..............i get around 14-15mpg with 4.10 gears...........this is definatly the way to go, i couldnt imagine having 3.73's
4:10 vs 3:73
Thread Starter
|
New User
Joined: Apr 2006
Posts: 11
Likes: 0
Originally Posted by Beerstalker
Really depends on your driving style and conditions, as well as what kind of truck (reg cab, crew cab, long bed, short bed, 4x4 etc.).
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
If you are doing mostly city driving while towing you may even see an increase in fuel economy over the 3.73 gears.
Trending Topics
Thread Starter
|
New User
Joined: Apr 2006
Posts: 11
Likes: 0
Originally Posted by edjunior
Like 89crewcab said, if you're gonna be towing anything, 4.10's are the way to go. Little to no difference in mileage (as reported elsewhere) and better towing capability.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Fleet Mechanic
Joined: Nov 2004
Posts: 1,857
Likes: 5
From: Northern CA
Originally Posted by georgedo
I don't understand how there can be little or no differance since the engine will be always spinning higher. Do you have actual experience with the two ratio's?
A higher spinning engine, in some cases can actually be as efficient, depending on your speed & payload.
Cargo Master
Joined: Jan 2007
Posts: 2,243
Likes: 79
From: Roman Forest, TX
No actual experience (yet...my 4.30 rear end is sitting in my garage waiting for me), just what has been talked about in endless threads here. I've seen the reports of 1 - 3 mpg difference, and an actual mpg increase when towing in some cases. But most people with the 4.10's are reporting the same mpg numbers as those with a 3.73.
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
Get 4:10s or 4:30s regardless of if you tow or not. For the 5.4l and 6.8l gassers they are better than the 3:73s for overall performance. If you do 95% highway driving over 75mph than the 3:73s may be a tad better.
Around town you should see better mpg with 4:10s or 4:30s. On the highway the 3:73 will probably do a tad better (empty) mpg wise.
The 5.4l and 6.8l engines will rev and prefer a steeper gear set like the 4:10s and 4:30s. Once my truck is paid for I'm going to be swapping to 4:30s and a locker.
Around town you should see better mpg with 4:10s or 4:30s. On the highway the 3:73 will probably do a tad better (empty) mpg wise.
The 5.4l and 6.8l engines will rev and prefer a steeper gear set like the 4:10s and 4:30s. Once my truck is paid for I'm going to be swapping to 4:30s and a locker.
Last edited by dkf; Jan 10, 2008 at 10:00 AM.
Senior User
Joined: Oct 2007
Posts: 214
Likes: 0
I have an 03 with a 6" lift and 35s and make a mesley 10mpg with 4.10s with a cold air intake and a hypertech programer. In town it will make probably 6 or 7. I wont ever buy a 5.4 in a superduty again. My buddies got the same thing i do but with a 7.3 completely stock and makes 18mpg. Big difference and still has more power.
Freshman User
Joined: Mar 2007
Posts: 32
Likes: 0
I dont know why anyone hasent brought up the fact that tire size is the cheapest easiest way to change gear ratio.
I have a '75 250 HiBoy w/4:56's. When 36" tires r on she'll roll bout 65mph easy. But with 33"ers youd blow it up if you tried,but with shorter tires will never run out of snort. Point being, for the cost of gear swap, you could have 2 or 3 sets of rims and tires.
I have a '75 250 HiBoy w/4:56's. When 36" tires r on she'll roll bout 65mph easy. But with 33"ers youd blow it up if you tried,but with shorter tires will never run out of snort. Point being, for the cost of gear swap, you could have 2 or 3 sets of rims and tires.