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SN95 Cobras
00' Cobra "R" heads. Help!
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<blockquote data-quote="na svt" data-source="post: 13432853" data-attributes="member: 35346"><p>Any header made for a 4.6 will work as the R exh ports are identical to those on B and C heads. The exh ports of the GT heads are different and will not accept any 4.6 exh manifolds or headers without some modification.</p><p></p><p>The 4.6 Sullivan <strong>will not </strong>work as it's ports are far too small and cannot be ported to match (see pic).</p><p></p><p>The intake ports of the F and GT heads are far too large for a 4.6 but would work with a big bore stroker.</p><p></p><p>Here's a pic of a GT/R intake gasket on a C intake:</p><p><a href="http://imageshack.us/photo/my-images/845/3zch.jpg/" target="_blank"><img src="http://img845.imageshack.us/img845/7927/3zch.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>Uploaded with <a href="http://imageshack.us" target="_blank">ImageShack.us</a></p></blockquote><p></p>
[QUOTE="na svt, post: 13432853, member: 35346"] Any header made for a 4.6 will work as the R exh ports are identical to those on B and C heads. The exh ports of the GT heads are different and will not accept any 4.6 exh manifolds or headers without some modification. The 4.6 Sullivan [B]will not [/B]work as it's ports are far too small and cannot be ported to match (see pic). The intake ports of the F and GT heads are far too large for a 4.6 but would work with a big bore stroker. Here's a pic of a GT/R intake gasket on a C intake: [URL=http://imageshack.us/photo/my-images/845/3zch.jpg/][IMG]http://img845.imageshack.us/img845/7927/3zch.jpg[/IMG][/URL] Uploaded with [URL=http://imageshack.us]ImageShack.us[/URL] [/QUOTE]
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00' Cobra "R" heads. Help!
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