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how much horsepower

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Forum Name: Pulling Forum
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=111393
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Topic: how much horsepower

Posted By: autobody
Subject: how much horsepower
Date 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.

Replies:

Posted By: DrAllis
Date 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.

Posted By: autobody
Date Posted: 09 Sep 2015 at 6:54pm

Compression 12.1 cam regrind 190 duration vavle lift .532 carb ms tsx 916

Posted By: mgburchard
Date 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.