12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

NV4500 vs 47RE vs G56 vs NV5600

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Old Aug 30, 2011 | 08:19 PM
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Default NV4500 vs 47RE vs G56 vs NV5600

confused on that tranny to get, i like stick shifts, but im looking for reliability, i dont tow heavy, maybe 7-8k

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alright went looking around and i think i might go with the NV4500, i plan on dd with it, sometimes go 4 wheeling, pull only a little amount of weight and the power i plan for the truck is maybe 500hp. is my head on right or should i reconsider. ill get the bigger input shaft and the 5th gear nut fix.
 

Last edited by alexbland; Aug 30, 2011 at 08:19 PM. Reason: Automerged Doublepost
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Old Aug 31, 2011 | 09:31 AM
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I take it your swapping an out an auto? And fill out your sig. so we know what ya got. I swapped my 47RH out for a NV4500, the swap is pretty easy, and with the bigger input shaft and 5th nut fix its a great reliable tranny. The shop I got my parts and tranny from said the NV5600 might be able to withstand more torque, but the syncros are not as robust as those found in the NV4500, so it wont take as much abuse. Best of luck!
 
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Old Aug 31, 2011 | 03:15 PM
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i was looking for a nv4500, but for the 5th gear i read the only way to perm fix the problem is get the new mainshaft, but ive seen the new nut im sure i can install that but i would most likly need a shop to put in the mainshaft right?
 
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Old Sep 2, 2011 | 11:26 AM
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go with 5600 6th gear is nice and the g56 will grenade with to much power!
 
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Old Sep 3, 2011 | 07:09 PM
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nv4500 is what you want. The 5600 would be an ideal towing tranny IMHO but for light towing and hotrodding the 4500 is a great tranny, or a built auto. And if you wanna get rid of that auto let me know
 
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Old Sep 3, 2011 | 07:42 PM
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Originally Posted by mx_racer_36
go with 5600 6th gear is nice and the g56 will grenade with to much power!
6th gear nv5600 and 5th in nv4500 are same gear ratio?

Best bet is the 4500 if your limited on cash. My 01 with 47re held 435hp pulling anything I hooked to it but I spent 5g.
 

Last edited by Cutterw; Sep 3, 2011 at 07:45 PM.
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Old Sep 5, 2011 | 02:37 PM
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I believe they are
 
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Old Sep 9, 2011 | 07:38 PM
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nv4500 wanna permantly fix the 5th gear problem get some one to tack it 50k on mine and still rolling with it
 
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Old Sep 9, 2011 | 09:45 PM
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i say nv 5600.... what gear ratio do you have.... (rear end)
 
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Old Sep 9, 2011 | 10:52 PM
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Originally Posted by tonytee71
nv4500 wanna permantly fix the 5th gear problem get some one to tack it 50k on mine and still rolling with it
Wrong, though it is probably the easiest/cheapest/most effective temporary fix it is not a permanant fix. The problem isnt the nut its the spline, you can buy better splines that dont have this malfunction but its more expensive and more involved.
 
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