Turbo'd s.b. chev...in a 69 Camaro? maybe?

[Shannen Durphey]

Todd....!! wrote:
> 
> Jim,
> 
> I'm now mostly a Mopar man, and have a Dana 60 which has a FULL POSI
> most of the time, the posi only 'breaks' when doing a slow tight turn...
> sometimes you can actually hear the clutches 'break'/slip during this
> procedure...
> 
> Whereas the Chev type limited slips are only posi's when ya need it,
> i.e. under high load and such...

Depends.  Some GM cars use a spring loaded clutch pack that resists
axle slippage. This is a limited slip.  From time to time a detroit
locker's been available.  Some of the late 70's-late 80's 7 1/2" and 7
5/8" diffs, and I think some earlier Pontiacs, used a threaded cone
and cup type diff that was supposed to lock during wheel slip.  Later
trucks have a flyweight and gear clutch setup that turns a cam
underneath the posi clutches to reduce slip during wheel spin. 
Fragile, IMHO.  There are probably other types that I've forgotten or
don't know about.  Traction lock comes to mind, but I don't know if it
was a factory option, and don't know much about it.  
> 
> In comes that GN that was spinnin only ONE tire around the turns (the
> lighter weighted tire, i.e. inside turn tire) when the boost came
> in...(He spun out several times due to the need to spin in order to even
> come close to qualifying for further runs...needless to say, he didn't
> make the cut)

I'm finding out that stiff springs and large rear sway bar can cause
even posi-equipped cars to spin the inside rear tire.
Shannen