[Blueclyde]

Originally Posted by Bob Cosby

Nobody does "gross" HP anymore. Most (if not all) converted some 40 years ago.

The 2013's 5.8 is SAE certified at 662 net HP.

Source: http://www.autoblog.com/2012/04/26/2...30-pound-feet/

SAE what? SAE alone doesn't tell much.

Originally Posted by motorhead

The new motor is to J1349 and so was the 5.4.

Also as of 2005 if a manufacturer claims to be SAE certified is has to use a third party.

OK, I hadn't seen that referenced anywhere.