GEN III HEMI 345 Crate Engine Assembly

The Mopar Performance 68303088AD is a complete GEN III HEMI V8 crate engine assembly, offering 383 horsepower and 417 lb.-ft. of torque. This engine is based on the 345 HEMI® found in 2015 and newer Dodge Challengers. It includes the complete engine assembly, water pump, flywheel and clutch, front sump oil pan, intake manifold with throttle body, fuel injectors, and coil packs. Key internal components include a cast iron block with 4-bolt powder metal caps, nodular iron crank, powdered metal connecting rods, and hypereutectic aluminum pistons. It also features nodular iron camshaft and 319 aluminum cylinder heads with HEMIspherical combustion chambers. The intake valve size is 52.1 mm, and the exhaust valve size is 39.4 mm, with a compression ratio of 10.5:1 and a peak RPM of 5600. Premium fuel is recommended. For installation, please note that purchasing an engine controller kit (P/N: 77072455AH or 77072453AG) is required. Additionally, it's highly likely that an engine swap oil pan and new headers will be necessary for retrofit applications, though compatible components from brands like Milodon and Holley are available. Tremec manual transmission conversions for the 5.7L are also offered. This engine comes with a 24-month unlimited mile parts warranty.