EVIL ENERGY LS1 LS2 LS6 EFI Intake Manifold with Fuel Rails

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Intake Manifold Product Details

Brand	EVIL ENERGY
Part Number	300-137
Product Name	LS EFI Intake Manifold with Fuel Rails for LS1/LS2/LS6 Cathedral Port Engines
Manifold Type	Single Plane / Hybrid Performance EFI Intake Manifold
Fuel System Compatibility	EFI
Included Fuel Delivery	Fuel rails included
Intake Style	Performance LS EFI intake layout
Operating Range	Approx. 3,500-5,500 RPM torque range and approx. 6,000-7,200 RPM horsepower range, depending on the full engine combination
Material	Cast Aluminum
Color / Variant	Silver / Black
Compatible Engine Family	GM LS Gen III or Gen IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads
Compatible Engines	LS1 5.7L Gen III, LS2 6.0L Gen IV, LS6 5.7L Gen III, and compatible cathedral port LS combinations
Not Compatible With	LS3/L92/L99/L76 rectangular port cylinder heads unless the engine has been converted to compatible cathedral port heads
Common Reference Applications	Chevrolet Corvette C5, Chevrolet Camaro, Pontiac Firebird / Trans Am, Cadillac CTS-V, Holden Monaro / Commodore / HSV, Pontiac GTO, Chevrolet SSR, and other compatible LS1/LS2/LS6 cathedral port applications. Final fitment depends on engine, cylinder heads, throttle body, injectors, fuel system, hood clearance, and installation configuration.
Best Use	Performance street cars, muscle cars, LS swaps, drift builds, track-day LS platforms, and EFI cathedral port intake upgrades

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EVIL ENERGY LS EFI Intake Manifold with Fuel Rails

The EVIL ENERGY LS EFI intake manifold is designed for compatible GM LS1, LS2, and LS6 cathedral port engines that need an EFI-ready intake upgrade with included fuel rails. This LS intake manifold uses a cast aluminum performance layout for cathedral port LS combinations and is suitable for performance street cars, LS swaps, muscle car builds, drift cars, and track-day projects when the full engine setup supports the intake configuration.

For builders upgrading an LS engine intake manifold, the included fuel rails help simplify the EFI intake setup, but final compatibility still depends on injector style, fuel line fittings, regulator setup, throttle body size, MAP/IAT sensor needs, hood clearance, and tuning. This manifold is intended for LS1/LS2/LS6 style cathedral port cylinder heads, not LS3/L92/L99/L76 rectangular port heads.

Important: Always confirm cylinder head port shape, throttle body compatibility, injector length, fuel rail fittings, hood clearance, sensor placement, vacuum ports, gasket style, and tuning requirements before ordering.

Vehicle and Engine Fitment

This EVIL ENERGY LS intake manifold is designed for GM LS Gen III or Gen IV engines equipped with LS1, LS2, or LS6 style cathedral port cylinder heads. Common reference applications include Chevrolet Corvette C5, Chevrolet Camaro, Pontiac Firebird / Trans Am, Cadillac CTS-V, Holden Monaro, Holden Commodore, Holden HSV, Pontiac GTO, Chevrolet SSR, and compatible LS-swapped platforms.

Vehicle names are provided as reference examples only. Engine swaps, cylinder head changes, throttle body selection, injector length, fuel rail fittings, hood clearance, accessory routing, sensor placement, and tuning can affect final fitment. Always verify that your engine uses cathedral port LS cylinder heads before installation.

Key Features - EVIL ENERGY LS EFI Intake Manifold

• LS1/LS2/LS6 Cathedral Port Fitment: Designed for compatible GM LS Gen III or Gen IV engines using LS1, LS2, or LS6 style cathedral port cylinder heads.
• EFI Intake Manifold Upgrade: Built for fuel-injected LS applications where the user needs an EFI-compatible intake manifold with fuel rails included.
• Fuel Rails Included: The included fuel rails help support the EFI plumbing layout. Confirm injector size, O-ring style, fuel line fittings, regulator setup, and fuel pressure requirements before installation.
• Performance RPM Focus: The listed operating range targets mid-range and upper-RPM performance, depending on the full engine combination, camshaft, cylinder heads, throttle body, exhaust, and tuning.
• Cast Aluminum Construction: The cast aluminum body provides a durable intake platform for compatible LS performance street cars, muscle cars, LS swaps, drift builds, and track-day projects.
• Cathedral Port LS Build Support: A practical choice for builders working with LS1 intake manifold, LS2 intake manifold, or LS6 intake manifold upgrade paths where cathedral port compatibility is required.

