checking an imperial rear end ratio??

[dardal@xxxxxxxxxxxxxxx]

The good thing of the SureGrip (posi was the Cheby term) is that you can turn 
both rear tires together (w/out it, they tund to rotate independently, so this 
test is harder).  However, the Chrysler rears have tags on them that give you 
the ratio.  On my 68 sedan, it was covered with grease, so I could not find it, 
but later when I had some rear end work, we found it.  Its hard to determine 
the ratio without the tag, but not impossible.

As far as I know, all Imperials from early 60's through 71 (possibly 72) had 
2.94's as the only available ratio.  Apparently, there was a 3.23 option for 
early wedge cars (the Car Life 61 road test in the site has a 3.23).  From 72 
or 73 on, the standard ratio was 3.23, but I know at leat of one 75 owner who 
claims he has a 2.71.
D^2, 268's, one w/ SureGrip, both 2.94's.

Quoting Kerry Pinkerton <pinkertonk@xxxxxxxxx>:

> Put a chalk mark on the ujoint at the rear axle and one at a rear tire. 
> Rotate the tire 1 complete turn counting the revolutions of the ujoint. 
> The number of turns of the Ujoint is the ratio.  If you count 10 turns
> of the tire then divide by 10 on the number of Ujoint rotations, you
> will get a more accurate reading.  It helps to have someone to help you.
>  
> 
> KerryP
> Patch panels fabricated
> Imperials -- 50 Limo, 57 roadster, 61's, 64, 68 Convert, 73, a 66 300
> and a bunch of lesser marques
>   ----- Original Message ----- 
>   From: BIGDOG1(PHIL JR) 
>   To: mailing-list@xxxxxxxxxxxxxxxx 
>   Sent: Tuesday, January 14, 2003 8:45 AM
>   Subject: IML: checking an imperial rear end ratio??
> 
> 
>   who can tell me how to hand spin the axle in order to determine what
> the ratio of a posi rear is??
>    
>   thanks for a quick answer.
>    
>   phil
>