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The Edelbrock RPM Air-Gap Dual-Quad intake for 351W Ford small-blocks improves breathing across 1,500–6,500 rpm by isolating runners from engine heat for a cooler, denser charge. Built for larger-displacement 351W-based engines, it includes bosses for rear water crossover and specifies a 6-7/16" carb center-to-center spacing for dual-quad installations; intended for street and high-output applications.
Edelbrock Ford 351 W Dual Quad Air Gap Manifold
