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Old June 18th, 2012, 09:11 PM   #1
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Default 2004 Durango 4.7 4x4 Custom Drivetrain

Thinking about putting a GM motor in the Durango I just bought, either a 5.3 or 6.0 and auto trans.

Anyone have any experience with these Durangos?

Will it fit? I expect to make custom motor mounts, but with the radiator and condenser setup is it possible to do without too much headache or should I just get a used motor and put it in? I know they are known for weak connecting rods and bad valve seats. Other than that anything to know about the 4.7?
Should I tear down and attempt a rebuild on the original and upgrade the inferior parts? I think it has a broken rod or three.

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Old June 18th, 2012, 09:11 PM   #2
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Then there is the option of a carbed 360 or 351 or ???????
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Old June 18th, 2012, 09:26 PM   #3
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put a cummins 4bt in it

http://www.4btswaps.com/forum/showth...hlight=durango
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Old June 18th, 2012, 09:31 PM   #4
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That is a different body style but I suppose it is an option, although farther down the list.
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Old June 18th, 2012, 10:00 PM   #5
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with a cutting torch and a big enough hammer anything will fit. i'd say go for it. i think your hardest challenge will be wiring the gm stuff into the dodge body.
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Old June 19th, 2012, 06:49 AM   #6
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Do a Hemi swap. I think it would be easier and cheaper in the long run.
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Old June 19th, 2012, 07:32 AM   #7
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Do a Hemi swap. I think it would be easier and cheaper in the long run.
This.

Seems like it would be a much easier swap. After all they came with a Hemi as well.
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Old June 19th, 2012, 09:10 AM   #8
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Do a Hemi swap. I think it would be easier and cheaper in the long run.
Do you know if it would need all the wiring and computer to be swapped as well?

And bolt up to the stock trans? Or should I try and get a complete takeout?
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Old June 19th, 2012, 09:20 AM   #9
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Good luck integrating anything to the CAN-BUS electrical system.
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Old June 19th, 2012, 09:58 AM   #10
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Good luck integrating anything to the CAN-BUS electrical system.
I have no problem using autometer or something similar for gauges and use as little factory electronics as possible.

I usually stick to working on GM vehicles and know very little about dodge or chrysler vehicles other than collision and suspension type work.
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Old June 19th, 2012, 10:00 AM   #11
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Got a quote for a rebuilt 4.7 for $3100 for an assembled longblock and that includes a core charge if the block is toast. If I can get that down to about $2500 it would prob be my best bet. My neighbor works at the shop and I am hoping to get a discount but he is not there today, hope I see him this evening at home.
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Old June 19th, 2012, 04:58 PM   #12
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Good luck integrating anything to the CAN-BUS electrical system.
This! It is not going to be fun. Good luck!
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Old June 19th, 2012, 07:29 PM   #13
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just swap the stock engine and be done with it.. all the headaches and nickle and dime wont be worth it in the end with the GM swap .
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Old June 19th, 2012, 08:07 PM   #14
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just swap the stock engine and be done with it.
This is what I would do. I wouldn't rebuild or change it. It's just a tacky daily driver. Get a good mileage factory motor with a 90 days parts warranty from a reputable seller that tests their products before shelving them.
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Old June 19th, 2012, 08:22 PM   #15
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This! It is not going to be fun. Good luck!
There's really no need to. If you were going to run the GM motor, you'd just run it stand alone, and make a new dash.

I would just go find a decent longblock on car-part.com and swap it, can't be more than $1000 or so.
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Old June 19th, 2012, 08:23 PM   #16
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The problem is that if you do swap in the GM motor and bastardize it like that, you've killed the resale value of the car, unless you put in a really nice motor, and did an exceptionally clean swap.
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Old June 19th, 2012, 08:32 PM   #17
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Yikes, $3100? They sure aren't giving those things away. Seems worthwhile to look into stock replacement used low mileage first.
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Old June 19th, 2012, 09:04 PM   #18
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pull the old one apart, and see if its fixable first. if not get a used engine for it.
perhaps, even if the block is junk, it has lots of good parts on it. you might find a short block??

no swap though
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Old June 19th, 2012, 09:27 PM   #19
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pull the old one apart, and see if its fixable first. if not get a used engine for it.
perhaps, even if the block is junk, it has lots of good parts on it. you might find a short block??

no swap though
I will see what the problem is exactly but I am pretty sure a rod or three are broken. It will start briefly but is sounds aweful and then stops.

I found a reman for $2200 with a 3 year/100,000 mile warranty, think that will be the route I go. A place called AER, the guy told me that is where chrysler gets their reman from, not sure if it is true or not but the warranty works for me.
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Old June 19th, 2012, 09:28 PM   #20
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Originally Posted by Haggar View Post
There's really no need to. If you were going to run the GM motor, you'd just run it stand alone, and make a new dash.

I would just go find a decent longblock on car-part.com and swap it, can't be more than $1000 or so.
They are $1500+ for ones just shy of 100,000 miles


I missed out on the 2005 with 65000 for $1400
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