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The Terminator
Terminator Talk
Spark blug blew out??? help.
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<blockquote data-quote="Jimmysidecarr" data-source="post: 6719350" data-attributes="member: 11681"><p>I'm sorry but that is wrong. There was more than one revision to these heads.</p><p></p><p>My production date is January(Mystichrome run) and I have the 9 thread heads. I am currently under the impression, from talking to 04 owners, that MOST of the 04s had the "more threads heads". </p><p></p><p>The Jan 05 revision involved the improved guide cooling compared to the 04 heads, but compared to the 03 heads the improvement also included more threads.</p><p></p><p>So you can see why it would be easy to get the 04s and the 05 Aviator(the last production vehicle to use these heads) revision heads confused.</p><p></p><p>To the OP, I would look into timeserts, or if you are just rolling in money, put a set of revised replacement heads on.</p><p></p><p>Don't get the FR500 heads since they are designed, targeted, and better suited for NA applications. In fact the FR500c race cars don't even use them, they use Ford GT heads with a special narrow NA intake to allow the use of a wider 5.4 head on a 4.6 sized block.</p><p></p><p></p><p>If it was me I would do the timeserts.</p><p></p><p></p><p>..</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 6719350, member: 11681"] I'm sorry but that is wrong. There was more than one revision to these heads. My production date is January(Mystichrome run) and I have the 9 thread heads. I am currently under the impression, from talking to 04 owners, that MOST of the 04s had the "more threads heads". The Jan 05 revision involved the improved guide cooling compared to the 04 heads, but compared to the 03 heads the improvement also included more threads. So you can see why it would be easy to get the 04s and the 05 Aviator(the last production vehicle to use these heads) revision heads confused. To the OP, I would look into timeserts, or if you are just rolling in money, put a set of revised replacement heads on. Don't get the FR500 heads since they are designed, targeted, and better suited for NA applications. In fact the FR500c race cars don't even use them, they use Ford GT heads with a special narrow NA intake to allow the use of a wider 5.4 head on a 4.6 sized block. If it was me I would do the timeserts. .. [/QUOTE]
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Spark blug blew out??? help.
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