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<blockquote data-quote="SVTXTC" data-source="post: 16328455" data-attributes="member: 163504"><p>it’s not good. I have seen 13k and 20k stock cobras that had bad heads (factory defect) showing similar results. Sometimes these results are from defects in the DA and DB heads. Usually head work and additional ARP 2000 head studs make this all go away plus the opportunity to upgrade while you are in there. Really good to catch this before you purchase a cobra and especially before you throw a larger blower on it.</p></blockquote><p></p>
[QUOTE="SVTXTC, post: 16328455, member: 163504"] it’s not good. I have seen 13k and 20k stock cobras that had bad heads (factory defect) showing similar results. Sometimes these results are from defects in the DA and DB heads. Usually head work and additional ARP 2000 head studs make this all go away plus the opportunity to upgrade while you are in there. Really good to catch this before you purchase a cobra and especially before you throw a larger blower on it. [/QUOTE]
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