What is the primary advantage of the E-CNC porting on these heads?

The E-CNC porting means the intake ports, combustion chambers, and exhaust ports have been precisely machined by a CNC machine. This ensures consistent, high-velocity airflow and improved performance compared to hand-ported or stock heads.

Are these heads compatible with my stock LS engine components?

Yes, these Edelbrock E-CNC LS3 cylinder heads are designed to be compatible with stock-style rocker arms, which can simplify installation and integration into your existing engine setup.

What kind of LS engine applications are these heads best suited for?

These heads are considered a great general-purpose, high-performance option for street-strip LS engines. They are particularly well-suited for cathedral port or 3.89-inch bore LS applications, offering an improved design over stock.

Edelbrock Cylinder Head E-Cnc GM Gen IIi/IV LS3 Small Port Lsx Block

Specifications

Brand: Edelbrock
Part #: 61329
UPC: 85347613298

Edelbrock Cylinder Head E-Cnc GM Gen IIi/IV LS3 Small Port Lsx Block

Name: Edelbrock Cylinder Head E-Cnc GM Gen IIi/IV LS3 Small Port Lsx Block
Brand: Edelbrock
SKU: edelbrock-edelbrock-cylinder-head-e-cnc-gm-gen-iii-iv-ls3-small-port-lsx-block-t14-126406
Price: 2212.34 USD
Availability: BackOrder

$2212.34

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Edelbrock E-CNC LS3 Cylinder Heads for GM Gen III/IV LSX blocks. CNC-ported for improved performance.

Key Features

This product includes a pair of Edelbrock E-CNC LS3 cylinder heads.
Designed for GM Gen III/IV LSX blocks with cathedral port or 3.89-inch bore applications.
Features fully CNC-machined intake ports, combustion chambers, and exhaust ports for improved performance.
Offers a high-velocity port design that is an improvement over stock LS3 cylinder heads.
The improved casting provides more material for porting specialists to work with.
Compatible with stock-style rocker arms.

These cylinder heads are designed for GM Gen III/IV LSX blocks, including Chevrolet applications like the L76, L77, L92, L94, L99, and L9H engines with displacements of 364 (6.0L) and 376 (6.2L).

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

What you get with the Edelbrock #61329 E-CNC LS3 cylinder head is a pair of fully CNC-machined heads designed for GM Gen III/IV LSX blocks. These heads are a solid choice for a street-strip LS engine build, offering a high-velocity port design that's an improvement over stock LS3 heads. They are particularly well-suited for cathedral port or 3.89-inch bore LS applications.

The design and casting of these heads give porting specialists more material to work with compared to a stock head, allowing for further customization if desired. Edelbrock has CNC-machined the intake ports, combustion chambers, and exhaust ports to exacting standards, which directly translates to better performance. They are compatible with stock-style rocker arms, simplifying installation in many builds.

These heads are a great general-purpose option for those looking to boost the performance of their LS engine. Whether you're building a street car with a bit more punch or a light-duty race vehicle, these E-CNC LS3 heads are a well-built component to consider.