2014 Silverado & E85 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Chevrolet When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 08-26-2013, 04:42 PM   #1
Junior Member
Thread Starter
 
Join Date: Aug 2013
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
14silver is on a distinguished road
Default 2014 Silverado & E85

Some initial results using E85 in the 2014 Silverado 5.3L.

Note that the truck is brand new and only has 1000 miles on it. So far with gasoline I drove the same 124 mostly highway route back and forth 6 times. 5 using gasoline and 1 using E85.

On gasoline I averaged 19.2 MPG
On E85 I averaged 17.9 MPG

Gasoline contains 114,100 BTU'* per gallon while E85 only contains 76,100 BTU'* or approx. 33% less energy. However, the cost of E85 in Michigan is $2.89 vs. $3.61 for gasoline or approx. 25% less. Additionally, the EcoTec3 motor in the Silverado has 355 HP on gas but 380 on E85 and 383 torque with gas but 416 torque on E85. So 25 more HP and 33 more torque.

Also, the EcoTec3 motor features cylinder deactivation which allows it to run on 4 cylinders instead of 8 when under low load.

So if the gas MPG is 19.2, E85 will need to get only 14.8 mpg for the same cost per mile (18.8 cents per mile). With the E85 MPG of 17.9 it is costs 16.1 cents per mile or approx. or 14% less than running on gasoline.

I suspect the added HP & Torque due to the higher compression ratio allows the truck to run in V4 mode a little more making up for the lower energy in E85.

Stay tuned for more results in the future including tests when towing!
14silver is offline   Reply With Quote
Old 08-27-2013, 08:20 AM   #2
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

thats the first time i heard anyone say that. my 07 3500 monte went down 30% with e85. and e85 here was 3.10-3.20 and gas was around 3.80
jwfirebird is offline   Reply With Quote
Old 08-27-2013, 10:17 AM   #3
Junior Member
Thread Starter
 
Join Date: Aug 2013
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
14silver is on a distinguished road
Default

Quote:
Originally Posted by jwfirebird View Post
thats the first time i heard anyone say that. my 07 3500 monte went down 30% with e85. and e85 here was 3.10-3.20 and gas was around 3.80
Without cylinder deactivation, CVVT, and direct injection E85 is a waste of money.
14silver is offline   Reply With Quote
Old 08-27-2013, 05:20 PM   #4
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

your engine has the same efficiency on gas or e85, but the e85 has 30% less energy. so you use 30% more fuel to produce the same amount of power it takes to push the same vehicle through the air. you are not using 350hp at cruise on the hwy, probably more like 40-50.
jwfirebird is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
E85 Danthurs Performance, Brainstorming & Tuning 20 01-20-2010 09:20 AM
e85 xtremerevolution General GM Chat 14 10-30-2007 08:43 PM
$&)$&*)#&+()#%& )#@(%&#)%*(&+_ Maymybonnieliveforevr Lounge 6 05-02-2007 07:07 PM
Flextune E85 kits and others i fond robert76 Performance, Brainstorming & Tuning 16 07-21-2006 07:59 PM


Tags
e85, ecotec, ecotec3, mpg, silverado1500

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:26 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.