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NV4500 with 390 FE

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Old 01-12-2018, 01:27 PM
1965kale 1965kale is offline
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NV4500 with 390 FE

Iv herd of ways to mate a NV4500 from a gasser dodge. Im assuming i would still need an adapter plate? and to use an extended the input shaft? would my ford NP205 mate up to it? I want to replace my T18, I can deal with driveshaft length changes & making mounts if they are gonna be different.
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Old 01-12-2018, 01:45 PM
jimlj jimlj is offline
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I can't help with the 390 to NV4500, I would think you would need an adapter or bell housing.

If you plan to marry the NV4500 and NP205 together you will need an adapter. Make sure you use the proper seal to keep your transmission oil from migrating to the transfer case. Running a NV4500 dry is a costly mistake.
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Old 01-12-2018, 01:56 PM
JakeHan JakeHan is offline
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Advance Adapters - they make an adapter to go from your existing bellhousing to an NV, then another from the NV to your 205 -

The TCase is where it gets fuzzy, though, I know I've talked to people that say it bolts right up, possibly with some clearancing, some say it needs an adapter.

There's also a flywheel spacer/adapter to put a ZF in there, I'll probably get blasted for this, but I like the way a ZF shifts better - another option.
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Old 01-12-2018, 08:13 PM
willowbilly3 willowbilly3 is offline
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IMO ZF is a better transmission than NV4500
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Old 01-12-2018, 08:42 PM
1965kale 1965kale is offline
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yes, i would prefer a ZF5 or 6 to be honest. I just figured it would be much more difficult to get it to work, finding the right adapter and redoing my whole clutch system, I like things just the way they are in that department, but iv said things like that before. whatever is easer/cheaper for me to do between those two options is probably the rout Ill go. Reason is, I think my t18 is about done, 350k... & I need to pull my np205 off anyway for input seal.
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Old 01-12-2018, 11:13 PM
54Hydro 54Hydro is offline
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https://www.ford-trucks.com/articles...-transmission/

Read through this, it is a bump but worth the read.
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Old 01-13-2018, 02:53 AM
todd jo todd jo is offline
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Ever consider a gear vendor? 4 hour install and shorten the drive shaft and your done. It's stupid how easy it is.
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Old 01-13-2018, 12:55 PM
1965kale 1965kale is offline
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Yea, those would be great, but all I hear about them is that there noisy, that is a major red flag for me, most of my miles on this truck are pulling a stock trailer from Montana to California and back, so quite is what I need. plus my transmission is about done anyway, & i gotta pull the Tcase off to do seals, so since Ill have everything apart, I might as well find a way to join modern times & do a 5 speed,
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Old 01-13-2018, 01:06 PM
1965kale 1965kale is offline
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Plus where I live the Nv4500/zf5 both shift better, Today is the first day in a week its gotten above 0 degrees F.. & is only gonna get up to about 5.
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Old 01-13-2018, 09:46 PM
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I did a NV4500 swap behind my 390 before I went to the 5.9 Cummins. That 5 speed will make you wonder how you ever manged to drive the truck with a 4 speed.

Read that thread 54Hydro posted very closely. That is how I figured mine up for my 76. Very informative.
I ran a divorced 205 and a 2wd tranny, but you can buy an adapter for a 4wd trans to np205 from Advance Adapters. The bolt pattern is the same for the case, but the adapter spaces it back about 2" so it can use an adapter shaft between the two.
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Old 01-14-2018, 08:55 PM
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Old 01-15-2018, 11:52 AM
1965kale 1965kale is offline
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so in that kit, does it come with an extended input shaft or flywheel spacer?
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Old 01-15-2018, 01:18 PM
JakeHan JakeHan is offline
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Doesn't appear to, must have a little longer shaft than a T18?
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Old 01-15-2018, 02:06 PM
1965kale 1965kale is offline
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hmm, Ill go do some researching on that, I couldn't imagine its a whole inch or two longer, (or however big the spacer is) but it could be, that would be mighty convenient
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Old 01-15-2018, 02:21 PM
JakeHan JakeHan is offline
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It's 3/4" according to the website, but doesn't really give any info as far as what clutch disc to use, etc...... it wouldn't surprise me a whole bunch if they don't recommend a mushroom pilot bushing and a disc with deeper splines, but I don't know.
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