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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 01-24-2011, 07:07 PM
cory323 cory323 is offline
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Default 4.7 engine swap?

Has anyone swapped to the hemi? I have a 2003 dodge ram 4 door and was wondering if any one has experience with a hemi swap if so how complicated is it with ecu and all that. also what year hemis will fit?
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Old 01-25-2011, 09:49 AM
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It should be a fairly simple swap involving the engine, PCM, wiring and related mounting hardware for the engine itself. Your trans will bolt right up. I woul recommend using a 2003-2005 engine unless you're looking to add MDS.
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Old 02-24-2011, 10:42 PM
Uiwlocal263 Uiwlocal263 is offline
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I checked into swapping my 4.7 to a hemi in my 02 quad cab and from my info gathering was told I would have have new comp. Wiring harness and was also told by mech. Tranny for a 6 cyl. And 4.7 would interchange but not with the hemi. So I would need tranny also. Again I'm not a mechanic but u should check it all out before u start spending. Good look.
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Old 04-01-2011, 10:13 AM
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from what i have heard when i wanted to do this swap u basicly have to have a totalled Hemi truck. everything out of it including the ignition and key bc the computer aparently will not allow the engine to start with another ignition or something. IDK if u find out diff tho im for sure goin back to this idea cuz i know places i can get a full hemi engine n harness for $2000
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Old 04-01-2011, 12:56 PM
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engine, engine harness, dash harness ,compute and throttle position censor. was going to do this in my 02 but had to chop the oil pan. i dont think you have to in a 03. but mine is 4x4
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Old 04-01-2011, 01:26 PM
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I was entertaining the idea of a hemi swap into my 05 seeing that I broke a rod and the engine shop I always deal w/ said it would work if I wanted but I don't wanna pay the extra 500~ for not returning a hemi core
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Old 04-02-2011, 04:04 PM
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well learn somethin new everyday. looks like my hemi dreams arent over with yet
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Old 04-02-2011, 04:43 PM
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Quote:
Originally Posted by Ramit06 View Post
well learn somethin new everyday. looks like my hemi dreams arent over with yet
Nope but I never wanna go through a engine saw again lol. I wanna build mine for a woods truck and get a hemi 2x4 daily driver
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Old 04-04-2011, 02:48 PM
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see mine is 2 wheel drive n i like the idea of a muscle truck more. i wanna put a stroked 392 or the big dawg... 426 stroker. but i also want to twin turbo it or supercharge it... big dreams lol
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Old 04-05-2011, 10:49 PM
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Originally Posted by Ramit06 View Post
see mine is 2 wheel drive n i like the idea of a muscle truck more. i wanna put a stroked 392 or the big dawg... 426 stroker. but i also want to twin turbo it or supercharge it... big dreams lol
we all have big dreams and I agree w/ you if I had 2wd Id def be building more towards a muscle truck than anything else
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