300 I-6 Rocker Studs
Hi, I am trying to find out when ford changed stud sizes on the 300 I-6. My 77 came with self locking nuts. I need a valve job and I picked up another head which has smaller non-locking nuts and jam nuts. I can't make out the code on the head and am trying to figure out when they changed so I know the year of the head. They both have adjustable rockers and hopefully will interchange. Thanks in advance.
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According to the Ford parts catalog 73-77 used studs with 3/8"-24 thread. In '78 they switched to the smaller 5/16"-24 thread.
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Thanks for the quick response. That helps alot.
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Originally Posted by mikeo0o0o0
(Post 12930970)
According to the Ford parts catalog 73-77 used studs with 3/8"-24 thread. In '78 they switched to the smaller 5/16"-24 thread.
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Originally Posted by F-4 GUY
(Post 12937804)
Are the pushrods the same?
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