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Pontiac Repair/1998 Sunfire engine swap


I have a 1998 Pontiac sun-fire with a 2.2 4 cylinder 5 speed.
I plan to have a 3800 V6 out of a 1994 Buick Le Sebre Custom put in.
I'm also planning on taking the computer with the engine, my question is what kind of problems will i run into? I Plan on fixing the mounts already but any tips on that would be great thanks

Hi Morgan:

I have bad news for you That engine will not fit in a sunfire. Now way shape or form. That car was never designed for a V6 engine to fit under the hood let alone a BIG v6 engine like a 3800. The older sunbirds had a V6 that would fit but not in a sunfire. If you have seen one there were MAJOR modification made to the unibody to get it to fit under the hood. That is way too small and car for that engine to fit. Sorry to give you the bad news. The biggest engine you will see in one of those is a Quad 4 cylinder engine. those were in the GT version of that car.

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Todd Puccio


General auto repair,electrical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm specific. I have worked at my current dealership since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way. If your happy with the answer I gave you please feel free to Donate. This is a free service to you and I am not compensated at all by this web site. I have 22 years of experience to share with you and my knowledge wasn't free to me. I had to pay for my education.


Experience in the area: I have been a technician in GM dealerships for over 22 years and I am a ASE master technician. I work at a Buick and GMC truck store Previously I worked at a Pontiac GMC store for 18 years. I Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franchise was purchased by this dealership. Organizations: ASE master technician


Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied sciences (auto technology)Awards and Honors: GMC master technician

Awards and Honors
Master GMC truck technician Master ASE technician in 9 categories

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