Ford Flathead Intake Manifold Collection GMC 4 71 Manifold
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Here's a GMC 4-71 blower that's been "pruned" (the original fins have been trimmed so the Flathead's twin parallel water hoses fit alongside it). The blower manifold is a Navarro, that differs from a standard S.Co.T blower intake, because it has a wider square intake opening, and it features two pop-off valves, (that blow off at 15 psi) not just one. View Related Article
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