87 Chevy slips out of 4x4

[dc7432]

I have a 87 Chevy 4x4 and it pops out of 4x4 I have to hold the shifter to keep it I 4x4. I adjusted the nuts on the lineage from under the cab should I adjust more or is it an internal adjustment Thanks

[Irish_Alley]

we have to know more about your truck. like what trans and transfer case it has. if its original it should be a 700r4, th400 or sm465 and transfer case could be a 205 or 208

[dc7432]

It's original T400 w/ 208, thanks again

[dc7432]

Still have the problem. Does it sounds like an internal problem? I did tighten up the linkage but it didn't fix the slipping, thanks.

[VileZambonie]

First thing to do is check the mounts, crossmember and linkage. After that check the linkage adjustment. If it's still popping out, replace the unit. You can pick up a 208 dirt cheap still which is less than a rebuild.

[dc7432]

I check and everything is fine. Are 208s the same for v10, v20 and v30 in the same year. Spline count the same. Thanks

[Irish_Alley]

the 208s are really going to depend on what trans theyre behind. 700r4 will have a 27 spline input shaft while a th400 will have a 32 as well as a sm465