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Old 04-16-2010, 07:26 AM
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350 GM Heads

I am tring to find out if the GM head # 10125377 , which has spring # 3901068 will work with a factory roller cam, or do I need to replace the springs ?
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Old 04-16-2010, 08:51 AM
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These heads came on a 285 horse crate engine. Info I get says it came with a flat tappet cam so yes you`ll need springs for a roller cam. Always use the springs that match the cam.
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Old 04-16-2010, 05:19 PM
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does anybody know the flow specs of gm 354434 305 heads im using desktop dyno and i cant seem to find the flow rates anywere
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