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dyno seems low

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Old 04-11-2007, 08:01 AM
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Depending on how old the heads are, they will have a 4 digit number stamped on the front of them if they are our's.
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Old 04-11-2007, 09:43 AM
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maybe they are stock LS6/LS2 heads....just a thought.
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Old 04-11-2007, 07:47 PM
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The only number i could see without removing the valve cover is 706.
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Old 04-12-2007, 07:46 AM
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I had a 234/236 570ish nitrous cam with 5.7 Stage 2 heads in my old set-up. Without ALL the bolt-ons it did 436/420, so I think that is a bit low. If the heads totally suck...very believable. I'll bet it is a tuning issue.
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