Ford Powerstroke Diesel Forum banner

1 - 15 of 15 Posts

·
Registered
Joined
·
2,096 Posts
Discussion Starter #1
On the OBS 92+ ford trucks are the transfercase on F150(Could be too light duty of a truck) and f250,350 interchangable? Do they share the same trans to Tcase bolt pattern, spline count and right sized yoke.
 

·
Registered
Joined
·
1,874 Posts
I wouldnt try it.
 

·
Registered
Joined
·
2,489 Posts
I doubt it. You should be looking for a BW 1356 if you are looking to stay stock. I doubt a F150 came with them, but I might be wrong.
 

·
Registered
Joined
·
36 Posts
Yep, all the F-series trucks had the BW1356 , BW4406 or the BW4407.

1356 - 1987-1997 F150-F350
4406 - 1996-1997 F150-F350
4407 - 1994-1997 F250-F350 (I believe these are diesel only and came out with the introduction of the Powerstroke in 1994)

I'm going off of memory here so if I'm wrong(which I may be), someone correct me.
 

·
Registered
Joined
·
2,096 Posts
Discussion Starter #5
Yep, all the F-series trucks had the BW1356 , BW4406 or the BW4407.

1356 - 1987-1997 F150-F350
4406 - 1996-1997 F150-F350
4407 - 1994-1997 F250-F350 (I believe these are diesel only and came out with the introduction of the Powerstroke in 1994)

I'm going off of memory here so if I'm wrong(which I may be), someone correct me.
Question for you, or anyone who knows the answer...
on my 89 F250 4x4 the Tcase follows a different shift pattern to put in it 4x4... my 94.5 has a straight pattern, all you do is pull the tcase nob back to select 4x4. on my 89 you have to pull it to the side then pull it back to ingage 4x4.
Still the same Case even though they have differnt shift patterns?
 

·
Registered
Joined
·
36 Posts
Is the 89 a diesel? From the sound of it you have a 1356 in the 89 and a 4407 in the 94.5. My 96 has the straight shift pattern and it's the 4407. I've had a few Rangers and B2s over the years and they all had the smaller 1350/1354 cases and had an offset shift pattern. I believe all the 13 series BW cases have the offset shift pattern but I've never owned a 1356 case truck to confirm this.

There should be a metal tag hanging from one of the lower case bolts with one of the above sets of numbers on it.
 

·
Registered
Joined
·
36 Posts
You could also have a 1345 case as they did come in the F-series from 1980-1989.

FWIW the 4407 is rated as an over 8500 GVW case and has a 1.5" wide chain vs. the 1356 which has a 1.25" chain. The 1345 came with a 1.5" chain from 1980-1982 and from 1982-1989 it came with a 1.25" chain. Go figure.
 

·
Registered
Joined
·
2,096 Posts
Discussion Starter #8
You could also have a 1345 case as they did come in the F-series from 1980-1989.

FWIW the 4407 is rated as an over 8500 GVW case and has a 1.5" wide chain vs. the 1356 which has a 1.25" chain. The 1345 came with a 1.5" chain from 1980-1982 and from 1982-1989 it came with a 1.25" chain. Go figure.
excellent! Ill look for the bigger chain version!
 

·
Electrical Ogre
Joined
·
12,276 Posts
The shifting pattern is all in the lever assembly. It merely moves the connecting lever on the case 2H-4H-N-4L. There's a 96 PSD in the pick and pull yard here, but that's a hell of a drive from Victoria
 

·
Registered
Joined
·
1,874 Posts
You could always just rebuild what you have.
 

·
Registered
Joined
·
2,489 Posts
You could go with a chain drive, or better yet a gear drive.

I didnt know they switched transfer cases? I guess I have the 1.25" 1345 in mine...

Arent the NP transfer cases gear drive? Is it the NP203 or the NP205 which is better, I forget.
 

·
Registered
Joined
·
36 Posts
The 203 is chain driven and the 205 is gear driven. The NP203 and NP205 are both cast iron cases.

The 203 is a full time 4wd case and requires a conversion kit to give it true 2wd. You can always unlock the hubs but the driveshaft and axles will still spin.

The 205 is a part time 4wd case and is easily twin sticked to add the capability of 2wd low as is the 203.

Both are very strong cases and nearly indestructable. The biggest downside to the 203 and the 205 is the low range. The 203 has a 2.01 low set and the 205 has a 1.96 low set. You can get a 4.1 low gearset for either case but it is $$$$. Other option to fix the low gearing issue is build a doubler and use the H/L range box off of the 203 mated to the input of the 205. Biggest downside here is the overall weight of the whole setup. If you've ever tried to carry a single 203 or 205 by yourself you know what I mean. They're damn near bulletproof because they're 100% cast iron and steel. No aluminum or lightweight anything here.


***my other hobby is rockcrawling, hence my knowledge of transfer cases***
 

·
Registered
Joined
·
2,096 Posts
Discussion Starter #13
The 203 is chain driven and the 205 is gear driven. The NP203 and NP205 are both cast iron cases.

***my other hobby is rockcrawling, hence my knowledge of transfer cases***

You seem to know your T-cases lol


another question for you guys.

I pulled my T-case it has the number 1356 on it from my 94.5

I found one for sale locally, it also has 1356 but it is from a 89 full size bronco with a 302.
Will it work?

Edit;
and also I want to take my old T case apart, Do you have to take the nut that holds yoke on for the front drive shaft to beable to split the T-case apart?
 

·
Electrical Ogre
Joined
·
12,276 Posts
You seem to know your T-cases lol


another question for you guys.

I pulled my T-case it has the number 1356 on it from my 94.5

I found one for sale locally, it also has 1356 but it is from a 89 full size bronco with a 302.
Will it work?

Edit;
and also I want to take my old T case apart, Do you have to take the nut that holds yoke on for the front drive shaft to beable to split the T-case apart?
according to the FSM, take off both flanges, then pull the switch. Set the case front-down, remove bolts, and separate.
 

·
Registered
Joined
·
2,096 Posts
Discussion Starter #15
Well looked at the other one. Mine has a slip yoke... the one i looked at has a fixed.
 
1 - 15 of 15 Posts
Top