Edelbrock Victor CNC Cylinder Head

1987–2006 Jeep 4.0L Inline-Six

Part #: 50149

Overview

The Edelbrock Victor CNC Cylinder Head is a high-performance upgrade designed specifically for Jeep 4.0L inline-six engines produced between 1987 and 2006. This fully CNC-ported cylinder head is an advanced iteration of the long-standing 50169 Performer head, offering enhanced airflow and durability for enthusiasts seeking improved engine efficiency and power potential. Ideal for street performance builds, mild racing applications, or restoration projects, the Victor CNC head delivers precise engineering and superior materials to elevate your Jeep’s engine performance.

By combining modern CNC porting technology with a valve job optimized for COMP Cams LS-style 8 mm valvetrain components, this cylinder head opens up a wider range of camshaft and valve spring options. This flexibility allows builders to tailor their valvetrain setup to match specific performance goals without compromising reliability or sealing integrity.

Key Features

The Edelbrock Victor CNC Cylinder Head incorporates several advanced features that contribute to its performance and longevity:

• Fully CNC-machined intake ports sized at 182 cc for improved airflow and volumetric efficiency
• Exhaust ports measuring 77 cc, optimized for effective gas evacuation
• Compact 55 cc combustion chambers designed to increase compression and combustion efficiency
• Valve job specifically matched to COMP Cams LS-style 8 mm valvetrain components for enhanced compatibility
• Ductile-iron valve seats engineered for durability and precise valve sealing
• Premium manganese bronze valve guides that resist wear and maintain tight tolerances
• Precision machining to industry-leading tolerances ensuring consistent performance and fitment
• Compatibility with a broad range of valve spring combinations to suit various camshaft profiles

Construction & Design

Manufactured from premium materials, the Victor CNC Cylinder Head exemplifies Edelbrock’s commitment to quality and precision. The head features ductile-iron valve seats that provide superior wear resistance and maintain valve sealing under high cylinder pressures. The manganese bronze valve guides are selected for their longevity and ability to hold exacting tolerances, which is critical for valve seat concentricity and minimizing leak down.

Every port and chamber is fully CNC-machined, ensuring consistent airflow characteristics and repeatable performance across all units. This meticulous machining process enhances airflow dynamics, contributing to improved combustion efficiency and power output. The design also supports the use of LS-style valves, expanding the valvetrain component options available to builders.

Installation & Fitment

The Edelbrock Victor CNC Cylinder Head is a direct fit replacement for Jeep 4.0L inline-six engines from 1987 through 2006. Installation requires standard cylinder head removal and replacement procedures with no major modifications necessary. The compatibility with LS-style 8 mm valvetrain components may require corresponding valvetrain upgrades to fully realize the head’s potential. Proper torque specifications and gasket selection are essential to ensure a reliable seal and optimal performance.

What’s Included

• One Edelbrock Victor CNC Cylinder Head (Part #50149)
• Fully CNC-ported intake and exhaust ports
• Pre-cut valve seats and guides
• Valve job matched to COMP Cams LS-style 8 mm valvetrain

Ideal For

This cylinder head is ideal for Jeep enthusiasts and engine builders looking to upgrade their 4.0L inline-six for improved airflow, durability, and valvetrain flexibility. It suits street performance builds, mild off-road applications, and restoration projects where factory heads are worn or limiting power potential. The Victor CNC head is also a solid choice for those planning to install aftermarket camshafts and valve springs that require LS-style valvetrain compatibility.