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5.7-liter HEMI Specs & Features

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PostPosted: Sat Jul 10, 2004 12:48 am    Post subject: 5.7-liter HEMI Specs & Features Reply with quote

Auburn Hills, Mich., June 10, 2004 - No other engine in U.S. history has the heritage and recognition of the Chrysler Group HEMI®. While completely re-engineered from the legendary 426 HEMI V-8 that powered Chrysler muscle cars of the 1960s, the two features that earn the new 5.7-liter HEMI power plant its HEMI name are:

    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 crank-shaft centerline

Facts and Features

    In the Chrysler 300C, Dodge Magnum RT and the all-new 2005 Jeep® Grand Cherokee, the 5.7-liter HEMI is equipped with Chrysler Group's Multi-Displacement System (MDS), which turns off four of the cylinders when V-8 power is not needed, giving customers up to a 20 percent improvement in fuel economy.
    The 5.7-liter HEMI engine is an internally balanced pushrod, OHV 90-degree V-8.
    The cast iron block is a deep-skirt design with cross-bolted main bearing caps.
    The aluminum cylinder heads feature two valves per cylinder, hemispherical combustion chambers with dual spark plugs and coil-over-plug ignition.
    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 in a rear-wheel-drive vehicle.
    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.


    Type and description: Eight cylinders, 90-degree V-type, liquid cooled
    Displacement: 345 cu. in. (5.7-liter)
    Bore x stroke: 3.92 in. x 3.58 in. (99.5 mm x 90.9 mm)
    Valve system: Pushrod-operated overhead valves, 16 valves (eight deactivating, eight conventional when equipped with Multi-Displacement System), hydraulic roller lifters
    Fuel injection: Sequential, multi-port, electronic, returnless
    Construction: Deep-skirt cast iron block with cross-bolted main bearing caps. Aluminum alloy heads with hemispherical combustion chambers
    Compression ratio: 9.6:1
    Power (SAE net): 345 hp (257 kW) @ 5400 rpm, (61.0 hp/L), truck applications; 340 hp (254 kW) @ 5000, passenger vehicle applications
    Torque (SAE net): 375 lb.-ft. (508 Nm) @ 4200 rpm, truck applications; 390 lb.-ft. (525 Nm) @ 4000, passenger vehicle applications
    Max. engine speed: 5800 rpm (electronically limited)
    Fuel requirement: Unleaded mid-grade, 89 octane (R+M)/2 - recommended; Unleaded regular, 87 octane (R+M)/2 - acceptable
    Oil capacity: 7 qt. (6.6L)

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