426 hemi

Check out these 426 hemi mopars with #moparbro fred_eazy21 !
The 426 HEMI engine, originally produced by Chrysler in the 1960s and 1970s, has become legendary for its performance and is still popular today in various setups, including crate engines and stroker kits. Here are some performance statistics and common setups for the 426 HEMI:
Stock 426 HEMI
Horsepower: Approximately 425 hp @ 5000 RPM
Torque: Approximately 490 lb-ft @ 4000 RPM
Compression Ratio: 10.25:1
Crate Engines
Chrysler's Mopar division offers modern 426 HEMI crate engines with updated technology and increased performance.
Mopar 426 HEMI Crate Engine (Gen III)
Horsepower: Around 525 hp
Torque: Approximately 510 lb-ft
Compression Ratio: 10.9:1
Fuel System: EFI (Electronic Fuel Injection)
Displacement: 426 cubic inches (7.0 liters)
Stroker Kits
Stroker kits increase the engine displacement by increasing the stroke of the crankshaft. This generally leads to more torque and power. For the 426 HEMI, various stroker kits are available to enhance performance further.
Common 426 HEMI Stroker Kit Options
528 HEMI Stroker Kit
Displacement: 528 cubic inches
Horsepower: Can exceed 600 hp depending on the build
Torque: Typically around 650 lb-ft or more
Components: Forged crankshaft, pistons, and rods, high-performance camshaft
572 HEMI Stroker Kit
Displacement: 572 cubic inches
Horsepower: Often around 700-800 hp with appropriate tuning
Torque: Can reach 700 lb-ft or more
Components: Custom crankshaft, high-compression pistons, high-flow cylinder heads, performance intake manifold
Key Upgrades for Enhanced Performance
Cylinder Heads: High-flow aluminum heads can significantly increase airflow and power.
Camshaft: A performance camshaft can provide more lift and duration, improving horsepower and torque.
Intake and Exhaust Systems: Upgraded intake manifolds and headers improve airflow, leading to better engine breathing and increased power.
Fuel System: Upgrading to a modern EFI system can enhance fuel delivery and tuning capabilities.
Example Performance Setup
A fully built 426 HEMI with a 572 stroker kit might include:
Displacement: 572 cubic inches
Horsepower: 750-800 hp
Torque: 700+ lb-ft
High-flow aluminum cylinder heads
High-performance camshaft
Electronic fuel injection system
Long tube headers and free-flowing exhaust system
These setups provide a blend of classic HEMI power with modern reliability and performance enhancements. Let me know if you need more specific details or assistance with a particular build!
Let's compare the performance statistics of a Chrysler 300 SRT8 with a stroked 6.1L HEMI to a 426 HEMI and a Dodge Magnum with a 426 HEMI crate motor and a Whipple supercharger.
Chrysler 300 SRT8 with a Stroked 6.1L HEMI to 426 HEMI
Engine Displacement: 426 cubic inches (7.0 liters)
Power Output: Approximately 550-600 horsepower (naturally aspirated)
Torque: Approximately 540-560 lb-ft
0-60 mph: Around 4.0-4.5 seconds
Quarter Mile: Approximately 12.0-12.5 seconds
Dodge Magnum with a 426 HEMI Crate Motor and Whipple Supercharger
Engine Displacement: 426 cubic inches (7.0 liters)
Power Output: Approximately 750-900 horsepower (with Whipple supercharger)
Torque: Approximately 700-800 lb-ft
0-60 mph: Around 3.5-4.0 seconds
Quarter Mile: Approximately 10.5-11.5 seconds
Key Differences
Power and Torque: The supercharged Dodge Magnum has a significant advantage in both horsepower and torque due to the addition of the Whipple supercharger.
Acceleration: The Dodge Magnum's supercharger allows it to achieve faster 0-60 mph and quarter-mile times compared to the naturally aspirated Chrysler 300 SRT8.
Performance Characteristics: The supercharged Magnum offers more aggressive acceleration and overall higher performance due to forced induction, whereas the Chrysler 300 SRT8 provides strong performance with a naturally aspirated setup.
These statistics are general estimates and actual performance can vary based on specific tuning, additional modifications, and driving conditions.
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