Jump to content

Want to go E85 on my 16 Sierra CC 4x4 6.2L

TJay74

By TJay74
in Engines & Drivetrain

 Share

Recommended Posts

TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted
These trucks have the capacity to adjust to the fuel being used. I used E-85 locally and mid grade on trips.


Sent from my iPhone using Tapatalk


I called a Valero in Conroe, asked what the octane was on the E85, lady said 85. Is that true?


Sent from my iPhone using Tapatalk
  • Replies 61
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

ozws6
ozws6

I used the stock flex fuel sensor and fuel lines.  Parts are about $150 and took a couple hrs to install.  The install requires replacing the fuel line basically from the tank to the rail.  You will a

TJay74
TJay74

Thanks peeps, got ahold of Carl and ordered his kit and he is going to adjust my tune for the E85 since I have HP Tuners already for my truck. The E85 along with the new Katech ported throttle body I

SkiDooNick700
SkiDooNick700

lol pretty sure that is false, E85 is over 100 octane I believe.   One of the issues you gotta watch out for (if you are looking to get the most ethanol %) is the actual ethanol content - it

KARNUT Senior Enthusiast

KARNUT

Posted
Posted


I called a Valero in Conroe, asked what the octane was on the E85, lady said 85. Is that true?


Sent from my iPhone using Tapatalk

105, it can very a bit.


Sent from my iPhone using Tapatalk
SkiDooNick700 Enthusiast

SkiDooNick700

Posted
Posted (edited)
5 minutes ago, TXGREEK said:

 


I called a Valero in Conroe, asked what the octane was on the E85, lady said 85. Is that true?


Sent from my iPhone using Tapatalk

 

lol pretty sure that is false, E85 is over 100 octane I believe.

 

One of the issues you gotta watch out for (if you are looking to get the most ethanol %) is the actual ethanol content - it varies station to station I guess.  You can buy test kits so you can see how much ethanol is actually in the E85.

Edited by SkiDooNick700
  • Like 1
TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted

105, it can very a bit.


Sent from my iPhone using Tapatalk


Yes, i did hear that it can vary ok but it only safe to use in flex fuel motors. Wish I could use it on my new 6.2 ha


Sent from my iPhone using Tapatalk
TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted

105, it can very a bit.


Sent from my iPhone using Tapatalk


Yes, i did hear that it can vary ok but it only safe to use in flex fuel motors. Wish I could use it on my new 6.2 ha


Sent from my iPhone using Tapatalk
KARNUT Senior Enthusiast

KARNUT

Posted
Posted


Yes, i did hear that it can vary ok but it only safe to use in flex fuel motors. Wish I could use it on my new 6.2 ha


Sent from my iPhone using Tapatalk

You don’t need it.


Sent from my iPhone using Tapatalk
TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted

You don’t need it.


Sent from my iPhone using Tapatalk


I know, ha


Sent from my iPhone using Tapatalk
  • Like 1
TJay74 Senior Enthusiast

TJay74

Posted
  • Author
Posted

Why does he not need it, I have a 6.2. The extra 30hp is a nice change. 

 

E85 is 105 octane, the 85 part is that it is 85% ethanol and 15% gasoline. Winter blend affects E85 as well, I have seen it go down to E60 during the winter months. The testing kits are ok, but they are not accurate at all. I get my data from the flex fuel sensor itself. We have a local gas station that carries the higher grade fuels and they make sure to carry full E85 year round at the same price the other places are charging.

TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted
Why does he not need it, I have a 6.2. The extra 30hp is a nice change. 
 
E85 is 105 octane, the 85 part is that it is 85% ethanol and 15% gasoline. Winter blend affects E85 as well, I have seen it go down to E60 during the winter months. The testing kits are ok, but they are not accurate at all. I get my data from the flex fuel sensor itself. We have a local gas station that carries the higher grade fuels and they make sure to carry full E85 year round at the same price the other places are charging.


Oh NO NO NO! 6.2’s are NOT Flex Fuel compatible


Sent from my iPhone using Tapatalk
KARNUT Senior Enthusiast

KARNUT

Posted
Posted
Why does he not need it, I have a 6.2. The extra 30hp is a nice change. 
 
E85 is 105 octane, the 85 part is that it is 85% ethanol and 15% gasoline. Winter blend affects E85 as well, I have seen it go down to E60 during the winter months. The testing kits are ok, but they are not accurate at all. I get my data from the flex fuel sensor itself. We have a local gas station that carries the higher grade fuels and they make sure to carry full E85 year round at the same price the other places are charging.

