69-chvl

iTrader: (11)

Hey guys, going to try and run this 5.3/s475 on e85 as there is a station up the street (just one station here and nobody else even close by!) so I'd like to try it based on all the positives I hear. I'm shooting for ~600 rwhp for now, and probably alot more in the future. I currently have a Holley Dom twin pump, going to order -10 and -6 lines, use a Holley Dom FRP, and a set of fuel rails.

Should I bother doing this as there's only one e85 station, or full steam ahead on the e85 idea? If I stick with 93, I can go with smaller lines and injectors. I will use a meth sys either way I think.

Seems like a need a completely different (larger) system for e85. I'd like to find something in the middle if possible that will work all around, cost effectively of course. Thanks!

CameronVic

iTrader: (5)

If you already have -10 (feed) and -6 (return), rails, and a pump, might as well go E85. Is it a DD? I like E85 because it smells nice and it's easier to tune for a beginning tuner like myself.

badhombre

iTrader: (4)

It all will come down to how much you drive it. Bear in mind e85 has a much higher fuel consumption rate. I will not lend my opinions on it since the e85 lynch mob will come after me again. But I am in basically the same situation as you, and I chose to stick with pump/meth. I hope you find the solution that best suit your application

stevieturbo

For such a low power goal, E85 would seem pointless.

And if using E85, there is no real need for meth.

69-chvl

iTrader: (11)

The car is just a toy really, not DD at all. But I'd like to turn the wick up at some point.

Is there a point in terms of HP were e85 becomes more appropriate??

stevieturbo

Such a grey area really, as it depends on the build, cam, compression, boost, intercooling etc.

In very general terms

Up to 600, pointless.
600 - 800 worth it if readily available and you can afford it, but not needed ( meth recommended )
800 - 1000, E85 recommended, not essential ( but needing meth )
1000+ if E85 is available, you'd be a fool not to use it.

Alex in Houston

"If" You're using one of the newer PCMs E40/E38/E67) you could take advantage of the GM Flex Fuel Sensor tuning.
All the info is HERE
I'm reading up on it for future reference. My car has just came off jack stand status about a week ago. So it's still a good way off for me to actually have a need to delve into it much further than "knowing its an option."

69-chvl

iTrader: (11)

Stevie,

When you say "afford it", are you referring to the fact that more has to be used than gasoline??? If your #'s are RWHP, my goals are in 600-800 range, which is in the "worth it" segment.

Also be running the Holley HP, so no flex fuel sensor as far as I know. A/A I/c, meth if needed, stock 5.3 LM7, and I'm guessing in 14-18 psi range.

stevieturbo

I'm referring to the fact the fuel system in every respect will need upgraded, plus the extra cost of the fuel. ( again this will depend on actual price in your area and how much you will use, so again is entirely up to the individual )

Can 800 be made on pump+meth ? Of course it can.

Will it be easier and safer on E85 ? Of course it will.

As I said, the above was a very very general guide and only my own opinion.

I would love to even have the option of E85...but it simply isnt available here.