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Old 12-01-2017, 07:50 PM   #15
Dave in MN
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Join Date: May 2010
Location: Jordan, MN
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Default Re: OHV conversion durability/longevity

Quote:
Originally Posted by G_Don View Post
Thanks for all the information. It seems as though the miller OHV would be the one to look into if I decide on an OHV.

Is it a pretty simple bolt on procedure, or is there a lot of tuning involved?

One other question. How much HP gain is the OHV compared to a 7:1 flathead? I'd hate to spend a sizable amount on an OHV, when I could get similar power out of a flathead setup, or am I just delusional thinking it'll even be close? lol

Thanks again!
Gordy
The installation was a simple bolt-on. The tuning was also simple.

The head on a full pressure "B" produced 115 hp with two 97 Strombergs. It produced about 90 hp at 2800 rpm with the dual carbs and other equipment I had on it. Personally, I would de-tune it and and target 80 hp at 2800 rpm. At this output, the head, crank and other drivetrain components should be very reliable.

Good Day!
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