diff and transfercase iden.
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Freshman User
Joined: May 2009
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diff and transfercase iden.
tring to figure out what front diff. and transfercase is in my 86 f250 6.9 diesel.
these is what the tags say. for what i can make out of what they say.
tranferscase
D296 31345 21
252390 E3TA GB
front diff
3.54 E6TA - JC
610264 - 2
i know the real is a 10.25 full floter with 3.55 gears and i have a c6 tranny.
btw i know the transfer case calls for mercon fluid but all i can find is the dexIII/mercon fluid. will that be safe to use??
these is what the tags say. for what i can make out of what they say.
tranferscase
D296 31345 21
252390 E3TA GB
front diff
3.54 E6TA - JC
610264 - 2
i know the real is a 10.25 full floter with 3.55 gears and i have a c6 tranny.
btw i know the transfer case calls for mercon fluid but all i can find is the dexIII/mercon fluid. will that be safe to use??
Fleet Mechanic
Joined: May 2009
Posts: 1,460
Likes: 6
From: Bay Area, Unfortunately
The transfer case should be an NP208 if it is stock. The front axle could either be a Dana 44 (likely) or a Dana 50. An easy way to tell is if the hubs taper down (Dana 44), or it they say relaitvely the same diameter.
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
Your front end is a 44HD by the Dana BOM, 3.54 gears, open differential.
The transfer case should be a BW 1345 in that truck, not the 208, but a 208 is entirely possible as it is a direct swap though.
If it's a 1345 it will look like so:
The transfer case should be a BW 1345 in that truck, not the 208, but a 208 is entirely possible as it is a direct swap though.
If it's a 1345 it will look like so:
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Freshman User
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yep thats what my tranferscase looks like.
i believe the front hubs look all the same diameter the hole way down, i ll have to check. idk come to think of it they might have a slight cone shape, i cant remember off hand.
i believe the front hubs look all the same diameter the hole way down, i ll have to check. idk come to think of it they might have a slight cone shape, i cant remember off hand.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
E3TA-GB or E3TA-7A195-GB = Warner Model 1345.
---------------------------------------------------
Front Driving Axle
Ford ID numbers: E6TA-JB or -JC // Dana ID number: 610264-2 = Dana 44 / 3.54-1 / No Free Running Hubs / No Limited Slip.
Info source: 1980/89 Ford Light Truck Parts Catalog.
Fleet Mechanic
Joined: May 2009
Posts: 1,460
Likes: 6
From: Bay Area, Unfortunately
A little off subject, when did Ford start to use the 1345? Mine has a 208 and is a 1986 - just wondering.
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Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
ATF is the called for lube for all post 80 transfer cases, they're really not too particular about which spec it is though.
As for the 1345, Ford started using it in '80, it's most prevelant in Broncos and high GVWR F250's/F350's though. A 6.9 or 460 is a pretty good indicator of the presence of a 1345. But, like I said, a fixed rear output 208 is a direct bolt in swap.
As for the 1345, Ford started using it in '80, it's most prevelant in Broncos and high GVWR F250's/F350's though. A 6.9 or 460 is a pretty good indicator of the presence of a 1345. But, like I said, a fixed rear output 208 is a direct bolt in swap.
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