The Hemi is also available in a 6,059 cc (6.059 L; 369.7 cu in) version.[17] The engine's bore is 4.06inches, and many other changes were made to allow it to produce 425 hp (317 kW; 431 PS) at 6200 rpm and 420 pound force-feet (569 N·m) of torque at 4800 rpm. The engine block is different from the 5.7, with revised coolant channels and oil jets to cool the pistons. A forged crankshaft, lighter pistons, and strengthened connecting rods add durability. A cast aluminum intake manifold is tuned for high-RPM power and does not include variable-length technology. Chrysler's Multi-Displacement System is not used on the 6.1.[WIKI]
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