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Old 02-13-2022, 02:53 PM
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Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
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Originally Posted by DanEC View Post
Ford must have figured a friction fit plug might be a reliability issue in a engine that would be run extensively at high rpm (including the water pump).
No. They're actually called Welch plugs. And for your absolutely arcane automotive factoid for the day, read this:

https://www.britishcarweek.org/welch_plug.html
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