I’ve always had a tune, caned tune. The 5.3 with the yellow cap every thing to use it is already in place to take advantage of E85. I just used the tune for the transmission, top speed and cylinder deactivation. On the 6.2 you’re already running a little advanced on the timing requiring high octane fuel. Add to that E85 is not always 105 octane, so the gains of going through the effort is suspect. If I’m going to risk my warranty for power I’m going with a blower.


Sent from my iPhone using Tapatalk
Gorske Enthusiast

Gorske

Posted
Posted (edited)

Here comes that e85 debate that happens every time someone mentions running e85.... :lurk:  There are thousands of NA 6.2 Camaros, Corvettes and Trucks running e85 with shown gains. As long as you have a good e85 tune and a sensor so the pcm can adjust the fueling for the different blends you are just fine running e85 in the 4.3, 5.3, and 6.2

 

Miata 6.2 swap NA running e85 and showing dyno results when running e85.

 

Edited by Gorske
KARNUT Senior Enthusiast

KARNUT

Posted
Posted
Here comes that e85 debate that happens every time someone mentions running e85.... :lurk:  There are thousands of NA 6.2 Camaros, Corvettes and Trucks running e85 with shown gains. As long as you have a good e85 tune and a sensor so the pcm can adjust the fueling for the different blends you are just fine running e85 in the 4.3, 5.3, and 6.2
 
Miata 6.2 swap NA running e85 and showing dyno results when running e85.
 

I think you miss understood. I saw gains with my 5.3 with E85. My truck was E-85 compatible stock. The 5.3 is tuned to run on reg gas so putting E-85 allows more increase timing and a real seat of the pants feel. The 6.2 is tuned to run on premium fuel. So there wouldn’t be room in the timing tables for a real noticeable feel. E-85 is like buying a boxed of chocolates, you really don’t know what you’re going to get. You can tune the 6.2 to get gains on premium fuel too. My point was you’ll feel it more with the 5.3 starting at the reg fuel timing verses the E-85 timing. Got it?


Sent from my iPhone using Tapatalk
Gorske Enthusiast

Gorske

Posted
Posted (edited)
28 minutes ago, KARNUT said:


I think you miss understood. I saw gains with my 5.3 with E85. My truck was E-85 compatible stock. The 5.3 is tuned to run on reg gas so putting E-85 allows more increase timing and a real seat of the pants feel. The 6.2 is tuned to run on premium fuel. So there wouldn’t be room in the timing tables for a real noticeable feel. E-85 is like buying a boxed of chocolates, you really don’t know what you’re going to get. You can tune the 6.2 to get gains on premium fuel too. My point was you’ll feel it more with the 5.3 starting at the reg fuel timing verses the E-85 timing. Got it?


Sent from my iPhone using Tapatalk

Sorry was not aimed towards your post. More of a in general to past threads about e85 on NA vehicles. Also just a nice video to show what kind of gains you can see on e85 when properly tuned with a sensor. Plus I think it's a pretty sweet build :)

Edited by Gorske
  • Like 1
swathdiver Senior Enthusiast

swathdiver

Posted
Posted

During normal fueling, it can take 3 or 4 tanks of fuel to get the full alcohol content of ethanol after switching off of gasoline.  My local Sunoco is carrying an unknown brand E85 and it has an 80% alcohol content.  Last 3 tanks were 80%, first 4 varied and kept increasing until the gasoline was all gone.  

Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

Hopefully I will be able to put an E85 kit on my 2019 when I get it.  That is if it will be able to be tuned at all and GM doesn't lock the ECM down.  Then it will be a matter of time before someone cracks it.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • BIGBOYS
      Doors lock and mirrors fold in while driving

      By BIGBOYS · Posted

      I have a 2015 Silverado and sometimes I can not get in to the truck. I use the key to unlock the driver door. Something is locking the truck when I unlock it, last night I left the truck open and this morning it was locked with the mirrors folded in. This happens while driving so it is now a safety issue. I reach down for the folding button and they open, then they close again.  Any advice, thank you,   Ed
    • Paul8556
      Headlight issue...

