Ford F150 Forum - Community of Ford Truck Fans

Topic Sponsor
Off-Road Section All discussion and questions about off-road in this Section
Sponsored by:
Sponsored by: Halo Lifts

Ecoboost 3:55 gears 37" tire

Thread Tools
 
Search this Thread
 
Old 02-05-2017, 09:48 PM
  #1  
Junior Member
Thread Starter
 
sw4bama's Avatar
 
Join Date: Jan 2017
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts

Default Ecoboost 3:55 gears 37" tire
Has here been anyone try to run 37" tires with a 6" lift on a '15 Ecoboost?
sw4bama is offline  
Reply Like
Old 02-05-2017, 11:18 PM
  #2  
Senior Member
 
marshallr's Avatar
 
Join Date: Apr 2016
Location: Georgia
Posts: 3,221
Likes: 0
Received 1,284 Likes on 902 Posts
Default
You'd end up effectively changing the gear ratio from 3.55:1 to about 3:1. I wouldn't do it.
marshallr is offline  
Reply Like
Old 02-06-2017, 07:43 AM
  #3  
Senior Member
 
WarSurfer's Avatar
 
Join Date: May 2010
Location: DC
Posts: 16,109
Received 500 Likes on 383 Posts

Default
Just spend the coin on gears. It's worth every penny.
WarSurfer is offline  
Reply Like
Old 02-06-2017, 10:56 AM
  #4  
Junior Member
 
Cain67C10's Avatar
 
Join Date: Feb 2017
Posts: 18
Likes: 0
Received 2 Likes on 2 Posts
Default
You would definitely want a tune at least. I'd say get gears and with 37s. These trucks look sweet with a 6" lift and 37s!
Cain67C10 is offline  
Reply Like
Old 02-06-2017, 07:19 PM
  #5  
Junior Member
Thread Starter
 
sw4bama's Avatar
 
Join Date: Jan 2017
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts

Default
I've already got the tune with my 35's I'm just afraid my mileage will drop significantly with the added mass of the 37's...really hope to find someone that has the 37's on a Ecoboost so I could get first hand info.
sw4bama is offline  
Reply Like
Old 02-09-2017, 07:32 PM
  #6  
Member
 
bbs25's Avatar
 
Join Date: Feb 2014
Location: Florida
Posts: 91
Received 6 Likes on 6 Posts
Default
Originally Posted by sw4bama
I've already got the tune with my 35's I'm just afraid my mileage will drop significantly with the added mass of the 37's...really hope to find someone that has the 37's on a Ecoboost so I could get first hand info.
I might be the right one to answer this. But I have 2014 5.0 with 37" I have 4.56 gear and love it
bbs25 is offline  
Reply Like
Old 02-12-2017, 11:10 AM
  #7  
JJM
Senior Member
 
JJM's Avatar
 
Join Date: Feb 2015
Location: Rio Grande Valley, TX
Posts: 1,057
Received 180 Likes on 136 Posts

Default
Originally Posted by sw4bama
I've already got the tune with my 35's I'm just afraid my mileage will drop significantly with the added mass of the 37's...really hope to find someone that has the 37's on a Ecoboost so I could get first hand info.
What's your mileage now? I'm running 35s on 3.55 too and am considering a gear swap.
JJM is offline  
Reply Like

Trending Topics

Old 02-12-2017, 01:30 PM
  #8  
Junior Member
Thread Starter
 
sw4bama's Avatar
 
Join Date: Jan 2017
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts

Default
I'm running 17-18 right now with mine tunes.
sw4bama is offline  
Reply Like
Old 02-12-2017, 01:32 PM
  #9  
JJM
Senior Member
 
JJM's Avatar
 
Join Date: Feb 2015
Location: Rio Grande Valley, TX
Posts: 1,057
Received 180 Likes on 136 Posts

Default
Originally Posted by sw4bama
I'm running 17-18 right now with mine tunes.
Damn. I think mines defective haha I get 10 city and maybe 13.5 running 65 (local limit) on the highway. Tuned. I DO have a 4" lift also though.
JJM is offline  
Reply Like
Old 02-12-2017, 01:36 PM
  #10  
Junior Member
Thread Starter
 
sw4bama's Avatar
 
Join Date: Jan 2017
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts

Default
I was getting 14 before I tuned but of course in only leveled...I'm still toying with the idea of 6" and 37's though
sw4bama is offline  
Reply Like



Advanced Search

All times are GMT -4. The time now is 10:17 AM.