---!@!start!@!---Specifications---!@!end!@!--- Vehicle Compatibility Fits 1965-2000 Big Block Chevy (BBC) V8 engines, including 396, 427, 454, 496, 502 cubic inch models and 7.4L variants Angled-plug design: Compatible with BBC ignition systems; replaces OEM cast-iron cylinder heads for direct fitment on corresponding engine blocks Brand EVIL ENERGY Spark Plug Type BBC Angled Plug Fuel Type Gasoline Engine Cylinder Head Valve Configuration Overhead Valve (OHV) Material Cast Aluminum Weight 35.31lb（16.02kg） Vehicle Compatibility 1965-2000 Big Block Chevy 396 427 454 496 502 7.4L V8 engines. Combustion Chamber Volume 121cc Intake Runner Volume 325cc Exhaust Runner Volume 140cc Intake Valve Diameter 2.250" Exhaust Valve Diameter 1.880" Valve Stem Diameter 0.343" Intake Valve Angle 24.3° Exhaust Valve Angle 15.5° Combustion Chamber Style Heart-Style Cooling System Water-Cooled .aplus-v2.desktop.celwidget { background: white; margin: 20px 0; position: relative; } @media screen and (min-width: 769px) { .aplus-v2.desktop.celwidget { overflow-x: auto; padding: 20px 0; margin: 0 -20px; } .aplus-v2.desktop.celwidget .prodDetTable { min-width: 1180px;/* 表格宽度调整 */ width: auto !important; margin: 0 20px; background: white; } .aplus-v2.desktop.celwidget .prodDetTable h3 { text-align: left !important; white-space: nowrap; display: block; min-width: 150px; margin: 0; padding: 0 15px; font-size: 18px; line-height: 1.4; } .aplus-v2.desktop.celwidget .prodDetTable td:first-child, .aplus-v2.desktop.celwidget .prodDetTable th:first-child { position: sticky; left: 0; z-index: 2; background: white; min-width: 220px; box-shadow: 2px 0 5px rgba(0,0,0,0.1); } } @media screen and (max-width: 768px) { .prodDetTable { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; background: white; } .prodDetTable td { min-width: 120px; } } .prodDetTable { border-collapse: collapse; background-color: white; margin: 20px 0; } .prodDetTable th, .prodDetTable td { padding: 12px 15px; border-bottom: 1px solid #ddd; vertical-align: middle; text-align: left; background: white; } .table-image { max-width: 150px; height: auto; display: block; } .prodDetTable tbody tr:hover td { background-color: #f8f8f8 !important; transition: background-color 0.3s ease; font-weight: bold; } .aplus-v2.desktop.celwidget h2 { text-align: center; font-weight: bold; margin: 20px 0; background: white; } h3 a { color: #0066c0; text-decoration: underline; display: inline-block; } h3 a:hover { color: #e81e1a; } ---!@!start!@!---Description---!@!end!@!--- High-Performance Cast Aluminum Cylinder Head for BBC Engines – Fits 1965-2000 Chevy Big Block V8 Crafted for 1965–2000 Big Block Chevy (BBC) V8 engines (396/427/454/496/502/7.4L), the EVIL ENERGY cylinder head is a high-performance Aluminum Cylinder Head upgrade designed to maximize airflow and combustion efficiency. This angled-plug engine head features 325cc intake runners, 121cc combustion chambers, and precision rectangular ports, making it one of the most reliable BBC cylinder heads for both street and track applications. Perfect for modified builds and high-displacement Chevy V8s, the EVIL ENERGY BBC heads improve efficiency, compression, and horsepower across the powerband—an ideal solution for enthusiasts upgrading OEM BBC engine heads or building custom performance BBC heads setups. 1. High-Performance Advantages Street & Track Versatility: The EVIL ENERGY cylinder head is engineered for mid-to-high RPM performance, making it ideal for hot rods, street cars, and tow vehicles. Its lightweight Aluminum Cylinder Head design delivers enhanced power delivery and supports turbocharged or supercharged systems, providing superior airflow for high-performance BBC heads and bbc engine heads. Modified Build Ready: Featuring precision rectangular intake ports, the EVIL ENERGY bbc heads pair seamlessly with high-flow intake manifolds to maximize airflow for big-displacement BBC setups. Perfect for racing-focused builds, these BBC cylinder heads provide the efficiency and flow required for custom performance