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Old 05-26-2021, 06:05 PM   #1
Jmoney01
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PTO swap question

I am putting a nv4500 in my 1980 1 ton. I swapped the unit from the old 465. Problem is, the nv4500 housing is larger and will not allow the drive shaft to bolt up to the pto. Do they make different PTO units that space this out farther? Is there a different solution?
Thanks guys
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Old 05-26-2021, 06:35 PM   #2
kipps
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Re: PTO swap question

I will admit, I didn't think the pto units would be compatible between a sm465 and a nv4500. Make sure that the gears are definitely compatible before you run it, otherwise you'll ruin both the transmission and the pto unit.
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Old 05-26-2021, 10:26 PM   #3
v30crewcab
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Re: PTO swap question

yes they take different internal gears. and they have different offset housings as well. also depends on what year your nv4500 is. the early and late ones take a different gear too. one is 25 teeth I believe and the other is 30, due to the different 1st ratio. I have one off a 92-93 nv4500 here, but its only touching half of the tooth as it needs a 30 tooth gear in it. I was mocking it up to see if it would work but it won't.
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Old 05-27-2021, 05:29 AM   #4
Jmoney01
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Re: PTO swap question

I'm not positive on the year of transmission. Tag on top, correct?
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Old 05-27-2021, 07:01 AM   #5
sweetk30
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Re: PTO swap question

Shifter tower style help id it .

Early is pop in like 465

Late is 4 bolt newer style .

As said you NEED the correct pto parts for the change over from trans to trans .
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Old 05-27-2021, 09:08 AM   #6
Jmoney01
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Re: PTO swap question

The shifter itself is not bolted in, it's like the 465
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Old 05-27-2021, 05:51 PM   #7
1976gmc20
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Re: PTO swap question

Wow, I must have been lucky!

Almost 40 years ago I bought a PTO out of the junkyard and slapped it on an SM420 and it worked just fine
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Old 06-27-2021, 06:30 PM   #8
Dodgeguy1942
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Quote:
Originally Posted by Jmoney01 View Post
I am putting a nv4500 in my 1980 1 ton. I swapped the unit from the old 465. Problem is, the nv4500 housing is larger and will not allow the drive shaft to bolt up to the pto. Do they make different PTO units that space this out farther? Is there a different solution?
Thanks guys
are you interested in selling the pto
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Old 06-29-2021, 09:39 PM   #9
Jmoney01
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Re: PTO swap question

Sure
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Old 06-30-2021, 01:09 AM   #10
kwmech
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Re: PTO swap question

I've got a brand new PTO and kit for an early 4500 that I never used. Current orientation is Left side rear facing. I was going to install the 4500 in my tow truck replacing the 465, but I ended up selling the truck before install.
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Old 06-30-2021, 07:29 AM   #11
kipps
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Re: PTO swap question

Quote:
Originally Posted by kwmech View Post
I've got a brand new PTO and kit for an early 4500 that I never used. Current orientation is Left side rear facing. I was going to install the 4500 in my tow truck replacing the 465, but I ended up selling the truck before install.
If it was a late 4500, I'd be quite interested in that. Where do you go to buy a new pto kit?
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1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!
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Old 06-30-2021, 11:25 AM   #12
kwmech
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Re: PTO swap question

I got mine from 6 states


http://www.sixstates.com/products/ca...p?category=PTO
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Old 06-30-2021, 02:15 PM   #13
Jmoney01
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Re: PTO swap question

I bought one from a local truck supply house
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