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Old 09-03-2013, 01:45 PM   #321
OWmach1
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Join Date: Aug 2012
Location: CA
Posts: 452
Re: Under Drive Pulleys..and the problems they cause.

Quote:
Originally Posted by tmhutch View Post
I'm not a big fan of those because they often don't center accurately but I don't think any underdrive damper will destroy an engine kept at 6k or under. On a 4.6 the strong harmonics don't kick in until 6500 RPM.
I ordered MARCH pulleys, but I got a email back saying it's back ordered so I just cancelled it and plan on getting some later on.
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