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3.55 to 4.56 Gear Swap Complete!

3.55 to 4.56 Gear Swap Complete!

  #16  
Old 03-26-2000, 01:21 AM
Junior Member
Join Date: Feb 2000
Location: O'Fallon, Mo. U.S.A.
Posts: 3
Cool

Hey wschubbe we live in the same area. Just wondered where you had your gear change done and how much it set you back. Probably seen your truck around. What color is it?
 
  #18  
Old 03-26-2000, 08:50 PM
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Thread Starter
Join Date: Dec 1998
Location: Saint Peters, MO USA
Posts: 44
Post

Rogueford:

I had the work done at First Capitol Four Wheel Drive in St. Charles. Cost me 1,075 for both axles. My truck is two tone Black over a light tan with the Lariat package (does not have the ORP stickers).

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98 F-150 4X4 Ext Cab ORP 4.6L, 4.56 Gears, Superchip, Gibson Cat Back Single exit exhaust, TransGo Performance Shift Kit, K&N Filter, Downey SST Tonneau, Abbot Electronic Ratio Adapter. Future: shorty headers.

 
  #19  
Old 03-26-2000, 09:01 PM
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Thread Starter
Join Date: Dec 1998
Location: Saint Peters, MO USA
Posts: 44
Thumbs up

For those of you who were wondering about the fuel milage with this new setup here it is:

3.55s with Superchip=15.26 mpg average over a 10 month period (mixed city and highway). Highest mpg recorded in the above average was 16.23 mpg!

4.56s FIRST tank with Superchip=15.8 mpg (included about 60 miles in town, about 20 minutes of hill climbing on the farm, then the balance on the highway at 65 mph on hilly terrain).



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98 F-150 4X4 Ext Cab ORP 4.6L, 4.56 Gears, Superchip, Gibson Cat Back Single exit exhaust, TransGo Performance Shift Kit, K&N Filter, Downey SST Tonneau, Abbot Electronic Ratio Adapter, Black Westin Nerf Bars. Future: shorty headers.


 
  #20  
Old 02-27-2006, 02:19 PM
Junior Member
Join Date: Feb 2006
Posts: 2
Question New Question, Same area

I am planning a gear swap on my 2001 Expedition. I am putting a 6" lift on it and already have that planned out.

Is there anything special about the front 8.8 dif. that I should know about before ordering the 4.56 gears? I.E. Reverse cut, standard cut. Has anyone done this, and if so did you use the same gear cut and pinoin diameter front and back?


Thanks
 
  #21  
Old 02-27-2006, 06:20 PM
Senior Member
Join Date: Jul 2004
Location: oceanside C.A.
Posts: 3,105
Originally Posted by mcexpo
I am planning a gear swap on my 2001 Expedition. I am putting a 6" lift on it and already have that planned out.

Is there anything special about the front 8.8 dif. that I should know about before ordering the 4.56 gears? I.E. Reverse cut, standard cut. Has anyone done this, and if so did you use the same gear cut and pinoin diameter front and back?


Thanks
the front you will need for a 8.8 IFS rev ring and pinion
 
  #22  
Old 02-27-2006, 08:18 PM
Senior Member
Join Date: May 2004
Location: Cape Cod
Posts: 116
Originally Posted by kevin 3636
i have 3.55 with a 4.6L and bigger tires.they took my 3.55 to a 3.38.i lost power a 1 mpg.i put headers exhaust,KaN fipk,t- body spacer,chip,jacobs ignition.the power now is great,i was going to chang to a 4.30 or so,but when i priced it at$1500,i said no way .i can buy a powerdyne supercharger for $2000.why did you chang the gears instead of putting on a supercharger.how much more take off does the truck have now.

