
11-03-2010, 09:37 AM
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CC Member
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Join Date: Jul 2005
Location: Bartlett,
Ill
Cobra Make, Engine: Everett-Morrison LS1
Posts: 2,448
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Not Ranked
The Ford pattern is the 4 bolt years---and the 4 bolt /3 bolt years had different backspacings---people take and drill a little larger or rat tail file the bolt holes to fit but it doesn't center on the hub and there is run out causing vibrations and belt tension problems
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