Thread: how many bolts on the mains on a 69 351W block?
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Old 05-07-2005, 04:55 PM
cobrashoch cobrashoch is offline
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4 bolt main cap conversions for 351W's are dependent on casting numbers and years. You can't just put any old cap you find in a cataloge on just any 351 block. Mexican block 302's have the bigger mains of the 351's and can be used in this conversion too.
Also, stay away from the aluminum caps out there, they are junk.
cobrashock
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