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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

4r75 to 4r70 transmission swap?

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Old 12-03-2016, 03:33 PM
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Default 4r75 to 4r70 transmission swap?

I have a 2005 F150 5.4 with a blown transmission. I also have a 2002 F150 5.4 with a recently rebuilt transmission.

The 05 is a 4r75 and the 02 is a 4r70. As far as I can tell all the electronics are the same.

Anyone know if this swap can be done? Thanks.

Last edited by Socobarbell; 12-03-2016 at 03:35 PM. Reason: Spelling
Old 12-05-2016, 01:11 AM
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They are the same but the 4R70 is weaker. You would be better off pulling the 4r75 and tossing a rebuild kit into it.
Old 12-05-2016, 10:02 AM
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Originally Posted by ak_cowboy
They are the same but the 4R70 is weaker. You would be better off pulling the 4r75 and tossing a rebuild kit into it.

It's just a money issue this time of year. If I can do the swap myself and not have to pay out right now it'd be nice. Thanks.
Old 12-05-2016, 10:56 AM
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It can be swapped, but you will need a custom tune to properly adjust the OSS. The speedo and the computer will freak out until the calibration is done. The physical side is easy. I believe they are the same bolt patterns.




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