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post #3 of (permalink) Old 03-08-2004, 03:24 PM
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Re: Head bolt grade on 258 ?

They are torqued to a higher value than grade 8 in the charts I referred to, and thus lead me to believe they are stronger than grade 8. Perhaps my reasoning is wrong in thus concluding they are stronger than grade 8???? As well, the shank and shoulder of the head of the bolts are machined differently than typical bolts. Unless you buy new head bolts from Chrysler or another source, I would use a stud kit designed for cylinder heads to replace them. I would be hesitant to use ordinary grade 8 bolts.
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