The Pentastar engines were created by Chrysler engineers to replace the V6 powerplants used by Chrysler, Dodge, Jeep, and Ram. It is now Chrysler’s sole V6.
The Pentastar 3.6 liter V6 engine pumps out 305 horsepower in the Dodge Challenger and the 2013 Ram. Coupled with the eight-speed automatic in the Charger, it equals prior-generation Hemi V8 0-60 times (6.6 seconds).
The 3.2 liter V6 hits 271 horsepower, with 239 lb-ft of torque.
A 3-liter twin-turbo version was projected to hit 400 horsepower (Maserati has one, reportedly very loosely based on the Pentastar design). Direct injection is coming, around calendar-year 2014-16. It might be waiting for low-sulfur gasoline, which is being pushed by the auto industry and opposed by the oil industry.
The Pentastar enabled major V6 engine components to be cut from 189 parts to just 32. Exhaust manifolds are cast directly into the cylinder head (32 different exhaust manifolds had been used). Intake assemblies, which together accounted for 32 different part numbers, have been slashed to two upper and two lower assemblies.
Camshaft variations have dropped from 14 to four; fuel rail assemblies dropped from 14 to two. (These figures were accurate before the 2013 Ram and the 3.2 were announced.)
Fully dressed, the 3.6 liter Pentastar V-6 is 94 pounds lighter than the 3.7-liter engine (Grand Cherokee) and 42 pounds lighter than the 3.5-liter (Chrysler 300).
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