This item is not solad as a pair, this is a single cylinder head
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
Crafted for 1965-2000 Big Block Chevy (BBC) V8 engines (396/427/454/496/502/7.4L), this angled-plug cast aluminum cylinder head boosts high-rpm performance for street, track, and modified builds. Its 325cc intake runners, 121cc combustion chambers, and rectangular ports optimize airflow—ideal for big-displacement Chevy V8s seeking enhanced efficiency, compression, and power.
Street & Track Versatility: Optimized for mid-to-high rpm performance—suits hot rods, street cars, and tow vehicles needing enhanced power delivery; supports turbocharged or supercharged systems via high air intake capacity Modified Build Ready: Rectangular intake ports pair seamlessly with high-flow intake manifolds, maximizing airflow for big-displacement setups (ideal for racing-focused BBC builds) Compression & Efficiency Boost: 121cc combustion chambers support higher compression ratios, while 325cc intake/140cc exhaust runners ensure efficient air/fuel flow—paired with matching camshafts, valve springs, and exhaust systems, it unlocks maximum performance OHV & Gasoline - Engine Cylinder Head Advantage: Engineered with an OHV (Overhead Valve) design, it ensures efficient torque output at low - to - mid rpm, ideal for daily street driving in hot rods, street cars, and tow vehicles. Tailored for gasoline engines, its optimized combustion chamber enables high air intake capacity, supporting turbocharged or supercharged systems for mid - to - high rpm track performance, enhancing power delivery and fuel efficiency.
Lightweight Cast Aluminum: Significantly lighter than OEM iron heads—reduces front-axle load, improves vehicle weight distribution, and enhances both handling and acceleration Superior Heat Dissipation: Aluminum construction lowers engine operating temperature, minimizing knock risk (critical for high-performance tuning of big-displacement V8s) Optimized Valve Configuration: 2.250" intake valves, 1.880" exhaust valves, and tailored angles (24.3° intake / 15.5° exhaust) further maximize airflow and combustion efficiency
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
ABOUT FLASHARK
In 2020, Flashark was established with a development concept that high quality, high performance, and high service. Flashark is a direct and professional manufacturer in automotive performance parts include intake system, exhaust system, engine system, cooling system, interior&exterior parts, etc. At the same time, it is also a service provider of automotive interior and exterior decoration solutions. In the future, we will continue to develop higher-quality and more reliable automotive-related products. Under the changing market, we always keep in mind to provide customers with better Flashark.
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