1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Swapping a nv4500 into my 1st gen help

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Old Sep 11, 2010 | 08:00 PM
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Default Swapping a nv4500 into my 1st gen help

so i have a 1993 cummins 4x4 with a auto and i am getting ready to put a 5 speed in it have a few questions
will a 2gen pedal assembly work in mine and any other tips of info will help
 
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Old Sep 11, 2010 | 10:22 PM
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i cant tell you is the pedal will work or not since i have a chevy but i dont think they will. as for the swap its pretty straight forward.
'youll need a transmission, bellhousing, clutch master slave and line, new trans crossmember, 5 speed drivelines, clutch pedal and clutch/flywheel. i think thats about it
 
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Old Sep 12, 2010 | 06:27 AM
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friend of mine just did this and the pedals from the second gen will work. Also I think you will need the adapter for the manual transmission. The adapter is mounted to the back of the engine.
 
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Old Sep 12, 2010 | 10:15 AM
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Originally Posted by rocktoy
friend of mine just did this and the pedals from the second gen will work. Also I think you will need the adapter for the manual transmission. The adapter is mounted to the back of the engine.
if your going with an nv4500 that is correct. if you run a getrag you dont need it
 
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Old Sep 12, 2010 | 11:45 AM
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ok so im off to get pedays out of my buddies 2nd gen still need a 5 speed have a line on a 4500 out of a 2nd gen dodge for 6 bills but still lookin for getrags to
already have slave and throw out and clutch and and nv4500 with a snapped input shaft
 
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Old Sep 12, 2010 | 11:17 PM
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for 600 bucks swoop it up. i got 1200 for my last 4x4 getrag hell pay 600 for the nv4500 and ill give you my brand new rebuilt getrag!
 
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Old Sep 13, 2010 | 06:46 PM
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ok in that case what about just rebuilding the nv4500 i have with a snapped in put shaft
 
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Old Sep 13, 2010 | 10:40 PM
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Originally Posted by 450sandridr
ok in that case what about just rebuilding the nv4500 i have with a snapped in put shaft
i think you can get billet input shafts fairly reasonably priced. i see them sell used for billet ones for like 3 or 400 bucks fairly often
 
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Old Sep 14, 2010 | 10:40 AM
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decieded to just sac up and buy the good nv from my buddy for 6 bills now i need aclutch fml
 
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Old Sep 14, 2010 | 11:28 AM
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You do know that if you use the 2nd gen block adaptor (plate), to run the NV4500, you need to use the starter, as well, right?
The block plates are the same for autos or manuals.

You'll also have to tweak the top of the framerail up to get the starter to clear the rail.

Noone mentioned the transfer case.
There is an automatic and a 5 speed version in the 1st gen Cummins era trucks.

The Dodge automatic NP205 transfer case has a 23 spline input, the 5 speed has a 29 spline input.
You either need the 29 spline case, or have a conversion coupler built to put the auto one behind the NV4500 or Getrag.

Another option would be to find an NV4500 from behind a '92-'02 Dodge GAS (NOT V-10 gas) application, which is a 23 spline output and has a 1-1/8" 10 spline input, in '94-'02 and a smaller diameter with 19 splnes in '92-'93.
This trans is usually found in 3/4 ton V-8 Applications, but was behind V-6 1/2 tons in '92-'93.
The input would need changed to the diesel 1-1/4" X 10 spline version.
It wouldn't be the ideal choice to pull sleds with.

On the input on your broken tranny, you don't have to completely dis-assemble the trans to change the input.
It comes out after you remove the bearing retainer, just twist it around a bit, while pulling, and it's out.

Mark.
 

Last edited by Mark Nixon; Sep 14, 2010 at 11:32 AM. Reason: Gas 4500 spline counts and APPs. added.
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