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Shoe
GenIII
 
5/30/2007
17:45:39
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 Subject: 3.9 to 4.7 Swap.
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Well, I found me a heck of a deal that I could not refuse. I found me a wrecked 2000 Dakota. 4.7 automatic, fully loaded, 9.25 rear-end. I purchased the truck for only $1200 dollars. Do you think that I go hurt? The motor runs fine. The transmission shifts fine. The body is shot. The interior is in great shape. I will for sure convert all of my manual things to power. Next question, are all of the input shafts for the manual transmissions the same between the V8s. I do not want the automatic. I will sell it and anything extra and put a 5-speed behind it. I just want to know if the 5-speed are all the same. Thanks.
'97 RC V6, 5spd, soon to be V8, 5spd!
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Shoe
GenIII
5/30/2007
18:04:15
|  RE: 3.9 to 4.7 Swap.
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Oh, the truck only has 60K miles on it. I do not that it was a bad deal.
'97 RC V6, 5spd, soon to be V8, 5spd!
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N56629
Dodge Dakota
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5/30/2007
19:18:40
| RE: 3.9 to 4.7 Swap.
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The project will take lots of time and lots of money. I'm almost certain no one here has gone to all the trouble or expence.
I would be looking for a cheap 2000 Dakota that "needs" a new engine and tranny.
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Shoe
GenIII
5/30/2007
19:49:01
| RE: 3.9 to 4.7 Swap.
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I have all of the equipment. It should not be that much. The transmission will be the only thing that will cost a lot of money.
'97 RC V6, 5spd, soon to be V8, 5spd!
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Shoe
GenIII
5/30/2007
19:54:18
| RE: 3.9 to 4.7 Swap.
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All that DodgeParts.com says is that it is a New Venture Gear 3500. Which is the same as the 5.2s. I just wish that somebody could tell me if the input shafts are any different. I can buy remanufacted NV3500s for about $1000.
'97 RC V6, 5spd, soon to be V8, 5spd!
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daddio
Dodge Dakota
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5/30/2007
21:12:08
| RE: 3.9 to 4.7 Swap.
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the crank on your auto 4.7 may not be machined for the pilot bearing/bushing required for the manual trans. also need a flywheel and probably a trans as well. you may have the ax-15 and i don't think you want that trans behind a 4.7
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jayb
Dodge Dakota
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5/30/2007
21:50:54
| RE: 3.9 to 4.7 Swap.
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if for some crazy reason i were to do this job, i would go with the automatic. your gonna have to rewire your whole truck with the wireing from the 4.7 truck. thats the biggest b!tch. dropping it in after that is easy. if the wrecked truck still runs and drives how bad could it be? why not fix it?
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Shoe
GenIII
5/30/2007
21:56:29
| RE: 3.9 to 4.7 Swap.
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I called Orielly's to get a price check on some things. They said that the crank sensor did not call for either a manual or automatic. They did not list a flywheel. I will probably see if I can find a good one out of a wrecked truck. Motor mounts are outrageous (left-$141; right-$181). The starter is $109.99. I do not believe that all of the trucks wiring will be different. Just possibly the engine wiring harness. I have never been an automatic kindof person. I have never heard anything good out of automatic transmissions. Stock ones that is. If I can somebody to rebuild it with a shift kit cheaper I would not mind.
'97 RC V6, 5spd, soon to be V8, 5spd!
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Shoe
GenIII
5/30/2007
22:09:07
| RE: 3.9 to 4.7 Swap.
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"if the wrecked truck still runs and drives how bad could it be? why not fix it?"
I will post pictures of this thing. It is totalled. You should see the passenger side frame.
'97 RC V6, 5spd, soon to be V8, 5spd!
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Shoe
GenIII
5/30/2007
22:17:51
| RE: 3.9 to 4.7 Swap.
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I found a shift kit for it. Around $50 bucks. Can anybody give me an estimate on about how much a rebuild would cost. If it is not much over $1000 I will just keep the automatic. If it is close to $2000 I will tell them where to go.
'97 RC V6, 5spd, soon to be V8, 5spd!
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daddio
Dodge Dakota
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5/31/2007
08:49:45
| RE: 3.9 to 4.7 Swap.
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most of the guys on here with the 4.7/ 45rfe or 545rfe tranny really like it. you need to talk to Graphite about his. i think that '00 you have is a 45RFE. Kowalski has one as his is an '00 i believe. i myself am partial to manual trans. it's what i learned on and 99% of the vehicles i've owned were manuals.
another thing to consider. i believe the '00's used a TCM to control the tranny in conjunction with the PCM. that may be another hurdle for you.
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Shoe
GenIII
5/31/2007
17:42:14
| RE: 3.9 to 4.7 Swap.
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Well, I got a price quote for the rebuild of the automatic with a shift kit. $1100. I do not think that is bad. I will probably keep the automatic then since I have everything.
