Product details:

Bolt a carburetor onto your LS engine with a Holley LS EFI 2x4 Mid-Rise Intake Manifold. Designed in the tradition of the dual Holley 4160 induction systems that had their heyday in the 1960s. Dual-plane, equal-distribution layout generates great mid-range torque without compromising top-end power. Versions available for your carbureted or EFI model. Yields superior power in the 1. 500 to 7. 000 RPM range. Ideal for any street/performance, muscle car or street rod enthusiast. Boasts durable cast aluminum construction. Intended for use on all GM LS Gen III engines equipped with LS1/LS2-style cathedral port cylinder heads. Carb flange center-to-center measures 8.625 Not CARB emission certified.