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      05-18-2011, 02:57 PM   #19
Second Lieutenant

Drives: E46 M3, E92 M3
Join Date: Sep 2009
Location: PA

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Originally Posted by mkoesel View Post
Ford Coyote V8
Hyundai Tau V8
Infiniti VK56VD V8
Lexus 2UR-GSE V8

I'll leave off Mercedes M273 V8 and Chrysler 5.7L Hemi V8 because they come up just short in HP (though their larger displacement brothers - M156 and 6.1L Hemi, respectively do make 400hp+), and probably don't appreciably outperform the S65 in efficiency anyway. Of course, they also don't use them is a lighter 3500lb car like the M3, so it is impossible to judge their efficiency in a similar application.
nice list of engines..
However, ALL of them are over 4-liter displacement engines, which made them officially invalid to be compared in the 3 - 4 liter capacity class category by default.
and if I'm not mistaken, many of engines you listed are rated UNDER 400 hp, right?