Ford 8.8 vs 9 diff
Thread Starter
|
Junior User
Joined: Mar 2001
Posts: 50
Likes: 0
Ford 8.8 vs 9 diff
I need some expertise from the group ....
I've read that you can't put 4.10's in a Ford 8.8'' diff (I currently have 3.55) without changing the carrier ... does this mean that once you change the carrier for the taller gears, that you've got a Ford 9'' diff? Or is that something completely different?
Thanks for your help.
1995 F-150 5.0 4x4
I've read that you can't put 4.10's in a Ford 8.8'' diff (I currently have 3.55) without changing the carrier ... does this mean that once you change the carrier for the taller gears, that you've got a Ford 9'' diff? Or is that something completely different?
Thanks for your help.
1995 F-150 5.0 4x4
Senior User
Joined: Dec 2000
Posts: 115
Likes: 0
From: Pedley
Ford 8.8 vs 9 diff
I had replaced the stock 3.55 gears with 4.10 gears a couple years ago on my "88 F150. It has an 8.8 rear and there was no need to change anything other than the ring and pinion and assorted worn parts. HTH -greg
New User
Joined: Mar 2002
Posts: 15
Likes: 0
From: murphysboro usa
Ford 8.8 vs 9 diff
last year I had to do that same thing. I was told that if i whent any lower than 373 I would have to change the carrier. To make along story short I ended up buying the hole ball of wax and since no shop would do it for me, I ended up doing the hole thing in the living room. But now that its done I still have second thoughts about not changing to a 9 inch when I had the chance.
good luck
good luck
Senior User
Joined: Jan 2002
Posts: 262
Likes: 0
Ford 8.8 vs 9 diff
The 8.8 doesn't have a carrier break. You can put whatever gears are available for it in there and not have to change the carrier. Perhaps the people that told you that were reffering to the front axle. The Dana 44 has a carrier break at 3.73.
-Cope
95 F-150 4x4
4.9L M5OD
Front Truetrac Rear Detroit
3.73 Precision Gears
Warn Premiums
4" Superlift Superunner
-Cope
95 F-150 4x4
4.9L M5OD
Front Truetrac Rear Detroit
3.73 Precision Gears
Warn Premiums
4" Superlift Superunner
Thread Starter
|
Junior User
Joined: Mar 2001
Posts: 50
Likes: 0
Ford 8.8 vs 9 diff
Thanks for the information about the diffence between the 8.8 and the Dana 44; that clears things up a bit.
Where would you get the different carrier that would be needed for the Dana? I don't see much advertised for the Dana 44. Also, do the same gears fit the Dana as the 8.8? Again, I don't see gears advertised for the Dana 44.
Thanks for any help.
Where would you get the different carrier that would be needed for the Dana? I don't see much advertised for the Dana 44. Also, do the same gears fit the Dana as the 8.8? Again, I don't see gears advertised for the Dana 44.
Thanks for any help.
New User
Joined: Mar 2002
Posts: 15
Likes: 0
From: murphysboro usa
Ford 8.8 vs 9 diff
I found the rear set at summit but if what cope said above is true then that to was a mistake. the front came from 4-wheel parts holesale I found there ad in petersons magazine, they now sell front and rears together as one kit. Also be sure to check and see if you need a reverse cut/rotation for your truck. I was told that there are 2 dana 44's and the reverse cut is for fords( dif on d-side.) I mention this because I found after I got the wrong stuff from summit. Thats when I checked out 4-wheel parts and found where I should have been ordering from the get-go.
Senior User
Joined: Jan 2002
Posts: 262
Likes: 0
Ford 8.8 vs 9 diff
You can find the different carrier at just about any mail order store that deals in gears; west coast differentials, randy's ring & pinion, reider racing, 4 wheel parts, etc. A new carrier shouldn't cost much, probably less than 40 bucks I would guess. Now would be the time to consider getting some sort of full carrier replacement traction aid, like a limited slip, instead of the regular open carrier. As for the question of whether the same gears will fit. Well, I'm not sure I know what you mean. If you mean can you get the same ratios, then the answer is yes. If you're talking about the same physical size then the answer is no. The dana 44 has an 8.5 inch diameter ring gear. The 8.8 has an 8.8 inch diameter ring gear. The pinion gears are also different sizes, but I couldn't tell you the dimensions right of hand.
-Cope
95 F-150 4x4
4.9L M5OD
Front Truetrac Rear Detroit
3.73 Precision Gears
Warn Premiums
4" Superlift Superunner
-Cope
95 F-150 4x4
4.9L M5OD
Front Truetrac Rear Detroit
3.73 Precision Gears
Warn Premiums
4" Superlift Superunner
Trending Topics
Post Fiend
Joined: Nov 2001
Posts: 7,698
Likes: 4
From: Neenah, Wisconsin
Ford 8.8 vs 9 diff
One more thing to watch for if you do decide to do your own gear swap is to be careful when you get new bearings for the front dif. I ordered a dana 44 gear instal kit from summit and the inner pinion bearing in the Ford Case is different than the bearing included in most install kits. Go to the ford dealership and get an engineering number off of one of those bearings to make sure that its the right one. Its next to imposible to get that bearing back off the pinion if you do put the wrong one on. It'll fit over the pinion,,,but the race won't fit in the case. Also the dana 44 is a very popular axle, you should be able to find anything you want for one.
Ryan
Ryan
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: Jan 2002
Posts: 262
Likes: 0
Ford 8.8 vs 9 diff
[updated:LAST EDITED ON 06-May-02 AT 04:39 PM (EST)]That is good advice. I had the same exact thing happen to me, it made for a very frustrating day since I didn't realize it until everything was apart.
-Cope
95 F-150 4x4
4.9L M5OD
Front Truetrac Rear Detroit
3.73 Precision Gears
Warn Premiums
4" Superlift Superunner
-Cope
95 F-150 4x4
4.9L M5OD
Front Truetrac Rear Detroit
3.73 Precision Gears
Warn Premiums
4" Superlift Superunner
Thread
Thread Starter
Forum
Replies
Last Post
Ford938
Clutch, Transmission, Differential, Axle & Transfer Case
2
Dec 29, 2013 08:13 PM
TonyJestis
1987 - 1996 F150 & Larger F-Series Trucks
2
Nov 4, 2012 05:38 PM
BlueOvalBud
1987 - 1996 F150 & Larger F-Series Trucks
59
Feb 24, 2011 04:49 PM
johnny2000
Clutch, Transmission, Differential, Axle & Transfer Case
2
Aug 4, 2005 08:46 AM
JustinH
Clutch, Transmission, Differential, Axle & Transfer Case
1
May 27, 2004 08:02 PM
