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Should operate at 180 > 185 F. for std set up. I have a 73 Satellite sebring with 400 4bbl & run std specs. Have accurate temp guage ( after market ) & she runs from 175 to 185, even in the 40 + degrees ( celcius ) heat we get here in Australia.

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Garry

Adelaide , South Australia

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Q: What is the coolant operating range of 1973 Plymouth Roadrunner 400ci engine?
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