Quote:
Originally Posted by strych9
354 CID, to be exact.
They removed the cast-iron liners and coated the cylinders instead.
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The aluminium 5.4 used in the 2011/12 GT500 never had cast iron liners. They used a cylinder bore coating system they developed called the Plasma Transferred Wire Arc (PTWA) process.
http://www.autoblog.com/2010/02/08/2...e-loses-120-p/