392 SRT 6.4L Hemi Engine & 8HP70 Trans Swap

392 SRT 6.4L HEMI Engine & 8HP70 Transmission Swap

Upgrade your project with a 392 SRT 6.4L HEMI V8 and 8HP70 8-speed automatic transmission. This combination is designed for Dodge/Chrysler performance builds, restorations and custom engine swaps.

The 6.4L HEMI has 392 cubic inches (6.4L) of displacement. In Challenger SRT 392 applications, it produces up to 485 HP and 475 lb-ft of torque. Mopar parts documentation also lists the 8HP70 8-speed automatic transmission for the 2018 Challenger SRT 392.

Key Specifications

• Engine: 6.4L / 392 HEMI V8
• Displacement: 392 cu. in. / 6.4L
• Configuration: V8
• Aspiration: Naturally aspirated
• Fuel: Gasoline
• Horsepower: Up to 485 HP, application dependent
• Torque: Up to 475 lb-ft, application dependent
• Transmission: 8HP70 8-speed automatic
• Drive: Primarily RWD applications

Common Applications

Depending on the exact engine and transmission configuration:

• Dodge Challenger SRT 392
• Dodge Challenger R/T 392
• Dodge Challenger R/T Scat Pack
• Dodge Challenger T/A 392
• Dodge Charger SRT 392
• Dodge Charger R/T Scat Pack
• Dodge Durango SRT 392
• Jeep Grand Cherokee SRT
• Custom Mopar performance builds

Custom Swap Requirements

For vehicles that did not originally use this powertrain, installation may require:

• Engine and transmission mounts
• ECU/PCM and TCM
• Wiring harness
• Driveshaft modifications
• Fuel-system components
• Cooling system upgrades
• Exhaust modifications
• CAN-bus/electronic integration
• Custom tuning