Following Automotive News' report last week of Chrysler's plans to idle its Mack II plant with the end of production for the 3.7-liter V-6, it looks like the engine's V-8 relative could be headed for the chopping block as well. Demand for the Pentastar V-6 is so strong that the company is reportedly in discussions with the City of Detroit on an incentive package to switch the Mack I line that currently builds the 4.7-liter PowerTech V-8 to build Pentastar V-6 engines. The proposed investment could approach $200 million and add 250 manufacturing jobs.
The overhead-cam 4.7-liter V-8 was originally introduced in the 1999 Jeep Grand Cherokee as a replacement for the OHV 5.2-liter V-8. The engine got a substantial power boost in 2008 with twin-spark heads and a higher compression ratio. However, even in that iteration, the engine barely makes more power than the highest-output Pentastar V-6, which makes 305 hp and 269 lb-ft of torque in the upcoming 2013 Ram 1500. Customers looking for more power usually opt for the popular 5.7-liter Hemi V-8.
The 4.7-liter V-8 used to serve in a variety of Chrysler vehicles including the Dakota pickup and the Jeep Grand Cherokee. However, following launch of the latest-generation of the latter in 2010 and the discontinuation of the former in 2011, the engine has only been available in the Ram 1500
If Chrysler receives the incentive package it is seeking from Detroit, production of the Pentastar on the Mack I line could begin in late 2013.
Source: Automotive News (subscription required)