Package Contents and Installation Checklist

EVIL ENERGY Intake Manifold, Part No. 300-137 x 1	One EVIL ENERGY LS EFI intake manifold for compatible GM LS1, LS2, and LS6 style cathedral port engines.
EFI Fuel Rails x 1 Set	Includes matching fuel rails for the LS EFI intake manifold setup. Confirm injector length, O-ring size, fuel line fittings, regulator setup, and fuel pressure compatibility with your build before final installation.
Installation Hardware Kit x 1	Includes mounting hardware and installation accessories. Confirm all hardware against your engine, cylinder heads, intake gaskets, throttle body, sensors, and accessory setup before final installation.

Before Installation, Check These Items

• Confirm that your engine uses LS1/LS2/LS6 style cathedral port cylinder heads.
• Do not use this manifold on LS3/L92/L99/L76 rectangular port heads unless your engine has compatible cathedral port heads installed.
• Confirm throttle body size, bolt pattern, cable or drive-by-wire setup, and throttle linkage requirements.
• Check injector length, injector O-ring style, fuel rail fittings, fuel pressure regulator setup, and fuel line routing.
• Check MAP sensor, IAT sensor, vacuum ports, PCV routing, brake booster vacuum, and any required adapters.
• Check hood clearance, accessory bracket clearance, firewall clearance, and air intake tube routing.
• Use suitable intake gaskets and follow the proper torque sequence during installation.
• EFI intake manifold changes may require tuning or calibration adjustments depending on the vehicle and build.

Why Choose This LS EFI Intake Manifold?

This LS EFI intake manifold with fuel rails is designed for builders who want an EFI-ready intake solution for compatible cathedral port LS engines. For many LS performance builds, airflow, injector compatibility, fuel rail setup, throttle body selection, sensor placement, and tuning support all matter when choosing the right manifold.

For Corvette, Camaro, Firebird, GTO, CTS-V, Holden, Chevrolet SSR, or LS-swapped projects using compatible LS1/LS2/LS6 cathedral port heads, this EVIL ENERGY LS engine intake manifold provides a practical upgrade path for performance street use, drift builds, track-day vehicles, and EFI LS projects. Final results depend on the full engine combination, throttle body, injectors, fuel system, camshaft, exhaust, tuning, and installation quality.

FAQ

Q: What engines does this LS EFI intake manifold fit?
A: This intake manifold is designed for compatible GM LS Gen III or Gen IV engines equipped with LS1, LS2, or LS6 style cathedral port cylinder heads. Always confirm your cylinder head port shape before ordering.

Q: Will this fit LS3 heads?
A: No. LS3/L92/L99/L76 style engines commonly use rectangular port heads, while this manifold is intended for LS1/LS2/LS6 style cathedral port heads.

Q: Are fuel rails included?
A: Yes. This LS EFI intake manifold includes fuel rails. Confirm injector length, O-ring size, fitting size, fuel pressure regulator setup, and fuel line routing before installation.

Q: Is this a carburetor intake manifold?
A: No. This is an EFI intake manifold for fuel-injected LS applications.

Q: What should I check before buying?
A: Check cylinder head port shape, throttle body size, injector compatibility, fuel rail fittings, MAP/IAT sensor needs, vacuum ports, hood clearance, gasket style, and tuning requirements before ordering.

Q: Does this intake manifold require tuning?
A: EFI intake manifold changes may require tuning or calibration adjustments depending on the vehicle, throttle body, injectors, airflow changes, camshaft, and ECU setup.