Edelbrock part #28235 Super Victor LS-R EFI two-piece manifold is intended for LS-R high performance race applications operating in the 8,000 rpm range utilizing Edelbrock LS-R CNC cylinder heads #770468. The single plane design features a 4500 series throttle body flange and is capable of producing near 1,000 hp. This Manifold features machined fuel injector bosses for EFI applications. LS-R fuel rail kit, #3510, is available separately. Port exits are tipped 6.5 degrees.