Edelbrock 7581 RPM Air Gap 351-W Intake Manifold- $249.99

Ford 351 Windsor V8
RPM AIR-GAP 351-W (1500-6500 rpm)
Designed for street and high performance 351-400+ c.i.d. 351-W Ford V8s, the RPM Air-Gap incorporates the same race-winning design that's been used on our Victor Series competition intakes for years. The air-gap design features an open air space that separates the runners from the hot engine oil resulting in a cooler, denser charge for more power. Larger cross sectional area and a taller carb flange than #7181 for compatibility with large displacement, stroker 351-W based engines. Includes nitrous bosses. No provision for exhaust heated chokes and no exhaust crossover. Aftermarket 4-bbl carbs are not compatible with Ford Auto Overdrive Transmission (AOD) unless used with Lokar bracket SRK-4000, see note below.

Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 650-800 cfm, for auto. trans. use our #1483 & #1491 or #1844 & #1846.

Installation Notes: Use 12-bolt intake gasket set (Edelbrock #7220 recommended). Manifold height: A-5.31", B-6.19" see A/B Measurements. Port exit dimensions: 1.07" x 1.88".