07-04-2016, 09:15 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,017
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Not Ranked
As a 428 owner, I am keenly aware of the flywheel balance issue. I think if you had a flywheel though that was totally wrong, you would feel it at low RPMs as well. I would start with the phasing check first - it's the easiest.
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