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Old August 2nd, 2007, 11:56 AM   #1
HVYRTFT
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Ford Trans

When replacing a transmission (4R70W) in a 1998 F-150, does the new trans have to come out of ONLY a 1998, due to changes in other years, making them not bolt-up?
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Old August 2nd, 2007, 12:25 PM   #2
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They will bolt up 4.6, 5.4 and 6.8, but there are different electronics in them that will make them shift funny or not at all. I would say stick to original style.
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Old August 2nd, 2007, 12:40 PM   #3
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there should be a few years of compatibility. i'll inquire with someone who knows...
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Old August 2nd, 2007, 12:42 PM   #4
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Thanks for the help people! I'll check back later for anymore replies.
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Old August 2nd, 2007, 10:54 PM   #5
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Any Ford techs out there?
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Old August 3rd, 2007, 03:39 PM   #6
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the expert says anything 97-03 will work, just make sure the donor has the same motor as your truck. he's on the ford tech hotline in the trans department. sorry bout the wait.
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Old August 3rd, 2007, 10:47 PM   #7
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So if the donor has a 5.4, the trans WILL NOT work in a 4.6? Just making sure
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Old August 6th, 2007, 02:40 PM   #8
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according to his info, it needs to have the same motor.
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