Not Ranked
Jeff,
I know this is a late reply. I've only been a member for a short time. I have a 454 and had a severe problem after 5000 RPM. I was able to find the problem. It had to do with the cam. If your problem went away with higher rpm it has to be different. I'll watch this thread to see if you reply. Is your 454 a Marine 454?
Tom Miletich
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