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Livernois Motorsports | Cylinder Head Porting for the Serious Power Addict
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<blockquote data-quote="tt335ci03cobra" data-source="post: 16115108" data-attributes="member: 68944"><p>Livernois did my gt500/gt heads and 9.3/1 5.3L shortblock. Purdy little things.</p><p></p><p>I had mine taken to a stage3 port job, and my valve ports kiss each other. The runner tracts are Siamese’d by maybe a 16th to a 32nd of an inch. I would post a pic but you’ve covered it haha.</p><p></p><p>It’s impressive what the potential is on a fully ported gt500 head. On 10psi and 9.3/1 compression, my mill with stage 3 mmr grinds makes 800whp with 62’s and a mid range intake manifold (fr500c long plume) on pump gas. On a stock 4.6 8.5/1 terminator mill with stock c heads/cams and 57’s, I had 750whp on 15psi for comparison.</p></blockquote><p></p>
[QUOTE="tt335ci03cobra, post: 16115108, member: 68944"] Livernois did my gt500/gt heads and 9.3/1 5.3L shortblock. Purdy little things. I had mine taken to a stage3 port job, and my valve ports kiss each other. The runner tracts are Siamese’d by maybe a 16th to a 32nd of an inch. I would post a pic but you’ve covered it haha. It’s impressive what the potential is on a fully ported gt500 head. On 10psi and 9.3/1 compression, my mill with stage 3 mmr grinds makes 800whp with 62’s and a mid range intake manifold (fr500c long plume) on pump gas. On a stock 4.6 8.5/1 terminator mill with stock c heads/cams and 57’s, I had 750whp on 15psi for comparison. [/QUOTE]
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