Rear gear recommendations
Thread Starter
|
Tuned
Joined: Sep 2003
Posts: 257
Likes: 1
From: Wildwood
Rear gear recommendations
Hi All,
I have 95 XLT SWB 4.9 m5od 2.73. I want to regear and add a posi but dont know exactly what would be a good ratio. I was thinking of 3.08 or 3.27. I dont want to go any lower because I dont tow all the time and would like to keep my mpg Close to where it is now(18-20). Any suggestions from similar setups would be great.
I have 95 XLT SWB 4.9 m5od 2.73. I want to regear and add a posi but dont know exactly what would be a good ratio. I was thinking of 3.08 or 3.27. I dont want to go any lower because I dont tow all the time and would like to keep my mpg Close to where it is now(18-20). Any suggestions from similar setups would be great.
Thread Starter
|
Tuned
Joined: Sep 2003
Posts: 257
Likes: 1
From: Wildwood
I am running the stock tires. I dont tow heavy,just an enclosed 6x10 single axle trailer once in a great while to move some household goods.
Last edited by Machman; Mar 7, 2006 at 08:58 PM. Reason: incomplete
Posting Guru
Joined: Nov 2005
Posts: 1,113
Likes: 0
From: the side of a mountain
i would go in the area 3.30 or 3.50s, you will have better off the line with 3.55s but less top end and the reverse with 3.30s, but there is very little room between both of them so it will probably be hardly noticable.
Thread Starter
|
Tuned
Joined: Sep 2003
Posts: 257
Likes: 1
From: Wildwood
When you really think about it, what good are 2.73 gears? The truck cant get out of its own way let alone tow or haul anything without frying the clutch. I dont get it. I am seriously considering 3.27 or 3.55 gears.
Last edited by Machman; Mar 11, 2006 at 05:58 PM. Reason: incomplete
Posting Guru
Joined: Nov 2005
Posts: 1,113
Likes: 0
From: the side of a mountain
you aint the 1st one to wonder that. they usedto know what they were doing, almost all 4wheel drive half tons had 3.50s the 2wds had 3:1 and the 250 high boys had 4.10's. now it just seems like they throw what ever they want in there and call it good.
Trending Topics
Thread Starter
|
Tuned
Joined: Sep 2003
Posts: 257
Likes: 1
From: Wildwood
I think I am going to go with the 3.27 gears. I am kinda concerned with my overall rpms at 65-70. Right now with 2.73s it is turning 1600@65 mph in 5th gear. With 3.27s,it goes to 1900 @ 65 mph. Granted the 2.73s keep the highway rpms down but it cant pull for squat. I will have to check my math to be sure.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Junior User
Joined: Oct 2004
Posts: 72
Likes: 0
I have the same set up as you do in one of my truck when I changed to 3.55's I run about 2000rpm at 65mph and about 2200rpm at 70mph and I actually started getting better milege after I changed the gears. Iwas getting about 16.5-17 mpg now I get about 18-18.5 mpg. If I keep my foot out of it.
Super Moderator
Joined: Apr 2004
Posts: 34,535
Likes: 2,836
Thread Starter
|
Tuned
Joined: Sep 2003
Posts: 257
Likes: 1
From: Wildwood
Now I am thinking of going with 3.55s because (1) they are free and (2) they are only 100 rpms away from the 3.27s. I am probably splitting hairs here but want to get it right the first time. On a separate note, is there any mpg to be lost between a limited slip and an open diff? I also wanted to put in a limited slip while I was at it and my unkle seems to think they cost horsepower in the turns while in operation. I dont do mudding or any of that sort of thing but whenever I did get stuck for some reason or other, I always said my next truck will have a posi. Lets just say he kind of got me thinking otherwise. What do you guys think?
Cargo Master
Joined: Aug 2004
Posts: 2,899
Likes: 2
From: Lynnwood, WA
Originally Posted by Machman
On a separate note, is there any mpg to be lost between a limited slip and an open diff? I also wanted to put in a limited slip while I was at it and my unkle seems to think they cost horsepower in the turns while in operation. I dont do mudding or any of that sort of thing but whenever I did get stuck for some reason or other, I always said my next truck will have a posi. Lets just say he kind of got me thinking otherwise. What do you guys think?
Thread
Thread Starter
Forum
Replies
Last Post
Studawg
1999 - 2003 7.3L Power Stroke Diesel
16
Jan 11, 2012 08:42 PM