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Old 04-03-2011, 11:38 PM
smoove smoove is offline
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I have 5000 miles on my Tuff Dawg L31 Vortec. Lifters were ping a little, but have sense been fixed with the recommended 5000 mile valve adjustment. They to install flat tappet cams in their motors so you will need add a ZDDP additive.
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