</font><blockquote><font size="1" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">quote:</font><hr /><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Originally posted by Allen:
<strong> </font><blockquote><font size="1" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">quote:</font><hr /><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Originally posted by Brian894X4:
<strong>Actually ADD does have everything to do with it. 22REs with ADD got the G58 and chain driven case from at least 1989 through 1995. As to why, it has to do with the ADD specificly allowing you to shift on the fly while moving, which was one of the big selling points of ADD. The chain driven case was combined with ADD because it could be shifted into 4WD at speed much smoother and more reliably than the gear driven T-case.</strong></font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">I stand corrected then. So non-ADD 4 cyl. still got the gear driven case in those years?</strong></font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Through 1995 the 22RE trucks that came with manual hubs and 5 speeds, got W56 trannys and gear driven T-cases.

You can still shift a geared driven T-case into and out of 4WD while moving, but the hubs have to be locked so that the front and rear shafts are turning at the same speed and it's not nearly as smooth. The chain driven cases can shifted easier at higher speeds as well.

<small>[ June 16, 2003, 01:11 PM: Message edited by: Brian894X4 ]</small>