Probably an ignition problem,start with replacing thespark plugs, spark plug wires, cap and rotor.
1992 Chevy s10 jumps out of 5th gear
3.08
if 1st 4rd and 5th and reverse do fine, it would have to be in the transmission. clutch problems are noticable in all gears.
It may have broken motor mounts.
Yes, it could.
Burned or worn out synchronizers
Same as the rear.
An S10 is the same as a Chevy S10.
That manual transmission doesn't use gear oil. You can use Mercon ATF.
Nope.
no they will not fit the gear ratio is different and the 4x4 axles are longer you will chew out the transfer case as soon as you put it into 4x4 on something packed
your clutch is probably shot