635HP at 20# on E85 seems low, Ideas?

Shadow Grey 03

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I would have done e85 but I don't have any pumps out here that sell it, so I have to buy it. There's an atv/off road toy dealer down the street from my house that sells c16 so it was easier for me to get that at the time.

I understand. What is C16 now? $20/gallon?
 

04OWwhipple

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Compression test shows pretty much 162-165 PSI across all 8 cylinders. Put a little oil and it picks up about 10 PSI to right around 175 PSI.
 

blwn89gt

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Thanks man! Yeah, my pump gas tune on less boost (3.5 pulley) used to make 616whp

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Same shit here. Pump gas, 3.5 pulley I made 610. With some race gas mixed in it made 660.


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04OWwhipple

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Same shit here. Pump gas, 3.5 pulley I made 610. With some race gas mixed in it made 660.


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And that is exactly why I think 3.25 pulley on E85 should make easily more than 635 without breaking a sweat.

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blwn89gt

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And that is exactly why I think 3.25 pulley on E85 should make easily more than 635 without breaking a sweat.

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Originally I had the 3.25 on the car but my tuner was like put the 3.50 on it for pump gas. I backed out of doing e85 last minute but now I’m thinking of doing it since the mega squirt came out and has the flex sensor capability. He said with e85 I’d be over 650 easy with the 3.25



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