12oh

I have a bolt on/cam zo6 here in Vegas. My gripes are that the car stinks(cam/no cats)and with vararam+100 deg+ traffic+a/c the car runs hotter than I like. I hear e85 will help this. I know that it's about $1 cheaper a gallon(all we have is crap 91) but I here your mpg drops about 25% which I'm at 13 city now. Is their any performance gain with only 11.1 compression? Car makes 530rwhp and thinking on doing ported fast, ported stock tb and e85 conversion.
Should I just stick with 91?

Slwsvt

By all means. That is 110 octane gas. You can tune in the timing to take advantage of the killer gas.

novaz06

Definitely not a good idea unless you are raising the CR. E85 only has 2/3 the energy/gallon as gasoline - with the stock CR your economy will likely go to about 8-10 and you will lose power.

Just put the cats back on, run some coolant additive like water wetter, and/or get a bigger radiator like dewitts or lg.

ole

I going with QM550 [Street Bully] cam . Cut the heads to 13 to 1 & E 85 & Headers

0Mike Yeager@Eastcoast Performance

Hi, yes it is worth it...E85 with run much cooler...but you will need larger injectors and maybe a racetronics fuel upgrade harness...Remember an E85 tune will need at least 30% more fueling...

0Myhardtop

What?????

0Myhardtop

Sound like that **** needs more tuning

E85 is great specially in the right combination

Thanks,
Carlos

walhan_qtr

i would listen to this guy ^^^^

maybe not a lot of gains, but its will def be better than 91oct. but if it was me, I wont do it unless you run higher compression.

ramairws6

Hahahahahaha...........

lane_change

I run E85 with the stock heads and compression...not sure if it offers any gains or losses in power since it went on with other mods at the same time. What I do know is that my car runs cooler than before, but my mpg definitely took a turn for the worst....Carlos thinks we can tune some better mpg into her, so we'll see. I will have her back up in Dallas in May to get the heads re-worked and get her re-tuned.

12oh

Thanks guys for the responses. I guess I will have to think about head work to up the compression. How much hp/tq gain going to 11:1 to 13:1 on e85?

ole

www.vette-air.com Have done a lot of work with E 85