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e85 questions before i pull the trigger



Im on a 3.2 and 42s. Works fine.

Never had a wideband on my dd car. Its 100% not needed on e85. Tuning cold start is not a real thing unless you have some mechanical issues. Mine has started fine and its so haggard and broken im surprised it runs at all.
 
Cold start is a tuning issue with e85. Not only is the stoich diffrent but the evaporation factor of of ethanol is diffremt than gas, thus requiring tuning for colder weather areas.

Ive never been a fan of this plug and play e85 without tuning becaise theres more to be had out of your money with e85. Timing changes being the most important.
 
I plan to tune, Definitely, i only plan to run like this for a month or 2, (tax return time at most) then add rockers Plog and tune it!
 
Well if it works then you dont need to tune it. You wont find many gains doing timing changes and you wojt find any gains doing fuel changes unless you are fixing a mechanical issue.
 


I emailed ZZP to see there recommendation before i started this and i just got a repsonse that "those injectors definitely wouldnt be big enough on e85" for the build i want (rockers Plog Downpipe, 3.2)
said a stock pulley is all i could run on the 42.5s?

This doesnt seem right... I have been told by zzp a few months ago that 42s on e85 support 280whp which is almost a 100 whp increase
 
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04lss said:
I emailed ZZP to see there recommendation before i started this and i just got a repsonse that "those injectors definitely wouldnt be big enough on e85" for the build i want (rockers Plog Downpipe, 3.2)
said a stock pulley is all i could run on the 42.5s?

This doesnt seem right... I have been told by zzp a few months ago that 42s on e85 support 280whp which is almost a 100 whp increase
Click to expand...

I'll bet ZZP's answers change as their part stock changes. I don't think I've been in the GP community long enough to have seen a reputable ZZP.
 
They should support at least 250whp on e85 according to a quick calculation. That is pretty conservative though. More than that shouldn't be a problem.
 
Unless this is going on a return less fuel system. Then yeah, they will he very close to maxed on a stock pulley.
 


42s should support e85 to right around 3.2-3.3. they were fine at 3.4 on a GT block but getting close to the limit. For me anyways
 
This is my experience, (on 60# injectors)
Ran great down to a 3.2, anything smaller than that and you'll need to upgrade the fuel system.

OH.....and you can run 42's on E85 with no problems. :)
 
its the stock 97 GTP fuel system, from what i understand the stock systems on the early GTPs where return systems, but im not sure


GTPpower said:
Unless this is going on a return less fuel system. Then yeah, they will he very close to maxed on a stock pulley.
Click to expand...
 
Yeah you have a return system. Get a Casper's or racetronix rewire on there, and you'll support a lot of power.
 
GTPpower said:
Yeah you have a return system. Get a Casper's or racetronix rewire on there, and you'll support a lot of power.
Click to expand...

im ready to buy the injectors ... today. the 42#s will support a decent increase? ill go 3.4 from stock, if itll support that along with a plog downpipe, and rockers then ill go for it.
 


42s should do 300whp in their sleep.

You can run alot leaner than gas and we made well over 400 on 42 back in the day. 60s were good for 620whp.
 
just finished tonight having my l67 running v8supercar spec 107 octane e85,my mods are 12psi pulley,60lb injectors walbro 450lph pump with yt 1.9 rockers
dwp114.jpg
 
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