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4g63t into a Eclipse GS

ttravis88t

Proven Member
107
13
Jul 25, 2021
Jacksonville, Florida
So, I’ve owned a GST for a while now but the body of the car is so bad i simply don’t want to spend the time and money needed to get it into a better shape. But, I have a buddy selling his SUPER clean Eclipse GS for really cheap and it only has like 70k miles, and already has all the cosmetic and interior mods one could ask for, so, getting to the point, I want to swap my motor and trans into this GS, from anyone who has done this swap, how difficult is and is there anything I would need to fab to make it work? Considering I already have everything I need from my GST it should be a simple swap by just pulling everything over from my current car. Anyone have any input? Is there a guide for this swap anywhere on the internet?
 

steve

DSM Wiseman
14,456
1,391
Feb 3, 2002
St. Charles, Illinois
If it's a Spyder GS you might stand a chance swapping the 4G63T doe the 4G64 but if it''s a normal US GS, swapping the 4G63T in to replace a 420A is a serious challenge. The only one I've seen that was successful amounted to replacing the front clip.
 

lasershark

Proven Member
1,604
231
May 17, 2013
over yander, Idaho
It will be a project as the gs likely has the 420a motor, motor mounts are different and such. So it will take some fabbing. I'm not too familiar on which NA yrs and models came with the mitsu 2.4 motor. If its the 2.4 it will be a simple swap everything over affair...
 

Tyeler18

Proven Member
2,475
203
Dec 16, 2008
Casa Grande, Arizona

ttravis88t

Proven Member
107
13
Jul 25, 2021
Jacksonville, Florida
If it's a Spyder GS you might stand a chance swapping the 4G63T doe the 4G64 but if it''s a normal US GS, swapping the 4G63T in to replace a 420A is a serious challenge. The only one I've seen that was successful amounted to replacing the front clip.
Yeah sorry for not being specific. It is a U.S. GS coupe (not a spyder) with the 420a
 
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