GM243 cylinder head OE:12564243

The GM 243 cylinder head (12564243) is known for its exceptional airflow and performance capabilities. Originally designed for the LS6 and LS2 engines, it features a lightweight aluminum design, high-flow cathedral ports, and large intake/exhaust valves. This head is a go-to option for those looking to enhance engine power, offering significant gains in horsepower and torque for GM's LS-series engines. Ideal for both daily drivers and performance enthusiasts, it's a reliable choice for boosting performance in vehicles like the Chevrolet Corvette and Pontiac GTO.

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GM243 Aluminum cylinder head 12564243

Short Description:

  • OE NO.:12564243
  • AMC NO.:
  • Engine type:GM243
  • Number of valves:8
  • Number of camshaft:1
  • Gross weight:12
  • Net weight:11
  • Packing size:59*29.5*22
  • Brand:GM



    • GM 243 Cylinder Head (Part Number: 12564243) Details:

    The GM 243 cylinder head is widely recognized for its excellent performance capabilities, primarily used in GM's LS-based V8 engines, including the LS6 and LS2 engines. This head is well-regarded in the automotive performance industry due to its superior flow characteristics, making it a popular choice for enthusiasts and tuners looking to boost engine performance.

    Key Features:

    • Compatibility: Originally found on the LS6 5.7L and LS2 6.0L engines, which were used in vehicles such as the Chevrolet Corvette C5 Z06, Pontiac GTO, and Cadillac CTS-V.
    • Material: Made from high-quality aluminum, which provides a lightweight solution with excellent heat dissipation.
    • Valve Configuration: The 243 head comes with large 2.00" intake and 1.55" exhaust valves, promoting better air intake and exhaust flow.
    • Combustion Chamber Size: Features a 64cc combustion chamber, which supports higher compression ratios for improved engine power.
    • Port Design: Cathedral port intake design, which is known for high-velocity airflow and excellent power output, especially at higher RPMs.
    • Performance: Ideal for stock replacements or performance upgrades, the 243 heads are known for increasing horsepower and torque thanks to their improved airflow characteristics.

    Benefits:

    • Increased Power: The GM 243 cylinder head’s high-flowing port design helps maximize air and fuel intake, which results in higher horsepower and torque.
    • Lightweight and Durable: The aluminum construction reduces overall engine weight, which can improve vehicle handling and fuel efficiency while offering robust durability.
    • Versatile: This cylinder head is perfect for stock replacements as well as performance upgrades, making it suitable for both daily driving and racing applications.
    • High-Performance Upgrade: Often used in high-performance engine builds due to its ability to handle higher compression ratios and enhanced airflow dynamics.

    The GM 243 cylinder head (12564243) is a preferred choice for those looking to improve the performance of their LS-series engine, whether it's for racing or high-powered street applications.


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