I would not reccomend skipping the gears for a supercharger if going with bigger tires, you are just trashing your tranny at that point my as well just pour sand in the tranny filler tube As we speak my truck is under the knife for 4:10's I was talked out of 4:56 by the owner of the shop who knows his sheet, I am running 33's and don't intend to go higher my wife needs a ladder to get in it now
 
  #23  
Old 02-28-2006, 09:55 PM
Member
Join Date: Feb 2006
Location: buckley,mi
Posts: 12
I have an 2002 f150 5.4 w/ 6" fabtech and 3" bl and 39.5 irok radials and just had 4.56's put in from 3.55 and I am running in od 1800 @ 70 and get about 13.5 city and 15 hwy.

5.4 superchip,magnaflow cat-back, 4.56's with locker, kn 77 intake, tb spacer
 
  #24  
Old 02-28-2006, 11:15 PM
Member
Join Date: Nov 2005
Location: Knoxville, Tennessee
Posts: 40
haha how did this 6 year old topic get ressurected
 
  #25  
Old 03-01-2006, 01:45 PM
Junior Member
Join Date: Feb 2006
Posts: 2
Question more help?

Originally Posted by bigtruck311
the front you will need for a 8.8 IFS rev ring and pinion
Any idea where I can purchase the reverse rotation ring and pinion? In Summit Racing I found Richmond gears but none that are reverse cut, I would take it to a shop but I have done gear swaps before and I just can't pay 1500 when I can do the work and get the gears for around 300 bucks.

Also I am planning on replacing the fluid with Amzoil fluid. Anyone used that before? I have heard many good things about their engine oil and tranny fluid, didn't know much about the gear oil.
 

Last edited by mcexpo; 03-01-2006 at 01:47 PM.
  #26  
Old 03-01-2006, 07:22 PM
Senior Member
Join Date: May 2000
Posts: 4,761
I am planning a gear swap on my 2001 Expedition...Has anyone done this?
Yes, many members...pages of info come up when this topic is searched.

Is there anything special about the front 8.8 dif. that I should know about before ordering the 4.56 gears? I.E. Reverse cut, standard cut...I can do the work
It doesn't inspire confidence when someone doesn't know the most basic of information.

Amzoil fluid. Anyone used that before?
Yes, many members...Amsoil lubricants are highly regarded.
 

Last edited by max mitchell; 03-01-2006 at 07:25 PM.
  #27  
Old 03-10-2006, 01:50 AM
Senior Member
Join Date: Feb 2006
Location: Parma, Michigan
Posts: 237
Hey Sxnate,
Do you have any pics of your truck? It sounds pretty sweet I'd like to see it!

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1999 F-150 XLT, 4x4, 5.4L, Super Cab Short Box, 3:73LS, 4R70W Trans.
Kool Blue Air Filter, Powerdyne TB Spacer
Flowpro Powerpack Si/Do w/ 4" Magnaflow SS Tips
3 Inch PA Body Lift
315-75-R16 Mastercraft Courser Mt's
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2 15" Rockford Punch P2's w/ Sony 1200w Amp
And Much More!

My Gallery
https://www.f150online.com/galleries....cfm?gnum=7219
 

Last edited by 99fordman; 03-10-2006 at 01:52 AM.
  #28  
Old 03-13-2006, 11:17 PM
Senior Member
Join Date: Mar 2006
Location: kentucky
Posts: 484
Originally Posted by alex1118
haha how did this 6 year old topic get ressurected
It's called Search....
 
  #29  
Old 05-11-2007, 06:37 AM
Senior Member
Join Date: Jul 2004
Location: Arkansas
Posts: 704
You definitely need to break in your gears.
 
  #30  
Old 05-16-2007, 02:41 AM
Senior Member
Join Date: May 2007
Location: Orlando
Posts: 2,101
So what exactly would be needed (and aprox how much) if I were to put 4.10s in my 2003 4.6 Expedition. It is not 4x4, if that matters.

I'm guessing that any smaller than 4.10 would not be of much use, right?

Just trying to get the Expy to take off a little quicker

Thanks in advance.
 

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