Notices
8-Lug Truck Performance Duramax, 8.1L, and HD tech | Intakes | Exhaust | Tuning | Suspension | Drivetrain

Best mileage 8.1

Thread Tools
 
Search this Thread
 
Old 06-12-2012, 04:41 PM
  #11  
Registered User
iTrader: (1)
 
Team Paulie's Avatar
 
Join Date: Sep 2009
Location: Montana
Posts: 631
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by nonnieselman
with a 8.1?
From fill up to fill up,Toledo to Cleveland and back again,night driving and not a lot of traffic,cruise set at 65-70 the whole time.
Old 06-12-2012, 08:01 PM
  #12  
TECH Apprentice
 
whippled 8.1l build's Avatar
 
Join Date: Apr 2012
Location: thurmont, maryland
Posts: 340
Likes: 0
Received 0 Likes on 0 Posts
Default

i do have a merc cam if your looking for a little more power.. got it with a bunch of other parts i ordered. 100.00$
Old 06-12-2012, 08:02 PM
  #13  
TECH Apprentice
 
whippled 8.1l build's Avatar
 
Join Date: Apr 2012
Location: thurmont, maryland
Posts: 340
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Team Paulie
From fill up to fill up,Toledo to Cleveland and back again,night driving and not a lot of traffic,cruise set at 65-70 the whole time.
13 mpg in a 8.1l isnt unheard of. i was getting 13 on a regular on the highway. with 4.56 rears i got 12 on the highway and better towing mpg
Old 06-13-2012, 10:37 AM
  #14  
Registered User
iTrader: (1)
 
Team Paulie's Avatar
 
Join Date: Sep 2009
Location: Montana
Posts: 631
Likes: 0
Received 0 Likes on 0 Posts
Default

I dont remember what gears I had,4.10's I think.
Old 06-13-2012, 12:02 PM
  #15  
Registered User
Thread Starter
 
Txsasquatch's Avatar
 
Join Date: Jun 2012
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by whippled 8.1l build
i do have a merc cam if your looking for a little more power.. got it with a bunch of other parts i ordered. 100.00$
Do you know the specs?
Old 06-14-2012, 08:39 AM
  #16  
TECH Apprentice
 
whippled 8.1l build's Avatar
 
Join Date: Apr 2012
Location: thurmont, maryland
Posts: 340
Likes: 0
Received 0 Likes on 0 Posts
Default

im trying to find the specs on it but im having a hard time.. i know the differances in the marine vs truck 8.1l's is the cam and injectors(42lb) for sure but ill do what i can to try and find the specs for it for ya
Old 06-23-2012, 06:06 PM
  #17  
TECH Addict
iTrader: (17)
 
xx_ED_xx's Avatar
 
Join Date: Jun 2007
Posts: 2,229
Likes: 0
Received 1 Like on 1 Post
Default

i got 17 hi way with a stock motor and a tune manual trans and 3.42 gears, but this was in a lowered 1500 as well and was running a/c
Old 06-24-2012, 09:02 AM
  #18  
TECH Apprentice
 
whippled 8.1l build's Avatar
 
Join Date: Apr 2012
Location: thurmont, maryland
Posts: 340
Likes: 0
Received 0 Likes on 0 Posts
Default

its gonna be fun when i get the funds up to build a 1500 8.1l i cant wait its gonna be funny as hell.. guese ill halfto bring it to texas
Old 06-24-2012, 07:13 PM
  #19  
TECH Addict
iTrader: (17)
 
xx_ED_xx's Avatar
 
Join Date: Jun 2007
Posts: 2,229
Likes: 0
Received 1 Like on 1 Post
Default

I'll be in bowling green, ky when i get back from deployment
Old 06-25-2012, 07:26 AM
  #20  
FormerVendor
 
Stainless Works's Avatar
 
Join Date: Oct 2009
Location: Chagrin Falls, Ohio
Posts: 230
Likes: 0
Received 0 Likes on 0 Posts
Default

Add some Stainless Works Long Tube Headers, we have sold many of these with great customer feedback for improved throttle response and better gas mileage due to engine efficiency. We have various primary sizes available for a variety of customer needs. Available in 1-3/4", 1-7/8" or 2". Our 2" is popular for extended High RPM use and/or supercharger applications. Most of our customers choose 1-3/4" or 1-7/8" for towing use.

Check out 8.1 Headers HERE



Quick Reply: Best mileage 8.1



All times are GMT -5. The time now is 08:25 AM.