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80lb injectors for 6-700whp(e85?)

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Old Sep 9, 2012 | 06:26 PM
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Default 80lb injectors for 6-700whp(e85?)

As the title states will 80lb injectors supply enough fuel for 6-700whp using e85?

Injectors are going on another junkyard 5.3 with a cam n'springs and a T78. Gonna through a 75-100shot along with it through a plate and would like to see 7xxwhp+ with the huff.
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Old Sep 9, 2012 | 09:30 PM
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yup, skinnies made nearly 900whp with 80lbers
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Old Sep 10, 2012 | 05:44 AM
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On e85? What psi and turbo? 900whp seems a lot for just two 255s and 80s
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Old Sep 10, 2012 | 06:23 AM
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Was he using meth along with the 80s?
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Old Sep 10, 2012 | 06:39 AM
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Originally Posted by Camaro9969
On e85? What psi and turbo? 900whp seems a lot for just two 255s and 80s
I never said 2 255s. I said he had 80lbers.

Do a search.
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Old Sep 10, 2012 | 08:09 AM
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I am hoping for 600 with 2 255's, 80lb injectors, and stock lines with E85.
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Old Sep 10, 2012 | 08:20 AM
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I got 72# injectors and my car was tuned on 40psi base pressure.....thought they would up it but guess not lol....and I'm making 600whp on e85 so 80# on 60psi base I would think would take you to 700whp..
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Old Sep 10, 2012 | 08:49 AM
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Twin 255s....stock lines...e85...600rwhp on 12 degrees
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Old Sep 10, 2012 | 09:17 AM
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Originally Posted by a4ls2goat
I never said 2 255s. I said he had 80lbers.

Do a search.
That seems like a ton of HP 900 to the wheels with 85 I'm surprised the injectors can handle that......
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Old Sep 10, 2012 | 09:45 AM
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I saw Skinnies car last weekend it is no joke
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Old Sep 10, 2012 | 10:07 AM
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yep, 80's are doing 767whp on mine with a magnafuel pump
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Old Sep 10, 2012 | 10:20 AM
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It's all about your fuel pressure.
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Old Sep 10, 2012 | 10:26 AM
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I made 640hp with 80# injectors and stock feed line. I'm sure it's capable of supporting more!
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Old Sep 10, 2012 | 11:48 PM
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Originally Posted by a4ls2goat
It's all about your fuel pressure.
Bingo! I've got 3 walbros and 80lb injectors, running just shy of 95lbs pressure with boost at wot.
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Old Sep 11, 2012 | 08:46 AM
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i made 630 with 80lb'rs on E85. dual pumps,-8an feed, fast fuel rails, boost referenced regulator.
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Old Sep 11, 2012 | 09:39 AM
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depending on how rich you run the car, the 80's will get you just at or under 800 rwhp on e85
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Old Sep 16, 2012 | 08:29 AM
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I trapped 142 last night on e85 with a 2900# car. This was with a 485 Walbro pump -10 feed and 80# injectors. Base pressure was at 55psi. We were getting close to maxing them at that pressure so we will be upping that this week.
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Old Jan 12, 2013 | 12:44 AM
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Bumping and old thread

I dynoed today tuner said I was out of Injector on e85

Fox body
4.8
Th400
Tu1 cam
Dual external walbros
-8 fuel line
Aeromotove afpr
46 psi base FP
TC78 on 15lbs


Tires were spinning on the dyno even with people on the trunk


Made 567/489


Not sure how much a TH400 robs over a manual tranny but I was hoping to hit 650 on the 80's



Only running a 2bar map so that's why we stopped at 15lbs and he mentioned the DC was creeping up there.


Comments ? I know xyz person on here has made more than I did but at what base fuel pressure ?

I'd like to make 650 with a 3 bar map around 20psi without having to buy more fuel pump and Injector.
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Old Jan 12, 2013 | 12:50 AM
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i made 697rwhp on two bad cyls with e85 on 80lb injectors and had more to spare.
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Old Jan 12, 2013 | 03:04 AM
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Originally Posted by boss79z
Twin 255s....stock lines...e85...600rwhp on 12 degrees
12 degrees seems kinda low?
Im making 543 565 on pump gas with 14 degrees.
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