EVIL ENERGY Small Block Chevy Dual Plane Air-Gap Small Gap Intake Manifold

EVIL ENERGY Small Block Chevy Air-Gap Small Gap Intake Manifold Summary

When a classic Small Block Chevy build feels restricted at higher RPM or loses consistency during spirited street and track driving, the EVIL ENERGY dual plane air-gap small gap intake manifold helps balance throttle response with stronger upper-range airflow. It is suited for carbureted SBC owners who want broader power delivery, cooler intake charge behavior, and improved performance in street/track upgrade scenarios.

The dual plane air-gap layout helps reduce heat transfer into the intake charge by separating the runners from direct engine valley heat. This supports denser airflow and more stable performance during aggressive driving, while the dual plane foundation keeps the manifold more street-friendly than a narrow race-only intake.

Small Gap Open Plenum Design for Broader SBC Power

This Small Block Chevy carburetor intake manifold uses a small-gap open type plenum section between the two planes. The opening allows the two sides of the plenum to help balance pressure at higher airflow demand, supporting more stable cylinder filling when the engine is pulling hard through the 4500-6500+ RPM range.

Compared with a fully divided dual plane layout, the small-gap structure is intended to broaden the usable powerband and improve high-RPM horsepower potential while only lightly affecting very low-speed torque response. For many street/track SBC builds, that balance gives the engine a flatter, wider power curve without giving up practical drivability.

1957-86 Small Block Chevy Engine and Vehicle Fitment

This SBC intake manifold fits 1957-86 262-400cid Small Block Chevrolet engines, including common 262, 265, 283, 302, 305, 307, 327, 350, and 400 cid applications. It also supports SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads for non-EGR applications.

Common vehicle families include Chevrolet Corvette, Camaro, Nova, Impala, Monte Carlo, El Camino, Caprice, C/K trucks, Suburban, Blazer, GMC light trucks and SUVs, plus select Pontiac, Buick, and Oldsmobile GM small block applications. Always verify cylinder head type, EGR requirement, carburetor setup, hood clearance, and port alignment before installation.

Air-Gap SBC Intake Manifold Performance Details

• 4500-6500+ RPM High-Performance Range: Built for SBC drivers seeking stronger upper-RPM pull and horsepower support in street/track combinations.
• Small Gap Plenum Balance: The partially connected plenum helps both planes share airflow demand under higher load, supporting more even pressure recovery.
• Dual Plane Street Manners: The two-plane foundation helps preserve practical carburetor signal and usable response for vehicles that still see street duty.
• Air-Gap Heat Isolation: The air-gap runner structure helps limit heat transfer from the engine valley into the intake charge.
• Cast Aluminum Construction: The intake manifold cast aluminum body provides a durable performance platform for classic Small Block Chevy upgrades.

Package Contents & Unboxing Checklist

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Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.

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