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Old 08-04-2009, 09:43 PM
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With out knowing more about your engine, I haven't got a clue. What is the actual compression ratio, iron heads or aluminum, the cam duration @ .050" lift and where is it installed? The chart showed your peak horsepower at only 4500. That sounds low to me. The bottom end stumble could be a lack of accellerator pump shot.
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