Edelbrock Performer RPM Air-Gap Small Block Chevy Intake Manifold #7516 it is a high-performance aftermarket part for small block Chevy engines 262-400 with Vortec heads... This intake manifold is a dual-plane, high-rise, Air Gap design for increased power and torque... Rpm range 1,500-6,500...
I bought this "new-in-the-box" but the box was falling apart so threw it away..