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Old 10-15-2009, 9:15pm   #4
Mike Mercury
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it's not like in the older days... when you could flip over the air cleaner lid and gain 5-7hp. If the LS1 motor is stock; porting the throttle body alone will not yield much of an inprovement.

Everything on the stock LS1 is well matched and up to the task; at stock HP levels.
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