EVIL ENERGY Cast Aluminum Cylinder Head for LS1 Engines (Angled Plug) – Cathedral Ports, Fits 1997-2003 Chevy LS1, Enhances Mid-High RPM Performance

EVIL ENERGY LS1 Cylinder Head 

High-Performance Cast Aluminum Cylinder Head for LS1 Engines (Angled Plug) – Fits 1997-2003 Chevy LS1

Engineered exclusively for 1997–2003 Chevy LS1 engines, the EVIL ENERGY cylinder head is a high-performance Aluminum Cylinder Head designed to upgrade airflow and combustion efficiency. This angled-plug engine head features 210cc cathedral ports, 66.5cc combustion chambers, and a lightweight aluminum design, making it one of the most reliable LS1 cylinder heads for street performance. By boosting intake efficiency, compression, and overall power, the EVIL ENERGY LS heads deliver responsive acceleration under 6,000 RPM—ideal for high-performance street cars, tow vehicles, and casual racing builds seeking durable and affordable LS heads.

• Street Performance Focus: The EVIL ENERGY cylinder head is tuned for mild LS1 modifications, pairing perfectly with high-flow intake manifolds to enhance mid-range acceleration. This makes it an excellent Aluminum Cylinder Head upgrade for daily-driven or street-performance LS1 cylinder head applications.
• Low-to-Mid RPM Optimization: Designed for reliable power delivery under 6,000 RPM, the EVIL ENERGY ls heads provide excellent balance between performance and durability. Perfect for tow vehicles, hot rods, and casual racing builds, these LS engine heads avoid the long-term stress of sustained high RPM operation.
• OEM Compatibility: Built to match GM OEM LS1 geometric angles, this engine head preserves compatibility with factory pistons. As a direct replacement, the EVIL ENERGY cylinder head ensures hassle-free installation while upgrading strength and efficiency over stock cylinder heads.
• OHV & Gasoline - Engine Cylinder Head Advantage: Engineered with an OHV (Overhead Valve) design, the EVIL ENERGY ls heads deliver strong torque output at low-to-mid RPM, making them ideal for street cars, tow vehicles, and hot rods. Optimized combustion chambers allow higher air intake capacity, supporting turbocharged or supercharged systems, and helping these LS heads achieve superior fuel efficiency and power delivery at mid-to-high RPM track performance levels.

2. Design & Material Benefits

• Lightweight Cast Aluminum: The EVIL ENERGY cylinder head is built from lightweight aluminum, significantly lighter than OEM iron engine heads. This reduces front-axle load, improves vehicle weight distribution, and enhances both handling and acceleration—making it a superior choice among performance LS heads and LS1 cylinder heads.
• Superior Heat Dissipation: Thanks to its Aluminum Cylinder Head construction, the EVIL ENERGY ls heads lower engine operating temperatures, minimizing knock risk. This is critical for maintaining performance in LS1’s naturally aspirated or mild forced-induction setups, giving these LS engine heads a clear advantage over stock iron designs.
• Optimized Cathedral Port Design: Featuring 210cc intake runners, the EVIL ENERGY cylinder head improves mid-to-high RPM airflow. Its cathedral port shape optimizes intake velocity, supporting both naturally aspirated and mild forced-induction builds. Whether upgrading OEM cylinder heads or building custom LS1-powered street cars, these LS heads deliver reliable airflow and power.

3. Key Notes

• Bare-cast version: Does not include valves, springs, seals, or assembled components (separate hardware required for installation)
• Fitment Restriction: Exclusively for 1997-2003 LS1 engines; not compatible with other LS-series (e.g., LS2, LS3) or non-LS Chevy engines
• This item is sold as a single cylinder head, not a pair.

FAQs for EVIL ENERGY LS1 Cylinder Head

Q1: What is the advantage of upgrading to an Aluminum Cylinder Head for LS1 engines?
An Aluminum Cylinder Head, like the EVIL ENERGY cylinder head, is significantly lighter than OEM iron engine heads, which reduces front-axle load, improves weight distribution, and enhances handling. It also provides superior heat dissipation compared to stock LS heads, reducing knock risk in high-performance or forced-induction setups.

Q2: How does the EVIL ENERGY cylinder head improve performance?
The EVIL ENERGY ls heads feature 210cc cathedral ports and 66.5cc combustion chambers, which optimize airflow, compression, and combustion. This makes them ideal LS1 cylinder heads for daily-driven cars, tow vehicles, and casual racing builds under 6,000 RPM, delivering responsive mid-range acceleration.

Q3: Are EVIL ENERGY LS heads compatible with all LS engines?
No. The EVIL ENERGY cylinder head is engineered exclusively for 1997–2003 Chevy LS1 engines. While it shares design similarities with other LS engine heads, it is not compatible with LS2, LS3, or non-LS Chevy engines.

Q4: Do these cylinder heads come fully assembled?
This version of the EVIL ENERGY LS heads is sold as a bare-cast cylinder head, meaning it does not include valves, springs, or seals. Separate hardware is required for full installation, making it ideal for custom builds where users select their own components.

Q5: Can the EVIL ENERGY cylinder head handle turbocharged or supercharged setups?
Yes. With its lightweight Aluminum Cylinder Head design and optimized cathedral port runners, the EVIL ENERGY ls heads support both naturally aspirated and mild forced-induction builds. This ensures efficient airflow, reliable combustion, and durability under boost.

Q6: Why choose EVIL ENERGY cylinder heads over stock LS1 cylinder heads?
Compared to OEM LS1 cylinder heads, the EVIL ENERGY cylinder head offers improved airflow, reduced weight, better heat dissipation, and enhanced reliability. For enthusiasts seeking performance gains without sacrificing OEM compatibility, these LS engine heads are a cost-effective solution.

Brand Summary

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1. Quality Issues: Provide photos/videos; we cover return shipping.
2. Wrong Item Ordered: Buyer covers return shipping; email within 30 days.
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5. Incorrect Item Shipped: Contact within 7 days.

Price Protection Policy

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

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EVIL ENERGY reserves the right to interpret, modify, or terminate this policy in accordance with applicable laws and regulations.

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