Hemi Swap Complete - 2002 4.7 to 2003 5.7
#21
wow t-muns. kudos to you on your project! that is awesome to take on by yourself (and with the help from some friends). ever since i spoke to hammer about the differences between the 4.7 and hemi, i have been wondering about a swap. i hope you are enjoying the new truck. and to hemi quad, sorry to hear that. i know how it feels. i got hit head on by a dui last august in my 01 ram after doing the hughes and kegger, etc. hopefully your next project turns out even better..
back to the 4.7, i just feel like this engine will set me back with mods compared to the 5.7. obviously not as much power, but even with simple things like gears and larger tires, the 4.7 i don't think can really handle a lot of mods...
back to the 4.7, i just feel like this engine will set me back with mods compared to the 5.7. obviously not as much power, but even with simple things like gears and larger tires, the 4.7 i don't think can really handle a lot of mods...
#22
Thanks man, it was pretty fun. As far as your 4.7, I'm sure it can handle plenty of mods. It just comes down to what you're looking for, how much money you have, and how comfortable you are doing your own work.
I did the upgrade because my 4.7 blew up and 2002 replacements were expensive. I could only find higher mileage 4.7s for a 2002 and I wasn't going to spend a fortune on a jasper or crate 4.7. I figured I might as well start with the extra horsepower, then I can put money into modding the hemi. I'm happy with my decision.
You could always spend some dough and supercharge your 4.7. Or look around on various CL sites and find a super cheap hemi that needs a head or something like that. You can pick it up cheap, put a little money into upgrading it while it's out, then swap it in. Unless you can find a super cheap hemi, it's hard to say if it's actually worth it if your current 4.7 is in good shape. My 4.7 was shot so it was an easy decision.
It also depends on what the emission laws are in your state, etc.
I did the upgrade because my 4.7 blew up and 2002 replacements were expensive. I could only find higher mileage 4.7s for a 2002 and I wasn't going to spend a fortune on a jasper or crate 4.7. I figured I might as well start with the extra horsepower, then I can put money into modding the hemi. I'm happy with my decision.
You could always spend some dough and supercharge your 4.7. Or look around on various CL sites and find a super cheap hemi that needs a head or something like that. You can pick it up cheap, put a little money into upgrading it while it's out, then swap it in. Unless you can find a super cheap hemi, it's hard to say if it's actually worth it if your current 4.7 is in good shape. My 4.7 was shot so it was an easy decision.
It also depends on what the emission laws are in your state, etc.
#23
#25
I'm swapping from a 2003 Hemi 5.7 to a 97 dodge Ram. I have a thread going in the Gen 2 section. Just can figure out the rear tail lights. I have two wires coming from the front one for left and one for right but my tail lights are totally different. Just was wondering if you had a diagram of how you hooked yours up.
#26
I checked out your thread and you have quite a project there, great job! I'm not familiar with the 2nd gen wiring at all, but if you have the service manual for the 2003, you should be able to figure it out. The "Rear Lighting" section (page 1008 of pdf version) shows how the lights themselves are wired up, but the brake switch/cruise/PDC/PCM wiring is throughout the wiring section.
I would imagine you have the manual, but if not check it out here:
https://dodgeforum.com/forum/3rd-gen...-download.html
The existing brake/tail light wiring from my 02 was exactly the same as the 03 hemi with exception of the cruise control setup so I didn't have to touch any wires going back to the lights. Are you using a brake light switch for the 03 hemi or are you trying to use your old one?
I would imagine you have the manual, but if not check it out here:
https://dodgeforum.com/forum/3rd-gen...-download.html
The existing brake/tail light wiring from my 02 was exactly the same as the 03 hemi with exception of the cruise control setup so I didn't have to touch any wires going back to the lights. Are you using a brake light switch for the 03 hemi or are you trying to use your old one?
#27
Yeah the brake light switch is from the hemi everything is with the exception of interior and exterior lights. And the power doors windows and mirrors. Otherwise all hemi. I don't have the service manual. Just two Haynes manuals that show I very basic wiring diagram. I have the parking lights and the turn signal figured just not the stop light. Thanks for the link.
#28
I hope you enjoy the pride of you're accomplishment as much as I did..Neither insurance companies are going to pay for my truck,or bikes..I didn't have enough insurance and the police officer couldn't say for sure it was her fault..So I'm screwed..
Meanwhile I'm searching for something else to put my Hemi in. I have that Italian sounding disease FUNDS-SA-LOW. I have to look at this truck every time I walk out side, It makes me sick.
I hope you get as much enjoyment out of yours as I did mine , "Only Longer"..
" Good Job", I hope something I posted helped , or saved time money, or something..
Meanwhile I'm searching for something else to put my Hemi in. I have that Italian sounding disease FUNDS-SA-LOW. I have to look at this truck every time I walk out side, It makes me sick.
I hope you get as much enjoyment out of yours as I did mine , "Only Longer"..
" Good Job", I hope something I posted helped , or saved time money, or something..
Last edited by HemiDak-Quad; 02-03-2012 at 06:27 PM.
#29