Older trucks with 4auto vs ours?

[truckguy82]

So I probably going to v8 swap an fj40. I really really want my l86 drivetrain with 4auto and everything. It rains a lot here so 4auto will be nice with 400hp in an fj40.

 

The problem is, I believe swapping an l86 is far more complicated than an LS.

 

My question is, if I use a transfer case from an LS truck with 4auto, does it operate/feel the same as it does in our trucks?

 

not even sure what years they had 4auto, pretty sure they even had it in 1999 but I believe it was different back then.

 

Thanks