2.9X posi IRS pumpking donor/halfshaft q?

[Shannen Durphey]

Gary Derian wrote:
> 
> Thanks for reminding me.  I know about the Vette - just forgot.  Actually,
> only the latest C5 Vette does not use the driveshaft as an upper control
> arm.  That's the danger of using always or never.  The Jaguar also has a
> fixed halfshaft.
"You should never use never, you always seem to get caught." ; )

I was thinking of the two upper trailing(?) arms on the c4 (and 81,82)
Vette, which seems to take some of the load off the halfshafts.  There
is still no direct support provided for the top of the knuckle (in
this design), but this seems to help.  These rods have bushed bolt
holes, much like a control arm, and when the bushings wear even a
little, you feel some strange movement in the corners and on
acceleration.  C5 design finally catches up with other designs of 20+
yrs ago. 
> 
> Gary Derian <gderian at oh.verio.com>
> 
> > Gary Derian wrote:
> > >
> > > Those old Datsuns used regular U-joints and ball splines to accommodate
> the
> > > length change.  All front wheel drive and independent rear suspension
> rear
> > > wheel drive cars use halfshafts that accommodate length change.
> >
> > Not Corvette up to 1980.    FYI.
> > Shannen