Gen 3 6.4L 392 Hemi Crate Engine by Mopar Performance - 6.4L 485hp 68303090AB




Part number: 68303090AB

Step up to the next level of performance with the SRT 6.4L HEMI® Engine. With 485 hp and 475 lb.-ft. of torque, this complete engine assembly includes a water pump, flywheel and clutch, front sump oil pan, intake manifold with throttle body, fuel injectors and coil packs.
Ram truck or other applications may require modifications. This is not a direct replacement engine for all factory equipped 5.7 or 6.4l vehicles. Knowledge and execution of any modifications necessary are solely the responsibility of the installer.

These engines are not equipped with MDS (the Multiple Displacement System that switched between 4 and 8 cylinder mode) that some factory applications were equipped with.

• 392 cu. in.
• 103.9 mm Bore
• 94.6 mm Stroke
• Cast iron block with 4-bolt powder metal caps
• Forged steel crank material
• Powdered metal, floating pin connecting rods
• 6,400 peak RPM
• Hypereutectic aluminum piston material
• Nodular iron camshaft
• 319 aluminum, HEMIspherical combustion chamber cylinder heads
• 54.3 mm intake valve size
• 42 mm exhaust valve size
• 10.9:1 compression ratio
• Premium fuel recommended

*To achieve noted power level, you must purchase crate engine w/engine controller kit (P/N:77072451AG or 77072454AI)

Parts warranty: 24 months UNLIMITED miles

 It's highly likely you'll need an engine swap pan, and new headers, as these don't really fit retrofit applications. We do sell Milodon and Holley components to do this!

NEED A TRANSMISSION? We offer Tremec manual transmission conversions for the 6.4L.