LS2 Intake Manifold Porting - LS2 Stealth Mods
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The center section (lower plenum) of the manifold is placed into the lower section. Pete points out that the sealing surface directly behind the 90mm throttle body opening is challenging, from a manufacturing standpoint, to seal. Since the LS2 manifold isn't vibration welded internally, the stacking of minor manufacturing tolerances can lead to internal leaks. View Related Article
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