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4.7 To 5.7 Hemi Conversion?

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Old 08-10-2015, 05:23 PM
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4.7 To 5.7 Hemi Conversion?

  #21  
Old 04-26-2012, 07:58 PM
jayyonick
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hey guys trying to do a engine swap on 2002 dodge ram 1500 quadcab automatic 4x4 need some options having troubles with motor head gaskets twice which motor will be best to install im thinking 5.7 l hemi
 
  #22  
Old 04-26-2012, 08:20 PM
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I don't think the hemi will match up w/ the tranny you have let alone the electronics.
The Hemi didn't appear until 2003 so a 5.9/360ci would be the cheapest and easiest choice I would think.
 
  #23  
Old 04-27-2012, 09:28 AM
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I put a 04' Hemi in my 02' Ram.. I Love it .. The 4.7 and 5.7 Hemi Transmissions have the same bolt pattern , so a Hemi would bolt to you're trannsmission.. 318-360 , motors won't bolt to you're trans..
You need a 03' to 06' Hemi and 04' complete wiring harness .. It will plug into the white plug under you're dash.. Look Up My thread " 2002 Ram get HemiDak-Quads Hemi"..
It will show you what to do.. I'll help you if you need it ...
 
  #24  
Old 04-27-2012, 11:29 AM
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Originally Posted by MoparPaul View Post
I don't think the hemi will match up w/ the tranny you have let alone the electronics.
The Hemi didn't appear until 2003 so a 5.9/360ci would be the cheapest and easiest choice I would think.

Simply based on the fact that the 4.7 and Hemi share the same transmission, a Hemi swap would be a good bit easier than a 5.9 swap...
 
  #25  
Old 04-27-2012, 12:28 PM
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Originally Posted by jayyonick View Post
hey guys trying to do a engine swap on 2002 dodge ram 1500 quadcab automatic 4x4 need some options having troubles with motor head gaskets twice which motor will be best to install im thinking 5.7 l
hemi
Is this all one sentence?

I wasn't sure bout the compatability but now I know. Thanx guys.

What's the difference mechanically / electrically between 04-06 Hemi's to the
07-08's besides availability?
 
  #26  
Old 04-27-2012, 12:35 PM
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Originally Posted by MoparPaul View Post
What's the difference mechanically / electrically between 04-06 Hemi's to the 07-08's besides availability?
03-05 hemi's are non-MDS and use PCI bus communications. In 2006 they changed to CAN bus communications and added MDS in the engine
 
  #27  
Old 04-27-2012, 01:58 PM
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I would look for a 2005 low mileage Motor and transmission .. You can get better tuning programs and chips for 05'~ with no MSD ..
You will have to cut off you're motor mount perches and weld them back in . That's not hard to do .. I don't know exactly how to do a 4x4 , mines 2x2 , but there are people here that have done that swap that can help.. I'd do it .. 4.7's Suck and I don't think it would cost any more to swap in a Hemi instead of a 4.7 , if you can find one reasonably priced..
 
  #28  
Old 06-09-2012, 03:34 PM
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Default 2002 ram 1500 4.7 to 5.9 conversion

Hi, I'm new to this site so if I violate any protocols, please bear with me. I have just bought a 2002 1500 with a blown 4.7 and would like to find out what is involved to convert to a 5.9. I have searched the site but couldn't find any recient, detailed info. Any info would be much appreciated. Thanks.
 
  #29  
Old 06-09-2012, 08:31 PM
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jdanbris you don't want to convert to a 5.9. You'll want to convert to a 5.7 or another 4.7 since both have better MPGs than the 5.9
 
  #30  
Old 06-10-2012, 10:10 AM
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Originally Posted by 08HEMI1500 View Post
jdanbris you don't want to convert to a 5.9. You'll want to convert to a 5.7 or another 4.7 since both have better MPGs than the 5.9
Negative sir, If you have a 4.7L Auto trans, then you'll want to swap to a 5.7L as they share the same transmissions.
 

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