Edelbrock 289-302 Ford RPM Air-Gap Manifold

If you're building a street machine or bracket racer for your small-block Ford V8, you'll want to consider an intake manifold that can help you get the most out of your engine. This Edelbrock RPM Air-Gap manifold is designed for 289, 302, 331, and 347 cubic inch Ford V8s, offering a significant performance boost in the 1,500 to 6,500 RPM range. It's a popular choice for hot rodders and builders looking for that serious horsepower look under the hood.

What sets this manifold apart is its Air-Gap design. It features an open space beneath the intake plenum that separates the intake runners from the hot engine oil. This separation helps keep the incoming air charge cooler and denser, which directly translates to more power. Compared to the standard Performer RPM design, this #7521 version has larger runners, especially at the plenum entries, which is beneficial for larger displacement stroker engines. It also comes with bosses for nitrous injection, though it doesn't have provisions for exhaust heated chokes or an exhaust crossover.

This manifold fits a wide range of Ford vehicles from the 1960s through the 1980s, including models like the Ford Bronco, F-100, and Fairlane. If you're using a Ford AOD automatic transmission with an Edelbrock carburetor, you'll need a Lokar bracket SRK-4000 for proper compatibility.