Re: [Chrysler300] re value of sure grip differentials

["keith_A_Lang@xxxxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>]

I installed a later 489 case Sure Grip w/ 3.23 gears into my 300F without any issues, so yes, no problem!

Sent from my BlackBerry 10 smartphone.

From: paul paulholm@xxxxxxxxxxxxx [Chrysler300]

Sent: Wednesday, August 19, 2015 12:43 PM

To: Chrysler 300 Club

Reply To: paul

Subject: Re: [Chrysler300] re value of sure grip differentials

 

On 8/18/2015 6:04 PM, keith_A_Lang@xxxxxxxxx [Chrysler300] wrote:

> Fern

> I paid $700 for a 3.91 ratio 8 3/4 489 case Sure Grip about a year
> ago and it was what I would consider a good deal at that time, since
> I saw plenty of prices higher than that for Sure Grip 3rd members
> while I was looking (boy times have changed.) Be careful as to the
> casting‎ #: The 742 and 489 are the ones you want, and the 742 would
> be more appropriate for a letter car since they were the ones that
> would have been originally installed on a Letter Car (at least the
> later ones.) The other thing is that the 742 case is more easily
> rebuilt than the 489.

> You will see sometimes 741 case Sure grips on Craigslist, et al but
> those are small pinion rears and not what you want for your Letter
> Car, IMHO.

> Keith

Its been said that any Mopar 8-3/4" is usually stronger then the
Gm units of the same time frame. And plenty strong compared to the
Ford 9".

http://www.moparfins.com/Repairs/8-3-4_Rebuilding/Information_on_Mopar_Rears.htm

Now, It is possible to install a later center section in the old tapered
axle applications, its been done before. Just find a good
shop!

--
Paul Holmgren
If you think Space is the Final Frontier,
You should see my Garage!

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Posted by: keith_a_lang@xxxxxxxxx

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