Edelbrock Gen III HEMI Long Block Engine
2003+ Mopar 426ci (7.0L) Gen III HEMI Engines
46125
Overview:
The Edelbrock 426ci Gen III HEMI Long Block Engine is a robust foundation designed for high-performance Mopar enthusiasts seeking a powerful and reliable base for their builds. Originally developed as the core for Edelbrock’s E-Force Supercharged crate engine, this 7.0L long block is equally suited for naturally aspirated or forced induction applications. Its compact design ensures compatibility with a wide range of platforms, allowing for straightforward installation without extensive modifications to the engine bay or hood.
Built to deliver exceptional low-end torque and durability, this engine is ideal for those aiming to create a high horsepower Mopar setup with confidence and precision. Whether you are building a street machine, drag racer, or a custom project, the Edelbrock 426ci Gen III HEMI long block offers a solid, performance-oriented starting point.
Key Features:
Engineered with quality components and designed for maximum power potential, the Edelbrock 426ci Gen III HEMI Long Block includes:
- New Mopar iron 392 block providing a strong and durable foundation
- Forged and balanced Manley 4340 crankshaft for enhanced strength and reliability
- Manley forged H-beam connecting rods engineered for high stress applications
- Manley forged aluminum pistons with 5cc dish for a 9.9:1 compression ratio
- 4.090" bore and 4.050" stroke combination optimized for torque and power
- Edelbrock Performer RPM cylinder heads (#61099) designed for improved airflow and combustion efficiency
- Camshaft with 226° intake / 234° exhaust duration, .619"/.612" lift, and 114° lobe separation angle for a balanced power curve
- Stock Gen III HEMI rocker arms for 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 performance under demanding conditions. The foundation is a brand new Mopar iron 392 block, chosen for its strength and thermal stability. The rotating assembly features a forged 4340 steel crankshaft and Manley forged H-beam rods, components known for their ability to withstand high RPM and boost pressures.
Manley forged aluminum pistons with a 5cc dish maintain a conservative 9.9:1 compression ratio, enabling safe operation with forced induction on 91 octane pump fuel. The cylinder heads are Edelbrock Performer RPM units, engineered to optimize airflow and combustion efficiency, contributing 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 street and strip applications, while the iron block and forged internals ensure durability under high-performance conditions. 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 and newer. 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 (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.
