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Old 11-27-2008, 09:25 PM
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Join Date: Sep 2004
Location: indiana
Posts: 487

I just did this with uriah. If you didn't ask for it to be shimmed for a specific nitro percentage then its as shimmed from the factory for 16% nitro. A couple of pages back on this thread there is head shimming instructions. I am going to run 20% with my 12-3sct with the stock shim package.
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