Cylinder Heads suits LS3 Aluminium Performance Heads

Upgrade your LS3 engine with precision-engineered cylinder heads designed for uncompromising performance—the Chevrolet Performance LS3 Cylinder Heads.

Key Features:

  • Enhanced Performance: Designed specifically to suit LS3 Aluminium Performance Heads, these cylinder heads elevate the overall performance of your LS3 engine. Experience increased power, improved airflow, and optimised combustion for enhanced efficiency.
  • Precision Engineering: Crafted with precision and attention to detail, these cylinder heads are engineered to meet the rigorous standards of Chevrolet Performance. The result is a high-quality component that delivers reliable and consistent performance on and off the track.
  • Compatibility: Tailored to seamlessly integrate with LS3 Aluminium Performance Heads, ensuring a perfect match for your LS3 engine. This compatibility ensures a straightforward installation process, allowing you to maximise the potential of your performance-oriented setup.
  • Durability and Reliability: Built with durability in mind, these cylinder heads undergo stringent testing to meet Chevrolet Performance's high standards for reliability. Trust in the longevity and robustness of your engine with these quality cylinder heads.
  • Optimised Airflow: Benefit from optimised airflow characteristics, promoting efficient combustion and power delivery. The design of these cylinder heads ensures that your LS3 engine receives the air it needs for optimal performance across a range of driving conditions.

Upgrade your LS3 engine's performance with confidence using the Chevrolet Performance LS3 Cylinder Heads (Part No. 12675871). Experience the precision engineering and enhanced capabilities that come with genuine Chevrolet Performance components.

Note: Professional installation by experienced technicians is recommended for optimal performance.

Aluminium performance head
Fits any LS family engine with 4.000" bore or larger
2.165" hollow stem intake, and 1.590" solid stem exhaust valves
0.550° max valve lift
As-cast L92 style intake ports
D-shaped exhaust ports
As-cast combustion chambers
Manufactured from 319-T5 aluminium alloy
High-efficiency combustion chambers
Symmetrical intake and exhaust ports
Angled spark plugs (14mm; 5/8" he 3/4" reach, taper-seat plugs)
15° valve angle (except C5R and LS7)
Bolt-down-type rocker arms (except LSX-DR, LSX-CT)
Center-bolt valve cover hold-downs
Fits GEN3 and GEN4 Small Blocks only
SKU 12675871
Barcode # 9356659341140
Brand GM Performance

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