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Discussion Starter #1
what exactly do i need to do to some old 302 heads, so that they are able to run on unleaded gas? All the details please?
 

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See the thread about hardened valve seats.

You may have to read a lot, but it will help you decide if you need to do anything at all. It seems to be up to the individual at this point. Personally, I'd do the seats.
 

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Would rotator retainers help?

I heard about "the rotator retainers on the exhaust-valves would help and the valve seats would hold longer time "
 
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