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I'm rebuilding a '48 288 & it needs some Valve seats replaced. One in particular is too far gone to dress with a seat cutter.

I can not find any reference in the parts book ( other than Valve spring seat - different part) and the exploded engine views are not showing the seats as separate parts. Nothing listed at egge.

Does anyone have an interchange , or specs / measurements on the seats so I can cross reference .

If nothing matches up I can make new seats from scratch but I rather buy them if easily available parts from another engine fit, they can't be any more than $10.00 each , prolly cost me $50 each to make.

I know this is an I8 but I do have V8 valve seats in my basement. I can see who made them, and the specification.

I’ve had quite a few valve seats replaced which was always done by the shop working on the engine machining which was usually a Napa store’s machine shop. It’s not something I would ever considering trying myself and they’ve never had trouble finding an appropriate seat!