I've seen several cars quit or refuse to start where everything seemed to work right but they wouldn't spark. The little allen bolt that holds the distributor rotor in place had come out and the rotor was spinning freely on the cam. Relatively easy to find when you find out it isn't sparking but I've seen it drive people crazy.[/quote]

second this one.

Yep, my car seems to have a slight stutter around 5,500. This was my first weekend with the car and at first I thought that was the rev limiter! lol Anyway it pulls right through it to the right rev limiter (which is much more noticeable).

It doesnt do it every time, but very very often. No diagnostics have been done yet. I've only been up there on full throttle, all part throttle situations appear fine.