Two Speed Transfer Box

Lynn Eades · #1 19-08-10, 11:23

No one has answered your question yet, have they?

Ken Hughes · #2 21-08-10, 05:53

Hi Lynn,yes and no would be the answer so far,i think there is some good advice though.
I will probably strip the Chev transfer case down and try and see what will fit the Ford transfer box,as long as its not too much trouble to make one out of two.
It is only as a spare transfer box that i do this,
And there are no C30/60L around here that are in need.

hrpearce · #3 21-08-10, 10:38

Ken, I haven't had either transfer case open but my Chev case has some Ford external parts on it. The only difference I found on the externals was the outside diamenter of seals. I looked in the manuals and while you can count the teeth in the Chev one the Ford one has fingers and spanners in every picture but they looked like they were the same.

Grant Bowker · #4 25-08-10, 22:40

I'm finally ready to take a stab at answering this.
Using the parts listings for the C60L and F60L as source:
For the front axle declutch assembly the housing, shaft, shift fork and the clutch to engage into the transfer case proper all have common part numbers so although I didn't check it seems the whole assembly is the same.
For the PTO assembly the housing, sliding clutch, bearings, shift fork (also a common # to the front axle disengage fork) share coomom part #s Ford & Chev, again I think the whole assembly is probably the same.
Transfer case output shaft and gears has same part # for both types, idler shaft and gears have same part #s, input shaft and gears also have common #s between brands.
The case housings have individual part #s for the 2 brands.
On what I can see, it looks as if both makers used the same or at least similar internals (most seem to have GM style part #s perhaps indicating designer?) within their own cases. The bearings that I checked seem to be the same part #s but I didn't check to see that all of the cones pressed into the case were the same (could have used the same bearing with different cones to match different size holes in the cases).
Perhaps different chassis led to different mounts (and as has already been mentioned different designs for mounting the T case shift) and thus different cases?

Ken Hughes · #5 26-08-10, 07:36

Thanks for the reply Grant,What i wanted to hear!.
Over the next couple of months we will strip down the two boxes and try a rebuild.
With what you say it looks as though it might work,good stuff.
Will keep progress posted, cheers.

Ken Hughes · #6 10-10-10, 08:45

So far all the internals from the Chev box look as though they will fit the Ford,including bearings.all seem to be the same.

Ken Hughes · #7 10-10-11, 06:50

Update,so far the chev internals do have some differences,ie,longer shaft length on one of the main shafts,but if you use all the chev internals shouldnt be a problem.
ALL the declutching units on both transfer boxes ARE GM.that is the Ford box and the same with the Chev box! i can see the purists sqirm over that!.
Some of the main box bearings appear to be the same as on a GMC as well.
To be continued