Ok, the while 88 Camaro w/ little purple pin-stripe
is no longer a virgin - she got her first real mod
(outside of her getting a non-GM/Delco battery).
Thanks EVERYONE for all the help and support
and hand-holding on this - I really appreciate it.
It was fun actually (except for the cheap shim pack).
So heres the deal (for those who may follow in
my footsteps) :
Did the dial indicator thing before I touched
anything. Bought a $29 Chineese made dial-
indicator, and another $29 for the articulated
magnetic mount. (good investment I guess).
I consistantally measured 7 1/4 thousands
for back lash. I wrote that down in the book.
(factory limits for the 7-5/8 (7.625) is .006-.008
Carrier removal: - like just everyone said,
it prys out pretty easy. Nice and firm, but
comes right out with a crow bar being carefull.
There were two ground, cast shims, one
in each side. L: .2320, R: .2345 in thickness.
I set them aside.
I handed up paying $15 to get the carrier
bearings pressed on at a local 4x4 shop
that specializes in differentials. Bummer.
but I *swear*
I'm going to design/build
a took for the 7.5/7.625 GM rears, and
flood the market with them (on E-bay and
The aftermarket shim pack I got sucks!
The foil shims were fine, although all I
got was four 10 thousands, a 5, and a 3
in one side, and four tens and a 3 in the other.
But the thicker steel spacers were TOTALLY
whacked!. They varied by 4 thousands from
one side of the ring to the other, on all four
of these steel spacers. That was unacceptable.
I handed up just using the 2 single precision
ground factory spacer shims - worked great.
I futzed with all the other little aftermarket
shims and shit to get the backlash and such,
and when figguring out the preload, it
pretty much came out to what the original
2 spacer shims were, so I tapped them
right back into place, and wella, I got 6 1/2
thousands (.0065) for backlash, and my
pre-removal was 7 1/4 (.00725). and the
range is 6-8, and I was now at 6-1/2, so
can't beat that with a stick. So beware of
them aftermarket shim packs - the guy at
the 4x4 shop says thats a well known deal,
the steel space part of the set vary anywhere
from 4-6 thousands if an inch !
I put it all back together, but I wanted to
make my own oil drain plug for the cover,
since Auburn says ti change the oil every
7,500 miles, which is like every other regular
oil change. So I cobbled up a draining cover.
Take a look at the end of the sequence to
see the drain plug deal I TIG welded up:
The unit works wonderfull. It relaly does.
It stabilizes the car wonderfully, and really
pulls the car thru the curves, you can really
feel it. It just feels like it tracks much better,
and you can really feel it really digging in.
Hard to describe, but it just seems to be
really sure-footed now, and a lot more
aggressive. Its like the car now responds
to me now in the curves instead of me
responding to the car wondering all over.
So this is neat! - feel like a kid with a
brand new car. Money well spent !