To go E85 or not

[builttodrive]

I'm really liking the E85 since I made the switch this year. I have a lot of e85 in my area and like 20 stations in town that have it but I have found you have to map out stations if you are on a road trip. That and the fuel economy is about half from my 91 but so is the price! The lesser fuel range makes filling up come a lot more often but all in all I really like the benefits and safety factor. I also have a 91 pump tune that I could use in case of emergency and for storage during the winter months. A fuel pump tune to drain the tank and switch fuels is nice to have as well!

 

[Shadow Grey 03]

I'm really liking the E85 since I made the switch this year. I have a lot of e85 in my area and like 20 stations in town that have it but I have found you have to map out stations if you are on a road trip. That and the fuel economy is about half from my 91 but so is the price! The lesser fuel range makes filling up come a lot more often but all in all I really like the benefits and safety factor. I also have a 91 pump tune that I could use in case of emergency and for storage during the winter months. A fuel pump tune to drain the tank and switch fuels is nice to have as well!

That's the best way to do it. You use roughly 30% more fuel when running e-85. Well worth it to me.

 

[d1sc46]

Need opinions, will have car swapped to e85 in a few weeks and deciding on a new cat back. I like the 3 inch Bassani for looks and figured bigger equals more hp when having it tuned. Thanks

 

[Bdubbs]

Need opinions, will have car swapped to e85 in a few weeks and deciding on a new cat back. I like the 3 inch Bassani for looks and figured bigger equals more hp when having it tuned. Thanks

Your not going to benefit a whole lot putting on a 3" catback exhaust. My initial tune after adding LT headers was minimal, but the sound is badass. Put some money towards cooling mods if you haven't already.

 

[d1sc46]

Already have LFP heat exchanger. Curious, yet not sure I want to know lol. What's a safe range of rwhp with E85 on stock block? I know it depends on tune and I have heard/seen different numbers. Thanks

 

[Bdubbs]

What about a 170 Tstat and head cooling mod? A different heat exchanger hasn't really proven to keep iat temps down in my experience. As far as hp, that's a tricky one to answer, but yes it's all in the tune.

 

[R.D.P.]

Already have LFP heat exchanger. Curious, yet not sure I want to know lol. What's a safe range of rwhp with E85 on stock block? I know it depends on tune and I have heard/seen different numbers. Thanks

Depends on boost level. For me, my car will never see over 22lbs on the stock long block. If I do that 22lbs with a 2.9 and e85 someday, that will be good for 700whp+. I'm going to up the boost on my car 2lbs next year to about 19lbs max, plus e85 and will be hoping for 650whp, an increat of 64whp, which I think should be doable.

 

[d1sc46]

I do have head cooling mod just totally forgot lol. Will look into 170 Thermostat. As of rwhp I have seen posted 720+ on 21-22 pds with TVS but we'll see. I'd rather not be unsafe,,, and throw any more money at my speed addiction

 

[jtkz13]

What kind of power are you making currently? I'm curious to see your results when/if you go to E85.

I've got a KB 2.8H that makes just about 600whp on 93octane/18psi and 650whp with a mix of 50/50 race & pump gas and 21psi. I think I'd like the extra power and safety of E85, but I'm having a hard time with the extra up-front cost when it runs great on pump gas right now.

if it could make 650whp+ on E85 it might be worth it.

 

[04sleeper]

2.8H @ 21 psi should make over 750 on E85.

 

[jtkz13]

It's a "non-mammoth" if that matters, but I do have LT's and 3" exhaust.

I'm assuming I'd need to redo the whole fuel system right? 60lb injectors and KB BAP right now.

 

[04sleeper]

It's a "non-mammoth" if that matters, but I do have LT's and 3" exhaust.

I'm assuming I'd need to redo the whole fuel system right? 60lb injectors and KB BAP right now.

Non-Mammoth doesn't matter. 750+ all day long on E85.

Yes, return style fuel system and minimum 80# injectors.

 

[1wheel]

I'm currently making 650+ on 2.9 on 93+meth tune , I'm wondering if the ID 850's full fore return style Gss342 will be enough .

 

[d1sc46]

Currently 650rwhp /600rwtq @19.5 pds stock lower 2.8 upper. Yes a little high for 93. Thats why I'm going E85. Doing a 4pd lower keeping 2.8 upper hoping 21pds+ and would like 700rwhp/ rwtq lol

 

[MG0h3]

I think at 19.5lbs and just going to E85 youll hit the 700rwhp.

 

[d1sc46]

Sweet. So I should be over 700 @ 21-22pds. :rockon:

 

[d1sc46]

Apologies for late post lol, Definitely need new tires next few days. After E85 conversion my dyno numbers were
719rwhp /672rwtq. Not to shabby....

 

[Shadow Grey 03]

Apologies for late post lol, Definitely need new tires next few days. After E85 conversion my dyno numbers were
719rwhp /672rwtq. Not to shabby....

So, did you do the lower pulley or just e-85 ? 70 on each is about the norm on a setup like yours

 

[d1sc46]

4pd Metco lower & whole fuel system for E85.