I saw posted somewhere that you need the linkage AND shift fork off of a 4spd tcase to make this work. I'm just a little fuzzy what exactly the shift fork is. Is it just the actual lever that comes up through the floor boards?
I guess I'm still a little confused, do you HAVE to have this off the 4spd tcase? Poser you sound like there is an easy work around, but I couldn't really tell what you're getting at.
Sorry if I sound like an idiot, I don't actually have these sitting in front of me to look at and tinker with. I'm just trying to get a description of the part I need to who I'm buying this stuff from. I getting a whole pallet freighted to me in the morning and wanted to make sure I didn't miss anything.
Yes, you have to have this. Its the part thats circled. The rod is longer on a 4 speed case than on a 3 speed case, which is why you need it to make the front engage properly. You also need the 4 speed tcase shifter linkage - the part that comes thru the floor. Have fun.
THANKS! That helps a lot. I think I get it now, with Woody's idea I woudln't be able to use my 3spd drive lives becasue the flange would change, but poser's idea I could just change the actuator and use my stock drive lines? (re-lenghtened of course)
Thanks for the info guys, a huge help for sure. My last question is what parts of the actual linkage do you need for this combo? I'm guessing the levers and then the bracket that mounts to the tranny? Any pics would be great!
If you have a three speed floorshift type of shifter (not the vacuum type) the only difference between the operating rod to the shift fork is the length. So, if you're desperate, it's probably possible to make a longer input rod for the three speed shift assembly out of steel stock. It needs about 2" more length to work with the four speed floor shifter.
Is it a for sure thing that the 3 speed shift mechanism won't work with 3 speed floor shifter? I doubt it. Both shift exactly the same way inside the front tail housing.
the issue is with the length of the roughly 1" dia. steel shift plunger that exits the 2wd/4wd shift housing on the front nosecone. you need a different length for the 4 speed t-case shifter to work.
Don't forget the top cover lever is at 90 degree difference from the 3 speed to the 4 speed. If you just change the shift fork actuating rod on the 3 speed case you'll also need to change the front drive transfer case flange.
Thanks for the info guys. Even though this is an old thread, I am still working on the issue, so any input is appreciated.
cruiser_guy said:
Don't forget the top cover lever is at 90 degree difference from the 3 speed to the 4 speed. If you just change the shift fork actuating rod on the 3 speed case you'll also need to change the front drive transfer case flange.
I having a hard time visualizing what you are talking about, without having out of the rig it to look at. Any chance you have any pics that can show the difference?
Not the best picture but the two circled items are what you "shift" when you go from 2wd to 4wd and from high to low. Since the case is now ~4 inches further back, but the shifter is still in the same spot (assuming you already have a floor shift case) You need to extend the 2/4 rod or change it out with one from a 4spd. and you need to modify the low high rod (not shown)
I think it is either itme 4 or 6 on the sor shematic
Yes, you can do that. You need to ensure that the flange matches the driveshaft you're using. Also as I said earlier, the arm in the top cover is also different on the 4 speed (they are offset 90 degrees).
