Thread: What engine to Swap, 2021

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  1. #1 What engine to Swap, 2021 
    slgreen319
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    Question 04-22-2021
    Hey everyone,
    I just had my N/A 3800 series II engine go out in my 97' grand prix. I was wanting to do an engine swap and it seems like my options are are follows:
    - 3800 N/A
    - 3800 Supercharged
    - LS4
    I was hoping for any opinions to help with my decision making and maybe someone's first had experience.
    I have done work on cars before and am comfortable with turning wrenches. I do want to make some more power out of my car once done but don't want to spend months on the process. Right now I am leaning toward trying to put in a L67.
    Thanks for any help.
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  2. #2 Re: What engine to Swap, 2021 
    Fivefingerdeathpunch
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    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default 04-22-2021
    97's with the NA engine run a vacuum like down to the transmission and those are generally the weakest because it's a 4T60e where as the next year later they are 4T65's. You'd need to swap in a 4T65e-HD transmission if you really want this to work, then run a L67 computer.

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  3. #3 Re: What engine to Swap, 2021 
    slgreen319
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    Default 04-23-2021
    Quote Originally Posted by Fivefingerdeathpunch View Post
    vacuum like down to the transmission
    Wow, yeah, I totally forgot about that vacuum line. Guess I will need a transmission too. Do you know if the boost display in the car will work, or is there something special I have to do to hook that up. Any other comments would be great too.

    Thanks
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  4. #4 Re: What engine to Swap, 2021 
    mguzzo
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    Default 04-23-2021
    if the car's worth saving and modding, drop in a 98-2002 L67 including trans and harness. This combo would be easiest to mod and tune and you avoid the idiosyncrasy of the 2003+ PCM / trans.
    --
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    Old '98 GTP Coupe: VS Cam, 3.0, S2IC, 42.5#, TOGs, N*/LQ4, Corsa. it once ran a 13 flat
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  5. #5 Re: What engine to Swap, 2021 
    BrandonHall10
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    Default 04-23-2021
    Is emissions testing an issue?
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  6. #6 Re: What engine to Swap, 2021 
    slgreen319
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    Default 04-23-2021
    Yes, sadly. Im in CA so it has to be smogged every 2 years. The last time I got it tested was 3 months ago so I have a while, but I hope on keeping the car. Everything else is in good shape.
    Any tips on buying a used engine?
    good websites or anything like that?
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