applications. Compression & Efficiency Boost: Featuring precision rectangular intake ports, the EVIL ENERGY BBC heads pair seamlessly with high-flow intake manifolds to maximize airflow for big-displacement BBC setups. Perfect for racing-focused builds, these BBC cylinder heads provide the efficiency and flow required for custom performance applications. OHV & Gasoline - Engine Cylinder Head Advantage: Built with an OHV (Overhead Valve) design, the EVIL ENERGY BBC engine heads deliver strong torque output at low-to-mid RPM. Optimized for gasoline engines, their combustion chambers provide high air intake capacity, supporting forced-induction setups and enhancing power delivery, efficiency, and performance at mid-to-high RPM ranges. 2. Design & Material Benefits Lightweight Cast Aluminum: The EVIL ENERGY cylinder head is crafted from lightweight aluminum, significantly lighter than OEM iron engine heads. This reduces front-axle load, improves weight distribution, and enhances both handling and acceleration—making it a top choice among BBC heads and BBC cylinder heads for high-performance builds. Superior Heat Dissipation: Constructed from premium Aluminum Cylinder Head material, the EVIL ENERGY bbc heads lower engine operating temperatures, minimizing knock risk. This is critical for maintaining reliability and performance in high-displacement or modified BBC engine heads setups. Optimized Valve Configuration: Featuring 2.250-inch intake valves and 1.880-inch exhaust valves with precise angles (24.3° intake / 15.5° exhaust), the EVIL ENERGY bbc engine heads maximize airflow and combustion efficiency. This makes these BBC cylinder heads ideal for enthusiasts seeking both street and track performance in Big Block Chevy V8 engines. 3. Key Notes Bare-cast version: Does not include valves, springs, seals, or assembled components (separate hardware required for installation) Intake Manifold Compatibility: Not suitable for oval-port intake manifolds—must be paired with rectangular-port intake manifolds to match the cylinder head's port design This item is sold as a single cylinder head, not a pair. FAQs for EVIL ENERGY BBC Cylinder Head Q1: What is the advantage of upgrading to an Aluminum Cylinder Head for Big Block Chevy 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, reducing knock risk in high-performance BBC heads or modified BBC engine heads setups. Q2: How do EVIL ENERGY BBC heads improve performance?The EVIL ENERGY BBC heads feature 325cc intake runners, 121cc combustion chambers, and optimized valve angles, delivering superior airflow and combustion efficiency. These BBC cylinder heads boost compression, mid-to-high RPM power, and overall performance for street, track, and modified Big Block Chevy builds. Q3: Are these BBC cylinder heads compatible with all Big Block Chevy engines?No. The EVIL ENERGY cylinder head is designed specifically for 1965–2000 Big Block Chevy (396/427/454/496/502/7.4L) engines. While they share characteristics with other BBC engine heads, they are not compatible with small-block Chevy engines or non-BBC applications. Q4: Do these BBC heads come fully assembled?No. The EVIL ENERGY BBC heads are sold as bare-cast cylinder heads, meaning they do not include valves, springs, or seals. Separate components are required for full installation, making them ideal for custom builds. Q5: Can EVIL ENERGY BBC cylinder heads handle forced-induction setups?Yes. With optimized airflow and high intake capacity, the EVIL ENERGY BBC heads support both naturally aspirated and turbocharged/supercharged applications, ensuring reliable performance and enhanced power delivery for modified BBC engine heads. Q6: Why choose EVIL ENERGY BBC heads over stock BBC cylinder heads?Compared to OEM BBC cylinder heads, the EVIL ENERGY cylinder head offers lighter weight, better heat dissipation, optimized valve angles, and superior airflow. These EVIL ENERGY BBC heads are ideal for street, track, and high-performance custom Big Block Chevy builds.
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