ZF Swap
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Laughing Gas
Joined: Mar 2006
Posts: 1,083
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From: Fitzpatrick Alabama
ZF Swap
I just bought a 88 F350 diesel with a zf 5 spd with the intentions of putting it in my 84 F250, will the flywheel and clutch that is in the 84 solid fly wheel work, or do I have to use the ZF dual mass? Mainly because someone I know needs the dual mass for his truck, but his is a 97 Powerstroke, will the one from the 88 fit the Powerstroke? Is the 5 spd the same length or will I have to have a driveshaft cut.
Moderator
Joined: Jan 2001
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From: Virginia
I would keep the dual mass in your truck. I haven't heard one, but they say the solid flywheel with the zf is very noisy, and you think the tranny is going to fall apart any second at idle with the tranny in neutral.
Posting Guru
Joined: Aug 2006
Posts: 2,175
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From: Kent WA
If after the swap you overfill the tranny (through the shifter tower) with about 2 gallons of synthetic 0W30 oil or synthetic tranny fluid, then the noise issue pretty much goes away.
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Laughing Gas
Joined: Mar 2006
Posts: 1,083
Likes: 1
From: Fitzpatrick Alabama
I'm not that worried about the noise, what I want to know is whether the flywheel and clutch that is currently between the T19 and the 6.9 diesel will work with the zf 5 spd. And also whether the dual mass flywheel that is currently between the 7.3 and zf work with someone elses Powerstroke/ZF combo?
Elder User
Joined: Dec 2008
Posts: 737
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From: Page Az.
From what I understand the 7.3 idi flywheel is balanced different than the powerstroke flywheel. Not even sure it would bolt up. You can use the t19 flywheel and clutch but I can tell you that the ZF-5 speed will sound like its coming apart with the truck idling with your foot off the clutch. That much noise can't be good for the transmission. If it was me I would use the dual-mass flywheel. Been there done that.
Posting Guru
Joined: Aug 2006
Posts: 2,175
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From: Kent WA
Read through these 2 threads
This one includes part numbers to "roll your own" clutch kit...
https://www.ford-trucks.com/forums/6...-question.html
and this one talks about how to make the swap easier with a cheap body lift - almost essential if you have a turbo.
https://www.ford-trucks.com/forums/6...body-lift.html
Then take a look at the pictures in my gallery here.
https://www.ford-trucks.com/user_gal...&albumid=33293
Those 3 links should answer a lot of your questions. Hope that helps.
