Thread: #13 Heads correct for a 1970 RA III auto Firebird??
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Old 01-18-2010, 12:30 PM
altfueler altfueler is offline
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Default #13 Heads correct for a 1970 RA III auto Firebird??
Hi, looking for some input. I have a set of #13 heads, dated coded November 1969. I know the #13 head was used in some base 400's, though wasn't the #13 head correct for a 1970 RA III Firebird- T/A???, in a lower HP rating than the 366hp GTO RA III?

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