As in my previous post, I see several people saying fuel. It may not be a bad idea to spend the 30 minutes to check the push rod or fuel pump. I am not sure of the correct length, but I am sure that someone on here does. Don't do like I did last year. Do you remember the "383 sounds like a diesel" thread that I had? Right off the bat, everyone was saying that it was a timing problem, but I knew that it was not because I personally seen the timing marks were lined up when the timing chain was installed. To make a long story short, after much denial on the timing issue and about $500.00 later, I finally popped the timing cover and discovered that I used the wrong timing mark on the crank gear. It was about 4 teeth off. Spent $20.00 on a new timing gasket set and she runs like a top. Lesson learned . Thanks - 69rrvert