Topic: 1940 differential swap


houseof34s    -- 08-05-2013 @ 10:25 AM
  will a 46 rear differential work as a replacement for a 40 tudor???


houseof34s


kubes40    -- 08-05-2013 @ 1:49 PM
  If you're replacing the entire rear axle assembly (housings, etc.) then you need to know the '46 is about 3/4" wider than the '40. Still, no problem. Use the '40 radius rods with the 46 rear. Place about 5/16" spacer between each rod and axle housing (two places per side) and everything will line up well.
That additional width (about 3/8" per side on the car) is hardly noticeable.




houseof34s    -- 08-05-2013 @ 2:18 PM
  will there be any problem when connecting spring shackels??

>> Thanks <<

houseof34s


kubes40    -- 08-05-2013 @ 5:55 PM
  The '40 shackles can be used. You'll need to stretch the spring a bit further of course.
I have made this swap a number of times. Usually it's for a guy with a later Columbia that doesn't want to spend the money to get the proper '40 overdrive...


houseof34s    -- 08-06-2013 @ 6:51 AM
  Will the40 torque tube and drive shaft connect-up mate-up ok?
>> Thanks <<

houseof34s

This message was edited by houseof34s on 8-6-13 @ 6:53 AM


kubes40    -- 08-06-2013 @ 2:32 PM
  The 40 torque tube and drive shaft can easily be installed to the '46 rear assembly.


Pauls39    -- 08-07-2013 @ 6:37 AM
  Seems as though the 42-48 driveshaft is an inch or so longer.


houseof34s    -- 08-07-2013 @ 8:10 AM
  Thank You sir, for your responce regarding the 40 Diff swap.

houseof34s


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