
10-01-2003, 12:06 PM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
Back in the day,,,,,,sodium filled valves were used to carry heat away from the valve head. One interesting use was in the Chev 6 292 motor. Not a "race" application, but for heavy duty truck use.
Ernie
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