AFR 12° LS3 Head 260cc, Fully CNC Ported, 69cc Chambers, 6 BOLT
The AFR 260cc LS3 "Mongoose" Cylinder Head is the ultimate upgrade for high-performance LS3 engines. Designed for applications with 4.000" or larger bore sizes up to 454 CI, this fully CNC ported head enhances airflow and increases engine efficiency. Perfect for street and track use, it features advanced engineering and flow techniques that ensure maximum power and reliability, operating up to 7000 RPM. The head is compatible with 2007-2016 emission-controlled vehicles using General Motors' 6.2L LS engine and is street legal in all 50 states.
Piston Specifications
- Piston Top: 100% CNC Ported Combustion Chambers
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Approximate Compression Ratios:
- Varies based on bore and other engine specs
- Engine Compatibility: General Motors 6.2L LS engine (2007-2016 emission controlled vehicles)
- Engine Sizes Supported: 4.000" or larger bore up to 454 CI
Technical Details
- Material: A356 Aluminum
- Intake Port Volume: 260cc
- Intake Port Dimension: 2.610" H x 1.300" W x 7/16° Radius
- Exhaust Port Volume: 95cc
- Exhaust Port Dimension: 1.540" H x 1.760" W
- Combustion Chamber Size: 69cc
- Deck Thickness: .750"
- Minimum Bore Diameter: 4.000"
- Spark Plug Dimensions: 14mm x .750" with Tapered or Gasket Seat
Performance & Compatibility
The AFR 260cc LS3 "Mongoose" heads feature 100% CNC ported intake, exhaust, and combustion chambers for optimum airflow, providing significant power gains. With a competition 5-angle valve job and high-quality components like titanium retainers and PAC Racing Springs, these heads are built for high performance and durability. Perfect for both street and race applications, they ensure your engine performs at its peak up to 7000 RPM.
