Re: [Chrysler300] grip

[Bill Huff <czbill@xxxxxxxxxx>]

If memory serves, then the 489 third member started in late 1969 or 
early 1970.  It should have a finer spline pinion shaft.

Bill Huff


At 12/19/200704:02 PM, Richard Osborne wrote:

>Dave,
>
>The numbers you have provided are the casting numbers. These have 
>nothing to do with gear ratios inside or wether or not it is an open 
>or sure grip rear. Any of these casings could have ratios ranging 
>from 2:76 to 3:91 (and maybe others from Chrysler)
>
>I assume these "pigs" are out of the rear end housing. If they are 
>still in the housing AND they have not been out before, there will 
>be a small stamped metal tag that goes onto one of the housing studs 
>that tells the gear ratio and will say "sure grip" if so equipped. 
>If it is not a sure grip, then only the ratio is stated. This is the 
>only exterior way to tell the ratio and status.
>
>The only way to tell if it is a sure grip if the pig is removed is 
>to look inside. There were 2 types of sure grips that Chrylser used 
>in 8 3/4 rears. A spring type (not serviceable) and a clutch type 
>(which is serviceable with new clutches). If you can see the spyder 
>gears easily, then it is probably an open rear. If these are not 
>readily visible, it may be a sure grip.
>
>I can't remember off the top of my head which casting number is 
>correct for which year if you are into the numbers matching thing.
>
>Hope this helps.
>
>Richard Osborne
>
> >>> david dumais 
> <<mailto:dvd_dumais%40yahoo.com>dvd_dumais@xxxxxxxxx> 12/19/07 11:13 am >>>
>After checking the part # on my 3:23 unit, it is 2070742, with a 
>small 's' below the number. Is this a sure grip? I can see gears and 
>cross shafts.
>
>The other unit is 2881489, with a '9' on the opposite side. This 
>unit has springs visible, and the ratio is 3:55 to 1. This is a sure 
>grip unit of some kind. It has 21 bolts on the ring gear.
>
>I assume this is not the correct diff. for the K. If the 742 is a 
>conventional rear and not a sure grip, can the center drum from the 
>489 be intsalled in the 742, or should I seek a 742
>for real sure grip? Dave
>
>---------------------------------
>Be a better friend, newshound, and know- it- all with Yahoo! Mobile. 
>Try it now.
>
>[Non- text portions of this message have been removed]
>
>


[Non-text portions of this message have been removed]



To send a message to this group, send an email to:
Chrysler300@xxxxxxxxxxxxxxx

For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm

For archives go to http://www.forwardlook.net/300-archive/ 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/Chrysler300/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/Chrysler300/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:Chrysler300-digest@xxxxxxxxxxxxxxx 
    mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    Chrysler300-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/