2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

Unleash 485 Horsepower with a Genuine Scat Pack Powertrain

Are you dealing with a blown engine in your beloved Scat Pack, or perhaps you are planning the ultimate modern HEMI restomod swap for a classic Mopar build? Sourcing individual engine block components and trying to mate them to a compatible transmission is a frustrating, time-consuming process that often leads to compatibility nightmares and blown budgets. You cannot afford to rely on mismatched salvage yard parts when dealing with the incredible power output of a modern Dodge muscle car. We know you need a faster, more capable solution.  2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

Step up to a fully restored ride with this complete 6.4L 392 HEMI V8 engine and 8HP70 automatic transmission powertrain. Specifically engineered for the 2015-2023 Dodge Challenger and Charger Scat Pack and SRT 392 models, this direct-replacement assembly ensures your vehicle delivers the aggressive 485 horsepower and 475 lb-ft of torque it was originally designed for, giving you the absolute confidence to turn the key and dominate the street or track.    2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

Core Features & Direct Benefits

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• Massive 6.4L 392 Cubic Inch V8: Arrives as a fully assembled, naturally aspirated engine block.  2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

  • Benefit: Delivers instant, raw throttle response and the iconic, aggressive exhaust roar that smaller displacement engines simply cannot replicate.    2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

• TorqueFlite 8HP70 8-Speed Automatic Transmission: Precision-engineered to handle immense torque loads.

  • Benefit: Provides lightning-fast paddle-shifting capabilities on the track while drastically improving highway fuel efficiency during your daily commute.    2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

• Direct OEM Fitment: Built utilizing exact factory specifications and mounting points.

  • Benefit: Allows you to safely retain your original factory mounting alignment without any dangerous modifications or excessive fabrication.    2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

• Complete Drop-In Powertrain: Engine and transmission are already mated together.

  • Benefit: Saves you dozens of hours of labor time and money, eliminating the need to source a separate flexplate, torque converter, and bellhousing hardware.  2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

Deep Dive: How to Get the Most Out of Your 392 HEMI

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When installing this massive 6.4L engine and 8HP70 transmission combo, proper fluid and break-in procedures are essential. Always prime the engine oil system before your first start-up to prevent dry-starting the camshaft and bearings. For the 8HP70 transmission, ensure you use the exact Mopar-approved ZF 8-speed transmission fluid, as these advanced gearboxes are highly sensitive to fluid viscosity and temperature levels. Finally, if you are performing a swap into an older chassis, a standalone ECU and custom wiring harness will be required to command the drive-by-wire throttle and electronic shifting.

Technical Specifications

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Frequently Asked Questions (FAQ)

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• Q: Does this include the engine computer (ECU) and wiring harness?

  • A: Generally, drop-in replacement engines arrive as the long block and transmission only. You will seamlessly transfer your original factory wiring harness, ECU, and accessories (like the alternator and AC compressor) from your existing Scat Pack to this new unit.    2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

• Q: Can I put this 6.4L engine into my 5.7L R/T or V6 SXT model?

  • A: While it physically fits in the engine bay of 2015-2023 Challengers and Chargers, upgrading from a V6 or 5.7L to a 392 HEMI is not a direct plug-and-play swap. It requires a different ECU, wiring harness, upgraded cooling systems, and stronger rear differential components to handle the massive torque increase.  2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission

• Q: Does the 8HP70 transmission come pre-filled with fluid?

  • A: No, for safe freight shipping, all major fluids are drained. You must fill both the engine with the correct 0W-40 synthetic oil and the transmission with Mopar 8-speed fluid prior to operation.    2015-2023 Dodge Challenger & Charger Complete 6.4L 392 HEMI V8 Engine & 8HP70 Automatic Transmission