Pan Bolts


Old 12-17-03, 04:38 PM
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Pan Bolts

Can somebody tell me what size bolts hold the oil pan on a 1989 ford 351.

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Old 12-17-03, 06:03 PM
billys68ss's Avatar
Join Date: May 2003
Location: USA
Posts: 1,459
Either 7/16 or 1/2 heads. 1/4-20 or 5/16-18 thread respectively. If I remember correctly the perimeter bolts are the 7/16 (1/4-20) and there are 4 bolts at each corner that are 1/2 (5/16-18) I know a small block Chevy is like this, but I believe the Ford is the same way. Plus since it is an engine fastener that has not likely been upgraded to metric im almost certain that is what they are.
Hope this is helpful to ya,

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