The 5.7-liter HEMI® Magnum V-8

Auburn Hills, Mich. -- While completely re-engineered from the legendary 426 HEMI V-8 that powered Chrysler muscle cars of the 1960s, two features earn the new 5.7-liter HEMI power plant its HEMI name.

• The hemispherically shaped combustion chamber designed to accommodate large valves and put the spark plugs close to the center of the combustion chamber
• The cross-flow valve arrangement that is perpendicular to the crankshaft Centerline

Facts and Features

• The 5.7-liter HEMI® Magnum V-8 engine is an internally balanced pushrod (OHV) 90-degree V-8. The cast iron block is a deep skirt and cross-bolted design with cylinder bore spacing the same as the engine it replaces.
• The aluminum cylinder features a two-valve per-cylinder, hemispherical combustion chamber with dual spark plugs and a coil over plug ignition for best-in-class airflow and power. At an impressive 345 hp and 375 lb.-ft of torque, the 5.7-liter HEMI cranks out 41 percent more power and 12 percent greater torque than the 5.9-liter Magnum V-8 it replaces. And the power plant is 56 pounds lighter than its predecessor.
• An Integrated Air Fuel Module (IAFM) incorporates the function of 26 individual components in the induction and fuel system, thereby reducing cost, weight and engine plant complexity.
• The 5.7-liter HEMI marks Chrysler Group’s first application of an electronic throttle control system in a rear-wheel-drive vehicle. The system uses a DC motor with reduction gears to open and close the throttle, for optimal control of the airflow into the engine.
• A combination of the 5.7-liter HEMI and the new 545RFE five-speed automatic transmission will improve fuel efficiency for the heavy-duty pickup by 8-10 percent over the 5.9-liter V-8.
• A systematic approach to sealing, using premium elastomeric materials and state-of-the-art practices, helps ensure a leak-free, weep-free engine.

The power plant’s simple and efficient design means servicing and repairs are easier and less costly.

Specifications