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Old 09-26-2013, 08:01 AM
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Tom Wells Tom Wells is offline
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Join Date: Mar 2000
Location: St. Augustine, FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
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Jeri,

Best I could find is 3/8 -16 x 1 1/4

The OEM bolts have a flanged head and a captive lockwasher. Probably a grade 5 or 8 bolt with a lockwasher will do.

Tom
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