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SVT Shelby GT500
Scoring on cam lobes
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<blockquote data-quote="merkyworks" data-source="post: 15896431" data-attributes="member: 179203"><p>So now the makes 4 instances of the scoring. Was your engine blown or was it still in good condition?</p><p></p><p>I could be totally wrong on this but I'm wondering if maybe the cam towers on GT/GT500 heads are causing this. At certain loads or RPM the cam towers are flexing. </p><p></p><p>If you compare the cam towers on 4V heads (left to right), 03-04, "B", GT/GT500 you can see the GT/GT500 heads are the only ones without a cam tower girdle.</p><p>[ATTACH]1485080[/ATTACH] </p><p></p><p>Then when you look at the Coyote 4V heads you can see the cam towers are positioned fully inside the head and not sticking up like older 4V heads. Doing this would eliminate any need for a girdle and would not allow the towers to flex. </p><p>[ATTACH]1485082[/ATTACH] </p><p></p><p>Just a thought, like I said I could be way off on this.</p></blockquote><p></p>
[QUOTE="merkyworks, post: 15896431, member: 179203"] So now the makes 4 instances of the scoring. Was your engine blown or was it still in good condition? I could be totally wrong on this but I'm wondering if maybe the cam towers on GT/GT500 heads are causing this. At certain loads or RPM the cam towers are flexing. If you compare the cam towers on 4V heads (left to right), 03-04, "B", GT/GT500 you can see the GT/GT500 heads are the only ones without a cam tower girdle. [ATTACH]1485080[/ATTACH] Then when you look at the Coyote 4V heads you can see the cam towers are positioned fully inside the head and not sticking up like older 4V heads. Doing this would eliminate any need for a girdle and would not allow the towers to flex. [ATTACH]1485082[/ATTACH] Just a thought, like I said I could be way off on this. [/QUOTE]
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SVT Shelby GT500
Scoring on cam lobes
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