Good info for sure! Im going to run twin walbro 255's through the stock lines with a 1/1 regulator returning through the evap line 80# deka injectors on e85. Bought a Huron speed kit with magnum 80mm turbo From slowlsx on here just waiting for it to arrive. Should be plenty for a stock ls1

 

So Ive been talking with my tuner and He seems to think I will run out of fuel "e85" before 600rwhp on their dynamics dyno. What do you guys think? Again Fuel system is stock rails, lines, 1/1 malory fpr, 80lb deka injectors. Dual Walbro 255's hot wired. And I'm @ 6000 ft elevation.

 

I made 690 2 255s 80 lb injectors 95% duty cycle at elevation 5600+ feet corrected rwhp through t56.
Stock lines stock fuel pressure regulator

 

The fuel lines will support 900+
Injectors will support 900+
Stock rails will support 900+
Fuel pumps will support right at 800rwhp when they run out, I never recommend more than 750rwhp with 2 walbros. You can add a boost a pump and support 850+ rwhp

Run 65 base fuel pressure

This is all off proven real world situations I have done on several cars.

I've never actually measured exactly, but I believe they are 3/8.

 

Sounds like you need to find another "tuner" to me...

 

i think we covered this already and i might have replied already but i did 690-711rwhp on 80s and e85, 50psi base pressure

 

Thanks for the info guys I'll try this fuel system out and see where it gets me. Seems like a great reliable street budget fuel system

 

 

I use E85. On my C6 I'm using a stock LS3 in tank pump, a Bosch 044 external running off my drivers side tank, and a return going back to the drivers side tank. Stock LS3 fuel rails. Pressure set at 58psi and it's not boost referenced. 673rwhp and my FIC 103#(at 58psi) injectors are at 91% duty cycle. Dyno was done in 116F Phoenix heat and correction factor was 1.07. If I was boost referenced I would gain a little headroom, but not too much as I'm only at 12psi. I'm going to add meth to know down my IAT's and that will take a little load off the injectors. Currently I'm at 11.2:1 AFR on the gas scale.

 

Skinnies- I'll be running 95% street. Are the cars your talking about full time race? Street? I was wondering if you have any problems, running high pressure on the street, as far as heating the fuel?

 

All are street cars and no issue.

 

im piecing together a e85 setup myself right now.

what regulator are you guys using?

 

In case anyone wanted to know what 80's will do on a 3 bar base fuel pressure -- I switched to E85 a few days ago and am running at 43.5 base psi. It's a boost referenced regulator, and at 12psi I was at 98 IDC. I'm also spraying pure meth through dual 10 nozzles. I would guess I'm in the 650rwhp range through a 4l80e.