I run a 27 spline flavor in my 96 on 33s with a full detroit and 4.10s
it has been used all over tellico( for those that have been there know)
for many years so I can contest to its durability
I do take it easy on the skinny pedal and yes I do carry a spare
the cost to upgrade for me well just not in the budget
if funds where no issue then yes... it is cheaper to carry a spare and if and when it breaks well thats part of what I enjoy...
go out drive enjoy sometimes you break and bend stuff fix again.. repeat step one... its all a viscious cycle
Probably a stupid question and I got tired of searching after going a few pages of search results but I have a 99 with the 8.25 rear and I don't know how to tell if its LSD or open.
I wheeled my 27 spline 8.25 behind a 4.0L welded spider gears, 4.56 ring and pinion and 33's for well over a year and tried to break it a few times--to no avail, I sold the axle to my brother and he is now running it behind a 4cyl,5spd and 35's. You probably won't hurt that 29spl w/33's unless you are just hammer down all the time kind of a guy.
I like the 8.25. Its easy to do a gear change in providing you have the adjuster cup tools.
The aftermarket is getting better since there are so many in service still.
Detroit makes the Tru-Trac for the 8.25 which is a geared limited slip(no clutches to wear). Its as close to a locker you can get in LS, and its durable without the noise or driveability problems on slick roads.
I've set up many of these axles and no complaints with durability up to 33", and mild power. I prefer the 8.25 in every aspect better than the D-35. Of the two choices you have in your year model consider yourself lucky!