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Radiator Cap 7 lb or 16 lb?

This is a discussion on Radiator Cap 7 lb or 16 lb? within the External Engine forums, part of the LSx Technical Help Section category; The cap on my radiator is looking worn. I want to replace it with a new one that has metal ...

  1. #1
    Junior Member bloop's Avatar
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    Maple Red Metalic
    2000 Trans Am

    Radiator Cap 7 lb or 16 lb?

    The cap on my radiator is looking worn. I want to replace it with a new one that has metal on top I can polish. With a LS1 I think I should get a 16 lbs, am I correct?
    http://www.donet.com/~pamela/ls1Img_2686.jpg

  2. #2
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    Should be listed in the owners manual - mine says 18 psi.

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    Senior Member mrr23's Avatar
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    dark bowling green
    2000 corvette

    the higher the pressure, the higher the boiling point is raised.

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