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stock C5 piston ring material

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Old Mar 29, 2012 | 03:53 PM
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Default stock C5 piston ring material

anyone know what the stock piston rings are made out of on a 1997 LS1?

no guessing. i can do that, i need someone who knows the facts. thanks
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Old Mar 29, 2012 | 04:02 PM
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http://www.hotrod.com/techarticles/e...h/viewall.html

Sounds like it might ductile iron.
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Old Mar 29, 2012 | 04:07 PM
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thats what i concluded as well. have any idea of when GM switched from using plain iron rings to using ductile iron rings?
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