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Old 04-02-2010, 09:42 PM   #2
BigBlockMan
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Join Date: Feb 2007
Location: Southwest Georgia
Posts: 1,469
Default Re: Not hitting RPMS

The belt not coming to the top is killing your top speed, However it should raise your rpm. Are you sure on rpm gauge? As I'm not even sure you would need to unhook rev lmiter to get to 3700. Have you checked your valve clearance. Your motor stock with no mods should easily run to 4000.
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