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post #7 of (permalink) Old 05-07-2014, 11:22 AM
PSIG
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Join Date: Jan 2008
Location: Seattle, WA area
Posts: 10,299
Re: Need biggest downflow radiator for 68 Torino

I would set aside all assumptions, and test for what's actually lacking. My first two tests:
  1. Fully warm, take it up to sustained mid-cruise speeds, and high-cruise (highway). If the engine cools-off, the rad is fine, and it's an airflow issue. Shroud it.
  2. Still hot? Install a cooler performance (160 to 175) thermostat. Does it still hit 220? If so, it's a radiator issue. If not, it's a circulation issue.
Armed with that info, hopefully you can address the problem more directly.

David

-=≡ If it was easy everyone would do it ≡=-
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