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Unread 08-06-2015, 04:57 PM   #1
evan1395
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Driveshaft shortening after 231 install???

So i got my new (used) 44re installed and backed by my 231 in place of my 249. But my mechanic had to send off my rear driveline to have it shortened a tad.
Why is this? After reading and researching all these months, I dont recall reading about this being a factor in the swap?
Any ideas?

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Unread 08-06-2015, 07:45 PM   #2
jm8881
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My driveshaft barely fit after my 231 swap but I'm lifted 4.5" and have moved my axle back an inch or so.
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Unread 08-06-2015, 07:49 PM   #3
kg6mov
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If the 231 was external slip yoke then the shaft will need to be shortened slightly compared to the internal slip yoke of the 249.

Quote:
Originally Posted by kg6mov View Post
ESY:


ISY:


If you install an ESY case in place of an ISY case you may need to shorten the rear shaft by about an inch.
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I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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Unread 08-06-2015, 10:20 PM   #4
evan1395
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Quote:
Originally Posted by kg6mov View Post
If the 231 was external slip yoke then the shaft will need to be shortened slightly compared to the internal slip yoke of the 249.
It was surely an ISY.
Guess that makes sense now. This wont throw off my rear pinion angle, will it?
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Unread 08-07-2015, 12:59 AM   #5
kg6mov
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Nah, V8 shafts are so long that it doesn't matter.
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1996 ZJ Green Laredo V8, 2.5" OME and Bilsteins, 33's, Holes drilled in the roof.
1998 ZJ Platinum Limited 5.9, Backyard parts fodder
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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Unread 08-07-2015, 02:36 AM   #6
evan1395
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Ok cool.
I have the IRO rear upper adjustable arms anyway. Just in case I suppose
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