1st Gen. Ram - All Topics Discussion for all Dodge Rams prior to 1994. This includes engine, drivetrain and non-drivetrain discussions. Anything prior to 1994 should go in here.

93 518 auto to 94 47RH swap

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Old Apr 28, 2006 | 01:58 AM
  #16  
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From: Colorado
Im a bit surprised that there arnt more people that have done this swap.
There are many that have done the gear box updates.
Im interested in hearing more about the actual swap on a first gen from a 518 to a second gen 12 valve trans.
Keep talking guys.
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Old Apr 28, 2006 | 08:05 AM
  #17  
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Well guys, I picked up the 47RH from the 95 Dodge V-10 yesterday. It looks good on the outside as far as clean, but it doesn't look like it has been cleaned up.(If you know what I mean). The torque convertor is there, but of course it won't work with the diesel, and I have ordered the governor weight kit to replace the gas weights. I am going to have the transmission shop look in it to check it out and they said the best thing to do while it was out and they were checking it is to update the valve body. The guy at the trans shop says these transmissions when updated and beefed up with a good torque convertor are very stout transmissions and hold up very well to pulling heavy loads.

Now I need to go over the things I need to change and do to make the swap, and I hope if I have missed anything below you guys will remind me. I am gathering up all of the things I will need and I don' t want to tear the truck down until I have EVERYTHING I need.

Things needed to swap a 93 518 to a 95 47RH from a V-10 truck:

1) Diesel torque convertor
2) Governor weight kit for diesel
3) Starter for a 94-newer diesel truck
4) 2nd gen flexplate
5) Modify the crossmember as needed
6) Shorten driveshaft as needed
7) Seperate switch to control lockup

Have I overlooked anything???

Thanks guys,
Scott
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Old Apr 28, 2006 | 08:16 AM
  #18  
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From: Raleigh, NC
Originally Posted by scottmn1
Thanks JD,
I found Dave Goerend's website and read about his business. It really sounds like he knows what he's doing. What did that convertor cost that you bought from him if you don't mind me asking?

Dave is fantastic, very busy but his customer service is UNMATCHED by anyone!!
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Old Apr 28, 2006 | 08:26 AM
  #19  
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Originally Posted by scottmn1

1) Diesel torque convertor
2) Governor weight kit for diesel
3) Starter for a 94-newer diesel truck
4) 2nd gen flexplate
5) Modify the crossmember as needed
6) Shorten driveshaft as needed
7) Seperate switch to control lockup

Have I overlooked anything???

Thanks guys,
Scott
I think your going to need the engine adapter plate from a 2nd gen. I believe that the bellhousing bolt pattern is different. I know that the getrag bellhousing and the nv4500 bell housing pattern is different so i'm guessing that they changed the autos also.
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Old Apr 28, 2006 | 10:05 AM
  #20  
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From: Belvidere, NJ
Originally Posted by apwatson50
I think your going to need the engine adapter plate from a 2nd gen. I believe that the bellhousing bolt pattern is different. I know that the getrag bellhousing and the nv4500 bell housing pattern is different so i'm guessing that they changed the autos also.
Yup A518 belling housing adaptor is an 1" thinner than one for a 47RH, bolt pattern is the same though. This is why you need the newer starter, bolt patteren for the starter was changed slightly, also you may want to bend the frame up a bit where the starter gets close to it because it might touch when it torques up.

Correct getrag and nv4500 bellhousing patterns are different, but I believe that 47RH/RE and NV4500/5600 bellhousing adaptors that bolt to the engine are the same. (someone please correct me if I'm wrong)
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Old Apr 28, 2006 | 11:45 AM
  #21  
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From: Cape Girardeau, Missouri
I may be wrong here, but I think the adapters are only used on the manual transmission trucks. I know the adapter is different betwen the getrag and the NV, but if I remember correctly I thought my 518 trans case bolted directly to the engine block. I believe the additional inch needed you guys are talking about for the thicker torque convertor is made into the 47RH transmission case and bolts directly to the engine block also. Again, I am no expert on this, (if I was I wouldn't asking so many darn question), but someone else chime in and give their opinion also.

Thanks
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Old Apr 28, 2006 | 12:05 PM
  #22  
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From: Raleigh, NC
Both the 47RH/RE bolt to an adapter and NOT to the engine block.
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Old Apr 28, 2006 | 12:07 PM
  #23  
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From: Golden, Colorado
I know for a fact that the 518 bolts to an adapter plate which in turn bolts to the block. The adapter is what holds the starter!!
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Old Apr 28, 2006 | 12:22 PM
  #24  
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From: Belvidere, NJ
scottmn1,
The A518 and the 47RH are the same length, in fact externaly there is very little difference, casting dates and there should be reenforcing webbing around the rear servo housing. The adaptor plate is where they added the extra 1", like you said for the converter clutch. That is what you need to aquire for conversion.

The cummins is nice in the fact that it will accept a large array of different size/style bellhousings adaptors, as any good engine that has industrial roots should.
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Old Apr 28, 2006 | 12:43 PM
  #25  
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From: Cape Girardeau, Missouri
OK, you guys have convinced me I was wrong. Thats what I get for relying on my memory from when I bolted that 518 in back over a year ago. I just can't remember that adapter plate being there. DUH.......Anybody have that one inch thicker adapter plate from a 94-95 laying around. Sounds like I'm gonna need it.

Oh, and by the way to each of you, please accept my humblest apologies for second guessing you guys.
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Old Apr 28, 2006 | 01:35 PM
  #26  
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From: Belvidere, NJ
Any of them from a 47RH/RE from 94 to 02 will work. You don't have to limit yourself to just the 94-95 for the adaptor.
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Old Apr 28, 2006 | 03:26 PM
  #27  
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From: Cape Girardeau, Missouri
Yep, Went and looked under the hood of the truck to see for myself. I now see that "about an inch thick" plate between the engine block and the transmission. The oil and grease had the seam between the plate and engine covered up and I just thought it was part of the engine block. There's a good example of the old saying "never assume"........
Thanks JD for the info on 94-03 will work...That will make it easier to find
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