I have a 1990 F150 4x4 with the I6 and automatic. I was wondering what transfercase the truck has and if anyone knows if there is a low gear kit available for it.

Ok if you have manual 4WD lever, its either NP-208 or Borg Warner 1354, if electronic shift on the fly, then its a Borg Warner 1356. Crawl under the truck to see the case. If it is a New Process it should have a red tag stamped on it, Borg Warner will have a blue strip of metal.

Did you mean 1345? 1354 is the Ranger/Explorer case.

Originally posted by CrazyBastard
Ok if you have manual 4WD lever, its either NP-208 or Borg Warner 1354, if electronic shift on the fly, then its a Borg Warner 1356. Crawl under the truck to see the case. If it is a New Process it should have a red tag stamped on it, Borg Warner will have a blue strip of metal.

Why? Because it's an I6? Or an F150?

I think if it's a 1990 MY it'll have a 1356, regardless of manual or push-button.

My 1356 doesnt' have blue on it, except for the silicone. It does have a yellow tag, however.

Here's a 1356, it's kinda easy to identify, note the "13-56" right there in the case :flipoff2:

http://www.superford.org/registry/users/33/139/Bronco_034.jpg

No I have been under Fords and seen NP-208s, 1354, and 1356.

I made a mistake there, I mean the 1345 not the 1354

Thanks for the info guys, I'll check under my truck tomorrow.

Do you guys know if anyone makes a low gear set for those transfercases? I'd like to have a low crawl gear setup, rather than regearing my axles

Originally posted by franky996
Do you guys know if anyone makes a low gear set for those transfercases? I'd like to have a low crawl gear setup, rather than regearing my axles

I don't think anything like that exists for any of the Borg Warner cases, or NP208 for that matter. If you find something lmk

that truck will have a 1356, end of argument. it was the only transfer case offered from 1988 to 1996, and 97 in the heavy duties, regardless of whether it is manual or electric.

Originally posted by liliysdad
that truck will have a 1356, end of argument. it was the only transfer case offered from 1988 to 1996, and 97 in the heavy duties, regardless of whether it is manual or electric.
YUP!, and no makes anything for it, because its only a "so-so" case, to upgrade it, you bascily swap it out

Originally posted by welndmn

YUP!, and no makes anything for it, because its only a "so-so" case

:shaking:

I wouldn't say it is a "so-so" transfer case. It has a 2.69:1 low range and was also used in one ton trucks so the strength must be there or it wouldn't have stayed in production for so long. Sure it may be a chain driven case in an aluminum housing but that doesn't automatically mean it is bad.

I checked it today and yes, ,it's the Borg warner. It works fine , so i was thinking of putting in a crawler gear set, but if no one makes anything for it, oh well.
I guess I'll have to regear the axles then

Originally posted by liliysdad
that truck will have a 1356, end of argument. it was the only transfer case offered from 1988 to 1996, and 97 in the heavy duties, regardless of whether it is manual or electric.

Actually that's not 100% true. From recent personal experience I can tell you at least one '97 F350 ('92-97 body style of course) came w/something other than a 1356. I wish I could find a better picture:

http://www.superford.org/registry/users/33/139/Nathan_014.jpg

Originally posted by Paul Gagnon


:shaking:

I wouldn't say it is a "so-so" transfer case. It has a 2.69:1 low range and was also used in one ton trucks so the strength must be there or it wouldn't have stayed in production for so long. Sure it may be a chain driven case in an aluminum housing but that doesn't automatically mean it is bad.
Thats why to me its only a so-so case, Its not a POS but its not all that great at the same time either

D6o, thats still a 1356 case, but the one tons and some 3/4 tons used the flange type output. i will stand by my statement that the only case used was the 1356. In 1987, the first year of this body style, some 1345s were used, but only the remaining inventory. From 1988 onward, the 1356 was used exclusively.

This case is actually quite strong. It is used quite frequently in trucks running 800+ ft-lb powerstrokes in truck pulling, and holds up just fine.

Originally posted by liliysdad
D6o, thats still a 1356 case, but the one tons and some 3/4 tons used the flange type output. i will stand by my statement that the only case used was the 1356. In 1987, the first year of this body style, some 1345s were used, but only the remaining inventory. From 1988 onward, the 1356 was used exclusively.

Dude, it's not the output that bothers me. The entire case is different. Look closely at the casing, the webbing is entirely re-worked. If it's a 1356 Ford chose to re-design it externally for reasons unknown.

That's just the best shot that I have of it, but it did not have 1356 stamped in the back like my 1356 does.

EDIT: here's another shot of my 1356; ignore the driveshaft and output and tell me it's the same as the pic I posted above of the '97 F350

http://www.superford.org/registry/users/33/139/DCP_0410.JPG

D60 is that a full size Bronco in that pic? The driveshaft seems familar.