      By Paul8556 · Posted

      Did you ever find a resolution to this? my 2019 Silverado 1500 is showing the exact same headlights issues with the exact same symptoms.  would help a ton if anyone has any advice on this or better yet a known solution..
    • RyanbabZ71
      Gas Prices

      By RyanbabZ71 · Posted

      Wawa and Meijer here have ethanol free (88 & 89) I use for my mower and lawn equipment.  Its not much more than reg.  I paid $3.29 a few weeks ago.  
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      tl; dr I've now reached the 6th floor of hell. I'm chronicling my journey for my morning readers.   Pulling the top of the intake apart was moderately easy but it involved a lot of parts, connections, and minutae. I was preparing for the new fuel lines to arrive ("nut and bolt kit" it's called). The fuel line connections are notched and held in place by the manifold and a metal plate with a T27 screw.   It's on the back of the intake, under the firewall, with little clearance, and two hard metal fuel lines in the way. I was using Franken-tools (weird combinations of 1/4 inch ratchet with/without an extension, with a bit holder for my T27) to get in there. One of my sockets and bits fell off and has yet to emerge on the floor. I lost a second setup and that's when I almost started throwing tools. But that was the point at which I had gotten traction on the Torx head, and it promptly stripped. No more traction.   I started humming "1-877-kars-4-kids" because I was about at that point. You know what? I'm $1500 into this thing and I can make it disappear just as quickly. This isn't fun anymore. I had spent a lot of time already "tidying" around the engine bay: Fixing all the "someone's been here before!" BS. The truck has been exclusively dealer- and shop- serviced and I'm reminded of why I never let other people work on my cars unless absolutely necessary.   Speaking of dealer service. This truck has a 1" stack of records going back to 1995. I put them all in an excel spreadsheet, date/mileage/description.   The CPI spider has been replaced 4 times in 85k miles. The EGR? Another 4. Multiple, multiple O2 sensors. One Cat. 4? Sets of plugs and wires, and I swear half the stack is diagnosis paperwork for "misfire, runs rough, extended crank, dies at stoplights".   GM was producing some proper crap back then. And it was still well within the era of brittle/crappy plastic. (Windows 95 was released the same month this truck was sold new, we HAD the technology!!)   There (was) a plastic shroud around the evaporator core and HVAC fan in the engine bay. I noticed a chunk of it missing so I poked at it some more and it literally shattered. Touched it some more and pieces were crumbling off. Had a good laugh. Clearly whatever plastic garbage they were using had broken down over 30 years and was literally turning to dust. That was a good half hour of using a shop vac to remove the rest of it.   Back to it.   I was going to give up for the evening but then decided I'm already level 10 pissed off at the stripped screw: G* D* it, give me my tools back -- and my JOY. We'll do this the hard way: The whole intake is coming off.   Blazer won Round II. After finally finding and accessing the 12 intake bolts and using a pry bar to unseat it from the heads, it popped loose in an explosion of gunk and grime raining down into open ports. Awesome.   6 times I reminded myself: Be careful of the temperature sender on the front of the intake.   YEAH, I forgot again and snapped it clean off in the removal. Add another $20 to the ever-growing list of new parts this thing is consuming.   The shame is, long before removing the intake, I had changed the oil in prep for Tuesday's momentous fuel line replacement that was going to be the magic fix and I'd have a running Blazer to tool around in this next weekend. The intake removal, including raining gunk, also gushed dirty coolant all over the valley. Of course it did. Welp, there goes another $35.   I now need an intake gasket set, bolt set, coolant temp sensor, another 5 quarts of oil, some RTV. Don't worry, I've already got 3 new jugs of Dexcool and a thermostat waiting. I'll fill it with clean water first to get it running, dump it, and then add the Dex later on in case... well, let's not go there. I'm only tearing this down once, next time the truck is going on Marketplace for FREE.   Oh, and I'm going to need vacuum hose for all the stupid connections placed at the rear of the engine which have since disintegrated. Come on, GM....tell me you don't do that anymore?   Oh, and the ears on the distributor where the cap screws down are both cracked. I mean, why not put a new distributor in it too. You get a distributor, YOU get a distributor, Everyone gets a new distributor!   This truck isn't out of the woods yet...I'm already questioning how much more time I'm willing to sink in.
    • William Aldrich
      Bent valve in 2025 GMC Canyon Denali - Requires engine swap at 14K miles

      By William Aldrich · Posted

      NewDude, thank you for the suggestions!    I did follow up and the dealer indicates he has an open CX case and is working with DPAC (Dealer Parts Assistance Center).   Per the dealer, GM has had a quality spill and is not providing an update for when a replacement engine will be available.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...