Overheating Warranty round tab on Passenger head frost plug from engine builder.
Along with Yellow ID paint.
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At this point for entertainment purposes, would be good if the original poster pulled one head to see what (flat top or valve relief) pistons are in it, and how far down in the hole they are and see which cylinders are rusted. Look at the cam condition same time.
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He can also rock the crank back and forth and watch the distributor rotor to see how much slop is in the timing chain. Will help tell how long it ran after the Reman Rebuild.
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