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Pilawt
An O-470 weighs about 160 pounds more than an O-360. If there's anything a 177 doesn't need, it's more weight in the nose.A 177 w/ an O-470. Now THAT would be money.
The wing was mounted as far back as possible on the C-177, so as to locate the spar carry-through behind the pilot's head and to improve visibility in turns. Result: max forward CG in a C-177 is only 5% of mean aerodynamic chord. By comparison it's 15.5% MAC on a C-172. That's why the C-177 needed the added pitch authority of a stabilator; and why the 40° of flap as originally designed had to be limited to 30°.