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408 10.9 comp, e85 ideas (help)

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Old Feb 13, 2013 | 04:25 PM
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Default 408 10.9 comp, e85 ideas (help)

I have a 408 with mast heads at 10.9 to 1. Wanting to go turbo. Goal are 650 700 rwhp. Can i run 93 octane and reach my goal? I have the opion of switching to e85 also. Or change heads to 70 cc and 10.2 compression and run pump gas? I wont need a ton of boost to reach my goals. On e85 not sure what i need. I already have a aeromotive stealth fuel cell with a1000..intake is holly high ram. Need injectors and regulator.Looking at the turbonetics 7675 1.15ar BB. Thanks
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Old Feb 13, 2013 | 04:39 PM
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Dont be afraid of high compression and e85.
higher cp will let you keep timing down and boost which is always a plus.
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Old Feb 13, 2013 | 04:45 PM
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With that big of engine 8-12psi will put you well in or over you hp goal.
If you have any reason you may want to stay pump gas go 10.2 and spray meth to be safe, that way if you get stuck using pump gas you will not have the detonation problem
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Old Feb 13, 2013 | 06:40 PM
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I would use E85, high compression, add another fuel pump, and use a bigger turbo. Fic1600 injectors and Magnafuel regulator.
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Old Feb 13, 2013 | 09:54 PM
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a 408 with a hi ram on E85 should already be well into the 500whp area. You need to get it on E85 and run a s480 with the 96mm turbine, or at the very least a PT88, would not even consider the 7675 for your car
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Old Feb 14, 2013 | 12:11 AM
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my little 383 (10.5 to 1)made 800 on just pump gas and 17 psi if that helps
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Old Feb 14, 2013 | 12:16 AM
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Originally Posted by runsfromdacops
my little 383 (10.5 to 1)made 800 on just pump gas and 17 psi if that helps
What was ur set up? Turbo Size? Fuel injectors? Straight gas or meth kit? Thanks
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Old Feb 14, 2013 | 05:44 PM
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i would just direct you to my build thread but some *** hat deleted it.
800 was on just pump gas. she made 875 with pump and meth with 14* of timing
shes still got more in her and at hte end of the year ill tune it on e85 and shoot for 1K
i have twin rear mounted PTE billet 5858s (ex .82)
FIC 1150cc injectors
twin bosh o44s
prc 2.5 317 heads
224R cam from tsp (not much bigger then a ls6 cam)
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