26K views · 211 reactions | By now, LS guys know 706 heads make more than 317 heads na and boosted but will the 317 heads ever made more power at any boost level? Will the better flowing heads ever surpass the better compression heads? Full vid us up! | Richard Holdener | Facebook
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1K views · 91 reactions | LS 317 heads getting a full CNC port job. …
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90K views · 1.5K reactions | Richard pits a set of stock truck cylinder heads against each other! 706 vs 317's. NA vs Boost. Upgraded COMP Cams camshaft, our best selling valve springs, and some Holley on board! Which truck head will DO WORK? Watch to find out! | Brian Tooley Racing | Facebook
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90K views · 1.5K reactions | Richard pits a set of stock truck cylinder h…
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