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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
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As far as I know, SC heads have larger intake ports so they would flow better than 930 ones right out of the box. I don't think you'll have problems with valve guides or valves as long as standard sodium-filled valves are used.

930 heads are made of slightly different alloy which should tolerate heat better. There are different opinions on this subject, but from limited observations N/A heads doesn't seem to suffer from this even in turbocharged installations.
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Old 01-25-2009, 06:11 AM
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