Edelbrock Manifold SBC Performer RPM Vortec Marine As-CastEdelbrock part #2516 Performer RPM Vortec marine intake manifold is based on the powerful Edelbrock #7101. This single four barrel intake is designed for, marine engines utilizing 262 400 c. i. d. Chevy V8's with 1996 and later Vortec (L31) cast iron or Edelbrock E Tec aluminum heads. The Edelbrock Performer RPM #2516 marine intake manifold features brass lined front water crossover and brass flange inserts to cover the rear water openings. An