Holley Small Block Chevy EFI and Carbureted Intake Manifolds - Engine Builder Magazine

Holley Small Block Chevy EFI and Carbureted Intake Manifolds

Holley/MSD has announced the release of two new small block Chevy intake manifolds – one for EFI applications and one for carbureted engines.

Holley/MSD has announced the release of two new small block Chevy intake manifolds – one for EFI applications and one for carbureted engines.

Holley’s EFI SBC 4150 Single Plane EFI Intake Manifolds help provide a broad RPM power band for high-performance street/strip applications up to 7,500 rpm. They are compatible with 4150-style throttle-body EFI systems and most stock hardware and accessory brackets and features an updated plenum divider area, a one-inch-shorter overall height, and two different distributor-clamp locations. The isolated design of the air/fuel passages increases charge-air density and overall performance, and the fuel-injector bores feature back-cut exits in the runners for improved atomization.

The single-plane EFI intake manifolds point the injectors at an angle matching the intake-runner airflow angle and come complete with black-coated fuel rails and rail brackets for an easy, hassle-free installation (injectors not included). They are perfect for 1957-’86 small blocks from 262-400 cubic inches and 1987-’91 Corvette L98 aluminum cylinder heads and are compatible with any aftermarket heads with a standard port-flange opening and standard mounting-bolt locations. A throttle-cable bracket and kickdown-cable bracket are available separately.

Like the EFI manifold, the SBC 4150 Single Plane Carbureted Intake Manifold creates a wide power band for high-performance street/strip applications up to 7,500 rpm. The carburetor-mounting pad accepts all stock and aftermarket square-bore carburetors with either manual or electric chokes. It works with most stock hardware and accessory brackets and features an updated plenum divider area, a one-inch-shorter overall height, and two different distributor-clamp locations. As with the EFI intake, SBC 4150 Single Plane Carbureted Intake Manifolds feature isolated air/fuel passages to increase charge-air density and overall performance. They’re ideal for 1957-’86 small blocks from 262-400 cubic inches and 1987-’91 Corvette L98 aluminum cylinder heads and compatible with any aftermarket heads with a standard port-flange opening and standard mounting-bolt locations.

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