GM Releases 2013 bogus HP ratings at PRI show

Ed Wright · 12-17-2012, 01:52 PM

I mis -typed the cubic inches, and was told 312 HP. Isn't that the 12-1 compression engine?
I might need to build a Mustang.

69Cobra · 12-17-2012, 02:35 PM

The 352 is 11.25 CR and I was wrong on the 428 in '10. It was factored at 375 and now the 427 is 425 hp for a 50 hp hit from the factory.

12-17-2012, 01:52 PM	#1
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: GM Releases 2013 bogus HP ratings at PRI show I mis -typed the cubic inches, and was told 312 HP. Isn't that the 12-1 compression engine? I might need to build a Mustang. __________________ Ed Wright 4156 SS/JA

12-17-2012, 02:35 PM	#2
69Cobra Senior Member Join Date: Aug 2007 Location: California, Ky Posts: 669 Likes: 62 Liked 2 Times in 2 Posts	Re: GM Releases 2013 bogus HP ratings at PRI show The 352 is 11.25 CR and I was wrong on the 428 in '10. It was factored at 375 and now the 427 is 425 hp for a 50 hp hit from the factory. __________________ Kris Rachford 69 Cobra 428CJ 4 Speed C/S 3032

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