3.55 vs. 3.73
Post Fiend
Joined: Mar 2005
Posts: 8,542
Likes: 5
From: Louisiana
Welcome to the site!
Good to hear you changed to a better gear(but if it were me, I would of went to 4.10s).
IF you don't mind me asking, how much they charge you?
Are you sure it consistanly improved 3.5 mpgs.....sounds highly unlikely for such a small change.
Good to hear you changed to a better gear(but if it were me, I would of went to 4.10s).
IF you don't mind me asking, how much they charge you?
Are you sure it consistanly improved 3.5 mpgs.....sounds highly unlikely for such a small change.
Post Fiend
Joined: Mar 2005
Posts: 8,542
Likes: 5
From: Louisiana
Like 05Edge said, your speedo will be off, and thinking about if for a couple seconds, when the speedo says your doing 65, your really doing 60, so it shows your going several miles more than you actually are so your MPG will go up on that alone.
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New User
Joined: Jan 2008
Posts: 5
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Yes, it was done by a dealer the speedo was recalibrated and I double checked it with a gps it is correct. The main reason I did thou was for a little better performance, with the 22" wheels the truck was a dog and wouldn't get out of its own way. it cost me about $900.00 for parts and labor.
Last edited by MARC A; Jan 30, 2008 at 03:25 PM.
Sick 'n Tired
Joined: May 2006
Posts: 2,969
Likes: 47
From: League City, TX
Originally Posted by MARC A
it cost me about $900.00 for parts and labor.
edit: nevermind, reread the first post. $900 for one axle...ouch.
Last edited by bridge; Jan 30, 2008 at 04:20 PM.
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Tuned
Joined: Jul 2007
Posts: 375
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From: Columbia, MO
Originally Posted by MARC A
I just had my dealer replace my rear gears with 3.73 and it improved my gas mileage 3.5 mpg. I have and 06 2wd with the 5.4[U][I] and 22" wheels just though I would pass this info on
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Post Fiend
Joined: Mar 2005
Posts: 8,542
Likes: 5
From: Louisiana
Originally Posted by bridge
Is your truck 4x2 or 4x4?
edit: nevermind, reread the first post. $900 for one axle...ouch.
edit: nevermind, reread the first post. $900 for one axle...ouch.
Out of curiousity, do you know how much parts were?
Or just labor?
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New User
Joined: Jan 2008
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i want to say they were around 350-375 for parts I would have to look at the invoice tonight. It was a little high but it actually runs like I feel it should. I am not out to win a race with it I just want the performance I lost by putting the 22's on it My wifes new Avalanch would leave it sitting and we just can't have that.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,606
Likes: 149
From: SE Georgia
Originally Posted by mbogosia
I'm going in for a 3.55 to 4.10 gear swap in the morning. I just got my edge tonight so I can't wait to get the gears! I am getting the job done for $450 which includes Ford Racing Gears.
Elder User
Joined: Aug 2004
Posts: 585
Likes: 2
From: Willis, Texas
Originally Posted by mbogosia
I'm going in for a 3.55 to 4.10 gear swap in the morning. I just got my edge tonight so I can't wait to get the gears! I am getting the job done for $450 which includes Ford Racing Gears.
Heh...mbogosia, it would almost be worth it for me to drive to Tenn to have this done by this place.
Just out of curiousity, are you going to keep the diff cover or get an aluminum aftermarket with a larger sump?
D