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I have seen valve damage in a 440 motor from unleaded gas. IT WAS MY MOTOR. The 77 does not have hardened seats. They will get pounded to nothing. But you can have the seats installed. AS for parts. They are getting hard to find for the 440-3. Be very carefull with the thermostat. They are not the same as a car 440 and are unavailable.
Moisheh |