Posted By: moon
8 3/4 third member - 04/19/16 01:06 AM
I have a 62 Dodge Polara 500 with tapered axles and 741 case and the third member is making noise. I have a 489 third member from a 69 Fury...will the 489 interchange with the 741 using my tapered or are the splines different?
Posted By: blewbyu
Re: 8 3/4 third member - 04/19/16 02:33 AM
The axles splines should be the same and it should interchange
Posted By: skicker
Re: 8 3/4 third member - 04/19/16 02:42 AM
Just check the yoke width and make sure they're the same...
Posted By: jcc
Re: 8 3/4 third member - 04/19/16 02:51 AM
The 742 was OEM I believe, so originality should not be an issue.
Posted By: NANKET
Re: 8 3/4 third member - 04/19/16 03:43 AM
Open or sure grip in the 62 Polara? There is a difference in the thrust block.
Posted By: John_Kunkel
Re: 8 3/4 third member - 04/19/16 07:45 AM
As stated, the thrust block in the differential is different, the '62 open differential axles are longer than the '64 and later. To use the 489 in the '62 you'll have to remove 1/8" from the splined end of each axle shaft.