Have you tried a Holley Ultra HP , I have.

Old Nov 11, 2016 | 06:22 PM
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Have you tried a Holley Ultra HP , I have.

https://www.summitracing.com/parts/h...erview/:argue:
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Old Nov 12, 2016 | 07:20 AM
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HP or the XP ?
Work pretty good on the E85 ?
Did you have to re-calibrate the Carb after you got it?
Did you get any noticeable power increase?

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Old Nov 12, 2016 | 08:05 AM
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XP - The thing was perfect out of the box, did not have touch a thing other than idle and float levels.

Just did a back to back against race gas and my tricked 850 and picked up 24 hp..

Awesome carb
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Old Nov 12, 2016 | 08:26 AM
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Wow... Thats a good jump....
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Old Nov 12, 2016 | 12:26 PM
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Torque numbers went up more also, I think most of the bump came from the e-85.

The flat tappet cam I'm using has 282 @ .050 duration, and with this carb we were able to get a clean idle at 950 rpm.

I've heard the gas carbs need to be jetted but mine was on the money.
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Old Nov 12, 2016 | 01:48 PM
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Stout Cam for @ .050.... Compression must be good?... 14-15.0.1..
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Old Nov 12, 2016 | 03:48 PM
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12.5, not a new build just converted to e-85.

I took out ten degrees of duration Bob, I thought it was mild. Hahahaha
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Old Nov 12, 2016 | 04:56 PM
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Auhhhh,,, I see...
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