</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 Adam F:
<strong>3 fins, so I do have a 4cy 3rd on a V6 truck <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

See for yourself:

Diff side

Diff top

And here's my t-case:

T-Case</strong></font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Actually, that looks like 4 fins. The top fin counts too. So, it appears that you're diff is a V-6 type 4 pinion type.

The last number in the gear code was originally meant to distinquish between a truck that had LSD or an open diff. LSDs were an option on trucks for overseas markets. A 2 code originally meant open diff. It wasn't until the turbo came out in '86 that Toyota made the stronger V-6 style diff. So, it's possible that all V-6 and turbo diffs for the U.S. market were coded with a 2, signifying an open diff and the 4 code, signifying the larger 4 pinion diff, didn't come about until '89.

Anyone out there with a pre-89 truck have 4 code on a V-6 or turbo truck?

<small>[ September 12, 2002, 07:41 PM: Message edited by: Brian894X4 ]</small>