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Togan66 · 04-19-2014, 08:49 PM

I had the same problem as described at the beginning of this thread on my '66 250 CID: first cycle of the thermostat would peg the gauge. It was very concerning. Replaced every thing multiple times, nothing fixed it. Even thought of air bubble/pocket. Nothing worked until I did exactly as Curtm220 mentioned..., 1/8 hole in base of thermostat. That was 6 years ago and never a problem again. BTW, 6 cylinders didn't come with a shroud - no such thing.

04-19-2014, 08:49 PM	#42
Togan66 Registered User Join Date: Jan 2009 Location: Wills Point, TX Posts: 39	Re: Overheating issue I had the same problem as described at the beginning of this thread on my '66 250 CID: first cycle of the thermostat would peg the gauge. It was very concerning. Replaced every thing multiple times, nothing fixed it. Even thought of air bubble/pocket. Nothing worked until I did exactly as Curtm220 mentioned..., 1/8 hole in base of thermostat. That was 6 years ago and never a problem again. BTW, 6 cylinders didn't come with a shroud - no such thing.