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how much horsepower
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autobody View Drop Down
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Joined: 05 Jan 2015
Location: United States
Points: 56 		Post Options Post Options   Thanks (0) Thanks(0)   Quote autobody Quote  Post ReplyReply Direct Link To This Post Topic: how much horsepower
    Posted: 02 Sep 2015 at 8:41pm
How much horsepower will a 4.5 bore 6 inch stroked d 17 engine turn the head has big vavles and has been ported.
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Joined: 12 Sep 2009
Points: 20528 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 07 Sep 2015 at 5:27am
That measures to be 382 cubes. If you maintain the same efficiency as the original D-17 engine at 53 HP, you should have 90 HP. Of course, you give zero information on compression ratio, camshaft grind, or carburetor size.
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autobody View Drop Down
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Points: 56 		Post Options Post Options   Thanks (0) Thanks(0)   Quote autobody Quote  Post ReplyReply Direct Link To This Post Posted: 09 Sep 2015 at 6:54pm
Compression 12.1 cam regrind 190 duration vavle lift .532 carb ms tsx 916
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mgburchard View Drop Down
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Points: 1123 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mgburchard Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 2015 at 12:17pm
Compression is good I would hope 190 is at .050 on cam with a bigger carb you should break the PTO at 100hp and who knows if its 20 more or 50 more after that.
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