I also use a PRW ali water pump with a stock 3 core radiator and a flex fan in my '72 Lemans. The car has a hard time getting to 180F in 90+ weather highway or idling. I don't think it is stagnant air that is the cause of your issue. In my race car, I use a generic ali radiator with a Mark VIII E fan ans a Meziere E water pump. Runs 180, gets to 200 at the end of the track and is back to 180 in the pits.
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1967 Firechicken, 499", Edl heads, 262/ [email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule.
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