Edelbrock GEN 3 7.0L Long Block Engine

2003–2025 Dodge Challenger, Charger, Durango, Jeep Grand Cherokee, Grand Wagoneer, Wrangler, Ram 2500 & 3500 6.4L 392

Part #: 46125

Overview

The Edelbrock 426ci Gen III HEMI Long Block Engine is a high-performance foundation designed specifically for Mopar enthusiasts and professional builders. This 7.0L (426 cubic inch) long block is engineered to deliver exceptional torque and durability, making it an ideal base for naturally aspirated or forced induction builds. Originally developed as the core for Edelbrock’s E-Force Supercharged crate engine, it offers versatility and reliability for street machines, drag racers, and custom projects alike.

Its compact design ensures compatibility with a wide range of Mopar Gen III HEMI platforms from 2003 through 2025, including popular models like the Dodge Challenger, Charger, Durango, Jeep Grand Cherokee, Grand Wagoneer, Wrangler, and Ram 2500/3500. This long block provides a straightforward installation process without requiring extensive modifications to the engine bay or hood.

Key Features

Built with premium components and engineered for maximum power potential, the Edelbrock 426ci Gen III HEMI Long Block includes:

• New Mopar iron 392 engine block for strength and thermal stability
• Forged and balanced Manley 4340 steel crankshaft for enhanced durability
• Manley forged H-beam connecting rods designed for high-stress applications
• Manley forged aluminum pistons with a 5cc dish, achieving a 9.9:1 compression ratio
• 4.090" bore and 4.050" stroke combination optimized for torque and power delivery
• Edelbrock Performer RPM cylinder heads (#61099) engineered for improved airflow and combustion efficiency
• Camshaft featuring 226° intake / 234° exhaust duration, .619"/.612" lift, and 114° lobe separation angle for a balanced power curve
• Stock Gen III HEMI rocker arms ensuring proven valvetrain durability
• Compatible with Edelbrock E-Force supercharger for power outputs exceeding 800 horsepower and 760 ft-lbs of torque

Construction & Design

The Edelbrock 426ci Gen III HEMI Long Block is meticulously crafted using premium materials to ensure longevity and high performance under demanding conditions. At its core is a brand new Mopar iron 392 block, selected for its robust strength and excellent thermal stability. The rotating assembly features a forged 4340 steel crankshaft and Manley forged H-beam connecting rods, components renowned for their ability to withstand high RPMs and boost pressures.

Manley forged aluminum pistons with a 5cc dish maintain a conservative 9.9:1 compression ratio, allowing safe operation with forced induction on 91 octane pump fuel. The Edelbrock Performer RPM cylinder heads are designed to optimize airflow and combustion efficiency, contributing significantly to the engine’s impressive torque and horsepower capabilities.

Performance & Sound

When paired with the Edelbrock E-Force supercharger (sold separately), this long block can produce upwards of 808 horsepower and 762 ft-lbs of torque, delivering exhilarating acceleration and robust low-end grunt. The camshaft and valvetrain setup provide a broad powerband suitable for both street and strip applications. The iron block and forged internals ensure durability under high-performance conditions, while the engine’s signature HEMI sound is aggressive yet refined, reflecting its race-inspired heritage.

Installation & Fitment

The compact design of the Edelbrock 426ci Gen III HEMI Long Block allows for a seamless swap into most Mopar Gen III HEMI-compatible platforms from 2003 to 2025. Its dimensions are engineered to fit without requiring modifications to the engine bay or hood, simplifying the installation process. This makes it an excellent choice for builders looking to upgrade or replace their existing Gen III HEMI engines with minimal hassle.

What's Included

• New Mopar iron 392 long block engine block
• Forged and balanced Manley 4340 crankshaft
• Manley forged H-beam connecting rods
• Manley forged aluminum pistons with 5cc dish
• Edelbrock Performer RPM cylinder heads (#61099)
• Camshaft with specified duration and lift
• Stock Gen III HEMI rocker arms

Ideal For

This long block is perfect for Mopar enthusiasts and professional builders aiming to create high-horsepower forced induction setups or naturally aspirated performance engines. It serves as an excellent foundation for street rods, muscle cars, drag racers, and custom builds requiring a reliable and powerful Gen III HEMI engine platform.

Edelbrock is one of the most recognized names in American performance, building hardware for horsepower-minded street and race builds. From intake manifolds and carburetors to EFI and supporting engine components, Edelbrock’s lineup is designed to improve airflow, throttle response, and overall engine performance for classic and modern platforms alike.