Rear gear change in '91

I am thinking of swapping the stock 3.08's for 3.55's in my '91 rear
end. A friend told be that it's not a good idea because the gears are
normally lapped at the factory and if I replace them, my diff is going to
howl. Can anybody comment on this?

I am also toying with the idea of replacing the carrier assy. with
either a new limited slip or possibly a locker. Is this something the home
mechanic should try or am I better off getting a mechanic to do it? Is it
simply a tedious thing or does it take special tools?

Well.... if your friend replaces the gears, you can expect them to howl....
However, if they are installed properly, there will be no problem. You can
either trust your friend or you can trust a mechanic. ne last thing... if
you are going to trust a cheap mechanic, you might be better off trusting
your friend.

There are good mechanics and bad mechanics...... don't even pretend to think
that a good mechanic will be happy with bad mehanic wages.


"5point0" > wrote in message
...
> I am thinking of swapping the stock 3.08's for 3.55's in my '91 rear
> end. A friend told be that it's not a good idea because the gears are
> normally lapped at the factory and if I replace them, my diff is going to
> howl. Can anybody comment on this?
>
> I am also toying with the idea of replacing the carrier assy. with
> either a new limited slip or possibly a locker. Is this something the
home
> mechanic should try or am I better off getting a mechanic to do it? Is it
> simply a tedious thing or does it take special tools?
>
>

I agree with Jim fully. Get it done by a reputable mechanic.. and yes, you
will pay a little more, but it will last. Btw... check www.mustangtuning.com
for the gears. Best prices I've seen!

-Mike

--
A happy kid behind the wheel of a 98 Mustang GT
Cold air intake
FRPP 3.73 gears
Steeda Tri-Ax Shifter
Flowmaster 40 Series mufflers (self-installed woohoo)
Hi-speed fan switch
255/60R-15 rear tires
Subframe connectors
Aluminum adjustable clutch quadrant


"Jim Warman" > wrote in message
news:OEZMd.238$gA4.65@edtnps89...
> Well.... if your friend replaces the gears, you can expect them to
howl....
> However, if they are installed properly, there will be no problem. You can
> either trust your friend or you can trust a mechanic. ne last thing... if
> you are going to trust a cheap mechanic, you might be better off trusting
> your friend.
>
> There are good mechanics and bad mechanics...... don't even pretend to
think
> that a good mechanic will be happy with bad mehanic wages.
>
>
> "5point0" > wrote in message
> ...
> > I am thinking of swapping the stock 3.08's for 3.55's in my '91 rear
> > end. A friend told be that it's not a good idea because the gears are
> > normally lapped at the factory and if I replace them, my diff is going
to
> > howl. Can anybody comment on this?
> >
> > I am also toying with the idea of replacing the carrier assy. with
> > either a new limited slip or possibly a locker. Is this something the
> home
> > mechanic should try or am I better off getting a mechanic to do it? Is
it
> > simply a tedious thing or does it take special tools?
> >
> >
>
>

If is a manual 3.73 you'll be starting off in second normal driving and
dont't think about going over 100 without screaming. If you have the
money have drivetrain direct build it for you and ship it. I had one
built using 31 spline and no c-clips shipped for $1100. I has been a
few years but it was an easy swap that you can do with a friend in you
driveway. I asked and they recommended 3.27 if your going to add a
blower.
Good luck!
Hooked 87

If is a manual 3.73 you'll be starting off in second normal driving and
dont't think about going over 100 without screaming. If you have the
money have drivetrain direct build it for you and ship it. I had one
built using 31 spline and no c-clips shipped for $1100. I has been a
few years but it was an easy swap that you can do with a friend in you
driveway. I asked and they recommended 3.27 if your going to add a
blower.
Good luck!
Hooked 87