Chrysler Officially Introduces New 3.6L V-6 "Pentastar" Engine

With the 2011 Jeep Grand Cherokee reveal at the New York Auto Show today, Chrysler also introduced its new V-6 engine. Named "Pentastar," appropriately enough, the 3.6L engine uses double-overhead camshafts, coil-on-plug ignition, and runs on regular and E85 fuels without degradation to performance or economy, according to Chrysler.

In the Grand Cherokee, the V-6 produces 280 horsepower 6400 rpm and 260 lb.-ft. of torque at 4800 rpm. Chrysler says 90% of peak torque is available from 1600 to 6400 rpm. The V-6 will reach through the Chrysler, Jeep and Dodge lineups, contributing an important two mile per gallon increase to Chrysler's CAFE score.

3.6L, DOHC, 24-valve "Pentastar" V-6 Specs:

• Bore x stroke: 96 x 83 mm
• Valvetrain: Double-overhead cam with roller finger followers and hydraulic lash adjusters; dual independent cam-torque actuated phasers
• Fuel injection: Multi-point port fuel injection
• Construction: High-pressure die-cast aluminum cylinder block and semi-permanent mold aluminum cylinder head
• Maximum engine speed: 7200 rpm
• Fuel requirement: E85 (Ethanol) or unleaded regular, 87 octane (R+M)/2
• Emission capability: PZEV

Source: Chrysler