[BFix] Gearing for Best Mileage

[Ken]

I had purchased 4.88 gears but sent them back and just got a new set of 4.56s for my D44 swap. After driving around and running some good trails I'll stick with the 4.56s. Now if I have an auto I may think different but so far the ZF and the 4.56s work great for me. 

Ken

 
 68 EB 5.0L / ZF 
35" BFGs / 3" Lift
4.56 ARB Front & Rear



----- Original Message ----
From: FRANK w <bbronko at msn.com>
To: bfix at broncofix.com; Ken <broncokak at yahoo.com>
Sent: Sunday, May 4, 2008 7:07:44 PM
Subject: Re: [BFix] Gearing for Best Mileage

 
So if you were to keep the 35's all the time would you stay with the 4.56  or would you go with the 4.88. I have a 5.8, ZF 5 speed, 35" tires and  getting ready to buy gears. I thought of going with the 4.88's. Thanks.
 
Frank 
 
 
----- Original Message ----- 
From: Ken 
To: NHieger at aol.com ; q.dusenberry at comcast.net ; bfix at broncofix.com 
Sent: Saturday, May 03, 2008 4:21  PM
Subject: Re: [BFix] Gearing for Best    Mileage

I have a 5.0L Explorer motor and the ZF 5 speed, 4.56 gears and 35" tires.    When I drove to VA for the Round up last summer I constantly got 20MPG on the    hi-way if I kept the tach below 2500RPM (70MPH) the worst I got was 13MPG and    that was traveling at 80MPH. I too thought about going with the 4.88 gears but    after driving both on road and off. I'll keep the 4.56 gears and maybe run    some 33" street tires for all the around town drive I do.  Last fall I    drove about 75 miles from home (150 round trip) to run with some J**p    guys and spend 6 hours in low range and only used 7 gal.s of gas. I've never    really checked the mileage doing around town driving but I'll have to    some day.
 
Ken

 
 68 EB 5.0L / ZF 
35" BFGs / 3" Lift
4.56 ARB Front & Rear



-----    Original Message ----
From: "NHieger at aol.com"    <NHieger at aol.com>
To: q.dusenberry at comcast.net;    bfix at broncofix.com
Sent: Saturday, May 3, 2008 5:23:35 PM
Subject: Re:    [BFix] Gearing for Best Mileage

FWIW, I have 4:56's in my 77 5.0 sefi/AOD, 35" BFG's. Everything was    pretty good when I was running 33's, but now that I am running 35's I kind of    wish I had gone with 4:88's. I just seem to be a bit over geared when on long    extended climbs at freeway speeds & heading into strong winds. What I need    is gear right between 3 & 4th. Having said that if I keep the speeds down    (55 or less) I can get around 17 mph.
 
Norm
 
In a message dated 5/3/2008 11:50:04 A.M. Pacific Daylight Time,    q.dusenberry at comcast.net writes:
Thanks for the      reply. That sounds about right to me. 4.56 for 33 with OD and 4.88 for 35      with OD. I'm tempted to go with 4.88’s in the event that I end up with 35’s      in the future.
 
 




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