Re: [FWDLK] 200030593274 eBay

[Mike Apfelbeck <moparmike72@xxxxxxxxxxx>]

The correct term is actually Sure Grip, Positraction or "posi"
refers to a GM part.
The earlier Sure Grip unit had four spider gears and the later one had
two, they are interchangeable as complete units. The earlier one is
stronger and is the preferred one to use if you plan to go drag racing or
whatever.

Mike 

At 03:49 PM 9/25/2006, David Homstad wrote:
> Wayne, 
>  
> If I remember correctly, there was an 8.75 carrier with 4 pinion gears in
> 1956, and possibly earlier. Anybody know if this has any
> interchangeability with later units with Posi???? Or is it a completely
> different design? 
>  
> Dave Homstad 
> 56 Dodge D500 
>  
> -----Original Message-----
> From: Forward Look Mopar Discussion List
> [
> mailto:L-FORWARDLOOK@xxxxxxxxxxxxx]On Behalf Of Wayne
> Graefen
> Sent: Monday, September 25, 2006 7:40 AM
> To: L-FORWARDLOOK@xxxxxxxxxxxxx
> Subject: Re: [FWDLK] 200030593274 eBay
>  
> The 8.75 carriers are interchangeable from '57 forward many
> years.
>  
> W
>  
> ----- Original Message ----- 
> From: Paul Holmgren
> Sent: Sunday, September 24, 2006 3:15 PM
> Subject: Re: 200030593274 eBay
>  
> > On Sep 24, 2006, at 1:12 PM, Wayne Graefen wrote:
> > 
> >> For many years I have thought Chrysler's first limited slip was
> the 
> >> '58 Sure Grip after a little testing in some '57 Imperials and
> the a 
> >> very few 300Cs and Adventurers in '57 when it didn't have a
> special 
> >> name. 
> >> I also thought Packard was first in the industry with their
> limited 
> >> slip in 1955. 
> >> Now, just last night a fellow was telling me he had two '54 New
> >> Yorkers and BOTH were limited slip and then this morning I see
> this on 
> >> eBay.
> >> Input?
> >> Wayne
>
> Some years ago I hauled a complete rear axle assembly I pulled out from
> under a 57 NewYorker 4 door to a repair place. I myself removed it from
> the car I junked in the early 70's
> It languished for years buried somewhere in the garage.  When one of
> the 
> boys and I re-discovered it, it turned out to be a limited slip
> unit.
> Imagine my suprize!!
>
> Well, the shop owner understood what I wanted to use this in, and knew
> before he opened it up that it was a limited slip,  But the work
> didn't 
> get done as soon as I expected, he needed me to revisit the shop before
> he completed the work.  Turns out the limited slip part of the axle
> was 
> dated 1970!!  the gears were marked and ID'ed as a much newer unit
> then 
> the rest of the axle housing and other parts.
>
> -- 
> Paul Holmgren
> 2 57 300-C's in Indy
> Hoosier Corps L#6
>
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