badass68

I made 640whp on 93 tune at 6psi. Installing flex fuel setup right now. Thinking about changing pulley from 3.8 to 3.6 also.

schpenxel

There's always some risk doubling the original HP... but many LS3's on E85 have handled that much power for a long time. I'm sure some have gone boom as well.

Tune will be key.

Detoxx03

With proper fuel and tuning yeah. I'm still on stock bottom end after modding this car over 4 years ago. I don't baby it either. Before I went to e85 and my most recent numbers I ran it at 630,676,702,741,780, and the present.

lt1z

Some have lasted and others have gone. A lot will depend on the tune and fuel system.

badass68

Wow! That's awesome. Have you popped any head gaskets?

Detoxx03

Nope nothing.

schpenxel

Nice

7SECONDS

I have been running my LS3 for over a year now at 750 RWHP and it is still running strong. Alot of it is because of the FSP tune and lots of available fuel. I run it on 93 Octane and Meth Injection. Also running a Fore Innovations Triple fuel system.

ProEFI

easy to breath her up ;D

Dude_man

Ive ran as much as 18.6psi through a stock ls3 with a billet s480 which should be close to 1000whp with no issues.

schpenxel

Then there's that guy who can't get his to blow up

E85 FTW when it comes to making stock engines survive stupid HP

Dude_man

mourat

730 RWHP and going strong!

JAvery20

Seems like even 800rwhp has a good track record, at least from the research I have found lately.

Edmlaser

740rwhp. On E85 and 9.8psi of boost.
My fuel pump is also stock with a boost a pump and bigger injectors.
The tuner told me that until I upgrade my fuel system I have to run an E85 and 91 mix.
He told me not to let my alcohol content exceed 60%. That is the point to where the stock fuel pump is giving up.

Dude_man

I hate the idea of mixing fuels, buy a Bosch 044 intank or add a secondary pump and do it right.

Edmlaser

Yeah.. I know, I don't like it either.
I definitely plan on doing something. We have been discussing the secondary pump idea because he was explaining to me that the intank idea will eat me up in labor cost...LoL
He knows how tapped out my money is right now..LoL

It will be so much better when I can just fill up the tank with E85 and forget it!!

Dude_man

Look at my last build thread, I build an inexpensive reliable secondary system that didn't require the dropping of the tank (which is actually not bad if you have jack stands that can go up high enough)

UmX

I have a ls2 Id1000's, holly rails and a z06 pump and a boost a pump..

What is needed to run e85..



I was dyned out at 636@11psi 93 and meth.. But id rather run e85 then use meth.

Dude_man

You need more pump