Re: 8 3/4" Third Member Swap Questions?

["dennis.1963ply" <dennis.1963ply@xxxxxxxxx>]

Thanks Nick,

I'm learning more about differentials than I will remember when I'm done.

I'm going to check the axle free play (bearing preload) today.  I will know then if installing the older 985 3rd member was a mistake.  The following I found after making the sway:

There was a difference in thrust blocks prior to 1964 that make center section interchange, as well as axle interchange problematic. The thrust block, or "axle shaft thrust spacer", it thr block that both left and right axles butt up against inside the center of the differential. Prior to 1964, all open differentials used a thrust block was approximately 1/8" to 1/4" thicker than units made after 1964.

Thanks again,

Dennis C.

On Tuesday, August 20, 2019 at 6:39:53 AM UTC-7, FuryUs63 wrote:

Gary,

The (985), 1634985 was the early (742) 2070742. The (985) casting was used 57-64.

Nick T.
FuryUs63



 On August 19, 2019 at 11:07 PM 62-65-mail...@ornocar.org wrote:
 
 
 Not remembering a 985 8.75. Confusion is contagious. :)
 
 Gary H.

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