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Old 05-18-2011, 08:09 AM   #1 (permalink)
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NV4500 4WD->2WD Conversion

I have a '99 NV4500, 23 spline output with the Dodge 6 bolt pattern 4WD tail housing and want to convert it to 2WD for a divorced t-case setup.




I've searched and spoken to a few people including Steve/Advance Adapters and Jim Clark/Jim Clark Enterprises. The consensus is to swap out the Dodge parts to GM parts including the main shaft and tail housing. Neither were sure what additional parts hence this thread...

Ideally, the out put on the new main shaft will have the same spline count as the 435 in the second picture. From there, I'd like to be able to re use everything from the yoke back off the 435.
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Old 05-18-2011, 08:48 AM   #2 (permalink)
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I did the opposite; mine came out of a 2wd Dodge diesel. All I bought was the 4wd mainshaft, 5th gear nut (the mainshaft was a newer design), and tailhousing. Then spent a bunch of time swapping all the gears/synchros/shift collars over. You might have to mess with the preload shims under the 5th gear if the endplay changes; mine didn't.

I might still have the 2wd mainshaft and tailhousing somewhere, but the Dodge mainshaft is a slip yoke style instead of a fixed yoke, and it's a pretty big spline count.
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Old 05-18-2011, 09:53 AM   #3 (permalink)
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I appreciate the response. Another member just pm'd me about having the 2wd GM parts so at the minimum I hope to get the tail housing.
I might have to go with a new main shaft depending on the spline count of the 435 output / yoke on the back of the 435. If so, I'd like to get a 5th gear update kit too. Once it stops raining, I'll pull the yoke off the 435 and check the spline count.
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Old 05-18-2011, 11:01 AM   #4 (permalink)
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Did your NV4500 have a 1410 yoke or the 1350 balanced unit?
Do you remember what the spline count was?
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Old 05-18-2011, 11:15 AM   #5 (permalink)
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Quote:
Originally Posted by LowDown View Post
Did your NV4500 have a 1410 yoke or the 1350 balanced unit?
Do you remember what the spline count was?
Not sure on the driveshaft/u-joint, as it was about 6 years ago that we parted the truck out...but the diesel 2wd mainshaft is 31-spline.

Like I said, it's a slip yoke but I don't think it'd be that big a stretch to drill/tap a hole in the mainshaft, bottom the yoke on the shaft, and bolt it in place.
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Old 05-18-2011, 01:12 PM   #6 (permalink)
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Hmm where is everyone getting the parts to swap? I need a 4wd chevy main shaft.

Have a 2wd chevy that I want to go to 4wd.
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Old 05-18-2011, 02:37 PM   #7 (permalink)
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Also guys, FYI, the ladies @ Quad4x4 are as nice as they can be but have no technical knowledge. Dan the Gear Man who wrote the tech content of the website has retired. Amanda told me that if you email sales@4x4tech.net, they will forward the email onto Dan's personal email address..
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Old 12-19-2012, 02:06 PM   #8 (permalink)
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nv4500 4wd to 2wd?

I have a 350 tbi chevy motor and a nv4500 that i want to drop into a 67 chevy c10 shortbed, but the tranny i got came from a 94 z71 4wd. I'm having a hard time trying to find the tail shaft housing from a 2wd that way i can use the tranny for my project and not have to look for another tranny. Is there a place i can order an adaptor kit or what can i do to fix this problem?
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Old 12-19-2012, 05:16 PM   #9 (permalink)
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Quote:
Originally Posted by copenhagenjunkie06 View Post
I have a 350 tbi chevy motor and a nv4500 that i want to drop into a 67 chevy c10 shortbed, but the tranny i got came from a 94 z71 4wd. I'm having a hard time trying to find the tail shaft housing from a 2wd that way i can use the tranny for my project and not have to look for another tranny. Is there a place i can order an adaptor kit or what can i do to fix this problem?
I would get dodge 2wd output and tailhousing off of ebay, or put a wanted add here on pirate. Lots of people are ditching those parts to convert for a 4wd. Someone wants the parts you are taking off, and needs what you have. One man's trash...
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Old 12-20-2012, 06:59 AM   #10 (permalink)
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Thank you for the info, it was much needed and i have a direction to follow now
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