Transmission Swap

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Tom991

Junior Member
Joined
Sep 8, 2013
Posts
2
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Location
Seoul Korea My truck lives in Vero Beach, Fl. I go
Ram Year
2003
Engine
Hemi 5.7
Hi, I'm new to the Forum. I've had a 2003 Ram 1500 Quad Cab 5.7L Hemi for about 4 years now. My wife loves the truck. I chose it over a Ford 150 since the interior was nicer. I like the truck too.

My question is, is it possible to swap the 5 speed Auto for a 6 speed auto. A friend is parting out a 2007 (I think) 1500 Hemi with a six speed auto and it would give me better mileage on the highway if I were able to make the swap. I used to swap engines and trannys on older cars back in the day. I'm just wondering if there is something more like changing a chip in the ECU.

Thanks

Tom
 
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Tom991

Tom991

Junior Member
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Sep 8, 2013
Posts
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Location
Seoul Korea My truck lives in Vero Beach, Fl. I go
Ram Year
2003
Engine
Hemi 5.7
Same auto transmission on the 07 as the 03


Sent from my SCH-I605 using Tapatalk 2

I may have gotten the vehicle year wrong but my friends totaled truck is a 1500 with a 5.7L Hemi with a six speed auto tranny. I would like to swap it into my 2003 Ram 1500 w/ 5.7L Hemi with a 5 spped auto.
 

Redtruck-VA

Senior Member
Joined
Jun 29, 2010
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Location
Virginia
Ram Year
2003 & 1989 D250 RWD
Engine
Hemi-5.7, 5.9 12v & 24v diesel
Tom, welcome to the forum. Always glad to see another 03 join the ranks. There is much that needs to be learned about our trucks as we look into modifying them. Good luck...
 

TylerB

Senior Member
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Mar 7, 2012
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1,711
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Location
FL
Ram Year
2011
Engine
5.7
I may have gotten the vehicle year wrong but my friends totaled truck is a 1500 with a 5.7L Hemi with a six speed auto tranny. I would like to swap it into my 2003 Ram 1500 w/ 5.7L Hemi with a 5 spped auto.

It's the same transmission....
 

HemiLonestar

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Military
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Jun 1, 2012
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Location
MD
Ram Year
2016
Engine
5.7 hemi
It's the same transmission but you don't have the right programming to take advantage of it. Your TCM will try to treat it like a 545.
 
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