to this project, with no issues on the old carb. I am using a Summit phenolic 1" spacer, and the gaskets are a perfect match both top and bottom of the spacer. It has a barb for the PCV valve, I am plugging that now while I test (Bought a vacuum tester so I can actually check it instead of just eyeballing the lean/rich issue). So that is what I am working on Friday.Getting the 4100 to match up with Edelbrock intake without leaking can be tricky. What spacer are you using?
Another possible leak area is a pooly fitted intake especially near the valve covers in the rear and the air conditioner bracket in the front.