EVIL ENERGY Small Block Chevy Vortec Dual Plane Intake Manifold

EVIL ENERGY Small Block Chevy Vortec Dual Plane Intake Manifold Overview

The EVIL ENERGY Small Block Chevy Vortec dual plane intake manifold is made for builders who want a practical carburetor upgrade for compatible SBC engines with 1996+ Vortec L31 cast iron heads. Its 2,000-4,800 RPM range focuses on the part of the powerband most street cars and light trucks use every day: clean throttle response, cruising torque, and dependable low-to-mid RPM drivability.

Vehicle and Engine Fitment

This Small Block Chevy Vortec intake manifold is designed for 262-400 cid Chevy V8 engines using 1996+ Vortec L31 cast iron heads. Common Vortec-era reference applications include Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, GMC Yukon, Chevrolet Suburban, GMC Yukon XL, Chevrolet Express Van, GMC Savana Van, and compatible SBC swap or refresh projects.

Vehicle names are provided as reference examples only. Final fitment can change with engine swaps, cylinder head changes, carburetor selection, EGR requirements, throttle linkage, air cleaner height, brake booster clearance, accessory brackets, and hood clearance. This manifold will not fit under a stock Corvette hood, so clearance should be checked before installation.

Key Features - EVIL ENERGY SBC Vortec Intake Manifold

• Vortec L31 Cylinder Head Compatibility: Designed for compatible 262-400 cid Chevy V8 engines using 1996 and later Vortec L31 cast iron cylinder heads.
• Dual Plane Carburetor Layout: The dual plane intake design supports street-focused throttle response, vacuum signal, and low-to-mid RPM drivability for carbureted SBC builds.
• 2,000-4,800 RPM Operating Range: Built around the RPM window commonly used in street driving, cruising, throttle roll-ons, and moderate performance use.
• Cast Aluminum Construction: The cast aluminum body provides a durable intake platform for Vortec head upgrades and Small Block Chevy carburetor intake manifold swaps.
• Water Crossover Feature: Includes an external water bypass boss machined into the front of the water crossover for 1996 and later Vortec production engine layouts.
• Street and Budget Build Friendly: Suitable for compatible SBC projects where the goal is a carburetor-ready Vortec intake upgrade for cruising, light truck builds, and weekend performance use.

Package Contents and Installation Checklist

Before Installation, Check These Items

• Confirm that your engine uses compatible 1996+ Vortec L31 cast iron cylinder heads.
• Verify intake bolt pattern, port alignment, gasket style, and water crossover requirements.
• Confirm whether your vehicle requires EGR. This manifold is intended for non-EGR applications where applicable.
• Check carburetor mounting pattern, throttle linkage, throttle cable bracket, fuel line routing, vacuum ports, and PCV routing.
• Check hood clearance, air cleaner height, brake booster clearance, distributor clearance, and accessory bracket clearance.
• This manifold will not fit under a stock Corvette hood.
• Use suitable intake gaskets and follow the proper torque sequence during installation.

Why Choose This Vortec Intake Manifold?

This SBC Vortec dual plane intake manifold is a practical choice for builders who want a carburetor-ready upgrade for compatible Small Block Chevy engines with 1996+ Vortec L31 heads. For many street and light truck SBC builds, throttle response, vacuum signal, cruising torque, and mid-range drivability matter more than peak high-RPM output.

For Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, Suburban, Express, Savana, or SBC-swapped projects using compatible Vortec heads, this EVIL ENERGY Vortec intake manifold provides a street-focused intake solution for carbureted builds. Final results depend on the full engine combination, carburetor size, camshaft, exhaust, ignition timing, fuel system, and installation quality.

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