New guy here and have a question about the 4.7 l to a 5.7l - Hemi Truck Club
 
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Old 04-18-2017, 08:53 PM   #1
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New guy here and have a question about the 4.7 l to a 5.7l

First off good day to everyone. I'm in a lil bin right now ,I have a 2005 Dodge Ram 1500 with the 4.7l engine, I ran it hot on accident and now the motor isn't no good ... Getting it rebuild will be somewhere round $2500 my mechanic told me I'm like that is a lot for a motor that really don't have a lot of power and that's when I said to myself why not put something stronger in there like a hemi.. My concern is what all will I need to make this a dream come through other then the ecu, wire harness, a/c and alternator I don't know what else will it need .. I've been told I will need radiator, driveshaft and transmission is different so will someone that has this knowledge please help me or point me to the right direction and yes I looked before I searched couldn't find anything. Also I wanted to know which year hemi to buy a 2003, 2004, 2005, or and 2006 I understand that they are all different as well so please help the new guy here and I'm sorry for asking this again that's been asked a million times.. god bless

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Old 04-18-2017, 10:33 PM   #2
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Welcome to the forum. Are you a mechanic or will you pay someone to do the work? I ask because although this is a easy swap, it becomes impractical IMO to pay someone to do the swap. The trans is the same and the converter can be used. The engine will bolt in without a problem. New exhaust will need to be installed for the 5.7. Radiator/Shroud will need to be 5.7. I would be surprised if the alternator and ac pump are different. I don't have the pinouts memorized but I think a 05 5.7 pcm will plug in and only the engine top harness (5.7) needs to be installed. The problem is if there are any issues you will have to troubleshoot your way through it. Paying someone's labor to do this could be very expensive. Another potential issue is, do you have skim? I am not sure you can plug in the new pcm and have them play nice. Any 03-06 engine can be used without worrying about the tone wheel. (32 tooth). The newer engines have different tone rings, mds and possibly vvt. These engines would be much more difficult to use. Hope it works out for you...
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Old 04-19-2017, 12:27 AM   #3
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No I am not a mechanic **** I wish I was I'm more then likely have to pay someone to put this motor in so that is a basically what I'll need then no tranny no engine mount etc etc
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Old 04-19-2017, 01:08 AM   #4
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I don't know what 4.7 frame mount perch looks like. But wouldn't be surprised if they use the same frame perch. The transmissions are the same, 545rfe.. a good mechanic I would guess can install a 5.7 in 8 hours. I recently dropped one in and I spent three days to button it up. Shop rate goes anywhere from $65- $185+ an hour. You do the math. Taking it to a top speed shop that specializes in modified vehicles I suspect it would cost in the neighborhood of $16,000- $20,000+ for a turn key. That would include $10,000 - $15,000 for motor. Figure another $5,000- $8,000 for a built trans. This would be on top of the engine install. I would say your cheapest route that guarantees success is to trade it in on a good running truck.
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1# 2017 HTC FASTEST HEMI List....
Current 1/4 mile [email protected] (2018)
Current 60' PB 1.351 (2019) mechanical issue for 1/4m

HTC 2018 TOTY

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Old 04-19-2017, 03:04 AM   #5
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Quote:
Originally Posted by Redtruck-VA View Post
I don't know what 4.7 frame mount perch looks like. But wouldn't be surprised if they use the same frame perch. The transmissions are the same, 545rfe.. a good mechanic I would guess can install a 5.7 in 8 hours. I recently dropped one in and I spent three days to button it up. Shop rate goes anywhere from $65- $185+ an hour. You do the math. Taking it to a top speed shop that specializes in modified vehicles I suspect it would cost in the neighborhood of $16,000- $20,000+ for a turn key. That would include $10,000 - $15,000 for motor. Figure another $5,000- $8,000 for a built trans. This would be on top of the engine install. I would say your cheapest route that guarantees success is to trade it in on a good running truck.
I agree, but trading it in might be hard. You're in a tough spot. Spending that kind of money on it doesn't make sense unless the rest of the truck is pristine. Good luck! Welcome to the Hemi family!
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Old 04-19-2017, 05:56 AM   #6
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Old 04-19-2017, 08:14 AM   #7
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Originally Posted by BIG RED HEMI MN View Post
I agree, but trading it in might be hard. You're in a tough spot. Spending that kind of money on it doesn't make sense unless the rest of the truck is pristine. Good luck! Welcome to the Hemi family!
Not being a mechanic is the problem unless he can make it a project car and work /learn as he does the work. There is plenty of help here that can talk him through it.
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1# 2017 HTC FASTEST HEMI List....
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Current 60' PB 1.351 (2019) mechanical issue for 1/4m

HTC 2018 TOTY

Support vehicle- 2007 QC G56 4x4 diesel
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Old 04-19-2017, 08:40 AM   #8
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Old 04-19-2017, 01:42 PM   #9
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Old 04-19-2017, 10:47 PM   #10
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So ok if I decide to attempt to do it myself as a project is there anything else I should be aware of part wise other then what you guys told me... I might except this challenge and try to do it myself
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