'97 RC V6, 5spd, soon to be V8, 5spd!
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Kowalski
GenIII
5/31/2007
18:26:49
|  RE: 3.9 to 4.7 Swap.
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Yup, I've been pleased with the 45RFE in my '00. It's held up well to plowing and towing, and never given me a bit of trouble. Not sure, but I don't think they separated the TCM from the PCM until a later year. Shoe - I agree with you on the wiring. One thing though - while I had no problem running my truck on a boneyard PCM while having mine custom flashed, those with other engines have reported a problem unless the correct vin is flashed into it. I'll bet that problem might be compatabilty with a central timing module and or a body control module - maybe swap that too ? Sounds like a nice upgrade for the $$$ !
Lead, follow, or get out of the way
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Shoe
GenIII
5/31/2007
18:30:11
| RE: 3.9 to 4.7 Swap.
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I am swapping out everything. The whole body wiring harness, dash, and engine. I think that it will work out fine.
'97 RC V6, 5spd, soon to be V8, 5spd!
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Massey
Dodge Dakota
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5/31/2007
19:33:16
| RE: 3.9 to 4.7 Swap.
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Well I cant say I have done this swap in a Dakota but I have done stuff like this in other cars and trucks in the past. The best advise I could give you is take EVERYTHING from the wrecked truck and put it into the good truck. I dont know if the '00 used 2 computers TCM/PCM but I know that my '04 only has one PCM in it and it runs both the engine and tranny. You may have to swap a few other things over as well. The fuel tank may be different, the fuel pump may also be different. Also where the fuel lines come up to the engine could be different.
On a side note about the tranny. I have not heard too much bad about the newer trannys from Dodge. I have the 5speed auto (cant remember the series #) it has run my truck for 62K miles so far with no problems and I also towed a U-haul 4K miles in 5 days with no problem as well (I love cross country trips down I-40 CA-NC). Auto trannys today are not the slushboxes that they once were. Know that you can drive one with confidence. Oh yea and make sure that you dont just add the shift kit with out building the rest of the tranny (clutchs and bands suitable for the new torque). The computer may also need to be reprogramed to accept the new characteristics of the tranny.
Just some food for thought
Massey
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Shoe
GenIII
5/31/2007
19:55:56
| RE: 3.9 to 4.7 Swap.
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I think that the only thing that I will need is the fuel rails. Possibly. I will just have to wait and see. Yes, this one has both the TCM and the PCM. Everything is intact and I will use just about everything. I wish that I could have bought it before it got wrecked.
'97 RC V6, 5spd, soon to be V8, 5spd!
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GraphiteDak
GenIII
5/31/2007
23:06:49
| RE: 3.9 to 4.7 Swap.
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I am pretty sure that since it's a 2000 4.7 you could throw the MANUL 3500 tranny behind it and leave the TCM completely off of the PCM. I believe the only thing communicating between the PCM and the TCM was OD switching and Torque Management Request which was somehting people disconnected anyway!
Remember I was really close to dropping a 2000 4.7 into a Dodge Duster. The NV3500 came from a 3.9 V6 and several sources said the tranny mated to the 4.7 as well. just need the flywheel.
I'd have to admit. If I had a 2WD, I would have swapped my NV3500 into my Dak. Instead I had to sell it when I gave up on the Duster project. (Too much time and space to finish).
On the PCM wiring harness I am thinking you just need to get the power wires and fuel pump relay wires, etc correct and it will start and run as lonmg as you lay the 4.7 wiring harness on the 4.7 engine to the 4.7 PCM. After that you need to play around with the gauges, etc to get them to work. They may work once you figure out the data wires and splice them, etc.
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Shoe
GenIII
5/31/2007
23:53:55
| RE: 3.9 to 4.7 Swap.
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Oh, I am taking all the wiring and using it on my truck. I am going to use the gauge cluster off of that truck because it only says 60,000 miles where as mine says 130,000. Hehehehe.
'97 RC V6, 5spd, soon to be V8, 5spd!
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Kowalski
GenIII
6/01/2007
06:38:29
| RE: 3.9 to 4.7 Swap.
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Looks like my bad on the separate TCM; I guess it was in later years that they combined them. No bands to worry about beefing up in the 45RFE though - this tranny uses a plantary gear system that doesn't need bands.
Lead, follow, or get out of the way
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Shoe
GenIII
6/01/2007
15:54:07
| RE: 3.9 to 4.7 Swap.
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So, would the shift kit even be worth it? Should I just tune it with the Superchips?
'97 RC V6, 5spd, soon to be V8, 5spd!
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Massey
Dodge Dakota
JOIN HERE
6/01/2007
17:25:23
| RE: 3.9 to 4.7 Swap.
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I have not taken this tranny appart but in my experience most all RWD auto trannys have at least one band in them even with the planetary gear assemblies For the record tho since I have not taken one of these newer 5sp autos apart I could be wrong.
Massey
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