[rokndad]

When I had the 4bbl on my car, it did the same thing initially. I reset the idle to 800-850 and I have a pretty lumpy cam in it and it initially didn't sound right idling at that speed. I always thought it was going to stall, but it didn't so I left it there. Once the idle speed was down, it quit running on. I later bumped up the idle slightly and added a can of octane booster to the fuel. No run on.