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4r70w tailshaft


plknny

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Im planning on getting a whole 5.0 99-01 explorer 5.0 and swap it into my 2wd 98 ranger. I want to ditch the explorer transfer case and keep it 2wd as well as not have the drag of an unused tranfer case. My plan is to swap the tailshaft from a 2wd 4r70w. It seems easy enough now because i cant find any info on whats involved. Would i be better off swapping the whole transmission? Can i get a trans with a vss and just not use it since my rangers vss is part of the pcm?
 
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RonD

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You can do it, you just may not want to do it.

Good read here on what is required as far as disassembly of Trans: http://www.explorerforum.com/forums/showthread.php?t=157283

I would sell the AWD(trans/transfer case) and buy a 2WD with that money, make sure the 2WD has the speed sensor
You also need a 2WD drive shaft
 

plknny

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Yup new trans it is. Now about the vss, ive read that the 99-01 explorers use the abs and pcm instead of a vss like my 98 ranger. Your saying i need a trans with the speed sensor? What year/ models would have this trans and driveshaft? Would my 2wd auto extended cab ranger driveshaft not work?
 
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willy

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Id go with a 2wd tranny easyest way to go
 

RonD

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plknny said:
Yup new trans it is. Now about the vss, ive read that the 99-01 explorers use the abs and pcm instead of a vss like my 98 ranger. Your saying i need a trans with the speed sensor? What year/ models would have this trans and driveshaft? Would my 2wd auto extended cab ranger driveshaft not work?
Click to expand...
That's right, '98 Ranger would have the speed sensor on differential feeding ABS module, ABS module corrects pulses for tire size and axle ratio then sends signal to speedo, cruise and PCM, so same setup in both, opps :).

Driveshaft won't be the right length, I would wait until you have engine and trans in place before measuring.
Read here: http://www.rangerpowersports.com/forum/v8-tech/287562-extended-cab-gen-4-ranger-5-0-4r70w-trans-driveshaft-length.html
 
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plknny

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What years/ models would have the 4r70w with a speed sensor that i need? 2wd 5.0 E/F150s, 94 95 mustangs? I dont know what the vss setup is in any of them
 

RonD

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plknny

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So then any 2wd 4r70w will work? I get it that the abs/ pcm handles the speedometer, im just concerned with having problems with the 5.0 computer having an issue with a different transmission. Could there be any issues with shift points or not shifting?
 

RonD

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Same transmission, PCM doesn't care about 2WD or 4WD

Trans needs to come from a 5.0l or 4.2l(V6) to bolt to the 5.0l

A 1998 or up 4R70W would be best
In 1998, due to durability concerns, the intermediate one-way roller clutch was replaced with a mechanical diode providing extra holding capacity and longer service
Click to expand...
And I think the connector on trans change that year as well

4R70W was used in:
1996–2001 Ford Explorer or Mercury Mountaineer
1993–2003 Ford F-Series
 
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plknny

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So its getting pretty serious now. I got 99 mountaineer that was in a minor front end collision with 138k. Im ready to get a transmission and cant find a reasonably priced 4r70w that doesnt have 300000 miles on it or hasnt been in a junkyard for 12 years. Should i keep looking or start considering an aod trans. What are the differences? Which ones better?
 
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willy

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4r70w is best way to go 98 or newer for computer reasons
 
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