2004 Shorty 5.7 Swap

7178 Views 24 Replies 6 Participants Last post by 04HemiTJ, Jan 20, 2020

Lil'Hemi

Discussion Starter · Dec 2, 2015

Well, First of all, great forum! I have got more out of these threads in the last half hour that all my crazy Google searches the past 6 months. Good info guys.:wink:

So I'm on my second Hemi swap, the last one was a first gen and turned out sweet, but after almost sliding her through a county fence, I decided to sell her while we were both still alive. So it's been almost ten years and I miss the little truck, sooo here we go again:stirthepo

Here's what I have so far:

'03 5.7 ram motor with a new bottom end and a valve job up top
'04 Shortbox with a 3.7 and a NV3500 (going manual this time)

So now here is the question of the day. I read on another thread an A/T NGC can be flashed to run the stick. I just wanted to verify this before I continue to scour the web for a R2500 M/T NGC. Does anyone out there have first hand experience with this and who flashed it?

Thanks again for the site!

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turbojoe62

· #8 · Dec 4, 2015

Lil'Hemi said:
The only other grey spot in this thing is I want to put a R2500 clutch and flywheel in place of the 3.7/4.7 unit but info is sketchy there as well. Everyone runs the 545 with the swaps so the stick stuff is tough to find straight answers on.

Here's 2 threads that might help you out between the 2. They are not exactly what you are doing but still might give you what you are looking for:
http://www.dakota-durango.com/forum/showthread.php?t=153267

http://www.dakota-durango.com/forum/showthread.php?t=157355

Good luck with the build!!
I would be interested in what you come up with for exhaust from heads down.

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turbojoe62

· #11 · Dec 5, 2015

Lil'Hemi said:
Thanks for the links, lots of good info. Your truck turned out nice! I'm guessing the hemi flywheel you used was from a car 5.7? I'd love a tremec, maybe after I fry the 3500 I'll go that route. I've read truck manifolds fit so I'll start with those then I've got a bender so I'll be runnin my own pipes with something Magnaflow out back. Haven't looked under there for clearance yet.
Here's some pics of the 93 I did.

I am not sure if there is a difference between car and truck 5.7 flywheels but pretty sure mine is for car version if they are different. Here is the info on the one I am running:
FWCH-10013, SCIENCE FRICTION Billet Steel Flywheel, SFI Quality,
130t/10.5" for 5.7/6.1 Hemi, 8-bolt (weighed 26lbs).
I got it from American Power Train. I had MAJOR problems with their (Science Friction) PP. Ended up going with Center Force Dual Friction clutch/PP. Have many runs at track with slicks and 4k+ dumps with 0 clutch/flywheel problems.
Thanks for the kind words about the truck. It is a blast to drive

Nice job on the hemi transplant. Looks like you did a really good job!!
Now...just get then new one done ;-)
Keep us posted.

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turbojoe62

· #13 · Dec 5, 2015

If you decide to go with trans let me know, could save you between $1-2k and a lot of headeaches. I would have bought the trans outright and then sourced the parts myself. Both the flywheel and bellhousing I used on mine was "for" a 5.7. If I remember correctly the bell for 5.7 had starter on passenger side. Since 4.7 starter is on Driver side and I didn't feel like swapping all of the wiring around I ordered the 5.7 bell with starter on Driver side.
Which ever way you go you will have a blast when done!

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