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The Terminator
Terminator Talk
Zinc Yellow Terminator being saved from the crusher.
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<blockquote data-quote="CobraBob" data-source="post: 16916249" data-attributes="member: 6727"><p>Here is some info in my Terminator FAQs that might help. <a href="https://svtperformance.com/pages/Terminator-FAQs/#_Toc35092462" target="_blank">CobraBob's Terminator FAQs</a></p><p></p><p><em><span style="color: rgb(124, 112, 107)">There's been much discussion over this. It was believed that all '03 and all '04 Cobras had 4 threads from the factory, and that only the latest heads (01/05) had 9 threads. The latest information suggests that all 2003 Cobra got 4 thread heads, early '2004 Cobras may have gotten 4 thread heads left over from MY2003, and '2004 Cobras built after some date in 11/2003 got 9 thread heads. It's safe to say that the vast majority of 2004 Cobras got the 9 thread heads. However, even these revised 2004 heads don't have the revised coolant passages found on the heads released in 01/2005. This is interesting information because there have been reports of spark plugs blowing out of the heads possibly in part due to the lack of sufficient threads and possibly also due in part to an improper installation of the plugs. I don't believe there is any substantial proof that 4 threads is a potential issue since the reported cases of blown out plugs is so few, but obviously having 9 threads is better than 4. I find it interesting that Ford changed the number of threads for the 2004 Cobra. The question is why they would do that if they weren't concerned about the heads only having 4 threads.</span></em></p></blockquote><p></p>
[QUOTE="CobraBob, post: 16916249, member: 6727"] Here is some info in my Terminator FAQs that might help. [URL="https://svtperformance.com/pages/Terminator-FAQs/#_Toc35092462"]CobraBob's Terminator FAQs[/URL] [I][COLOR=rgb(124, 112, 107)]There's been much discussion over this. It was believed that all '03 and all '04 Cobras had 4 threads from the factory, and that only the latest heads (01/05) had 9 threads. The latest information suggests that all 2003 Cobra got 4 thread heads, early '2004 Cobras may have gotten 4 thread heads left over from MY2003, and '2004 Cobras built after some date in 11/2003 got 9 thread heads. It's safe to say that the vast majority of 2004 Cobras got the 9 thread heads. However, even these revised 2004 heads don't have the revised coolant passages found on the heads released in 01/2005. This is interesting information because there have been reports of spark plugs blowing out of the heads possibly in part due to the lack of sufficient threads and possibly also due in part to an improper installation of the plugs. I don't believe there is any substantial proof that 4 threads is a potential issue since the reported cases of blown out plugs is so few, but obviously having 9 threads is better than 4. I find it interesting that Ford changed the number of threads for the 2004 Cobra. The question is why they would do that if they weren't concerned about the heads only having 4 threads.[/COLOR][/I] [/QUOTE]
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Zinc Yellow Terminator being saved from the crusher.
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