Engine noise - 425 in a 64 Riviera

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6 hours ago, 60FlatTop said:

Did you get a chance to look at the rocker arm shafts? Only costs a little time and a set of cover gaskets. I have been working on Buicks since my early teens so it is based on reliable experience.



This will be looked at when it is in the shop for the EFI swap in a week or two.

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IrIforfun,  thanks for the info.  I should have known the problem since it happened to me before in a chevy 350.  Lasted about 2 years on that engine until there was to much blowby from the damaged cyl. wall or piston. 

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