Ok it sounds like I may have to experiment with some different intake manifolds. As far as the cam I relied on the builder who did the work on the short block for me as I was not qualified to make that decision. I have not spun it past 7200, but it pulls pretty hard in the upper rpm range. I'm not dissatisfied with the way it performs, but just wondered if I left anything on the table performance wise when it came to the carb. Thank you for the advice !