Thread: 3.1 swap to 3.8

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  1. #1 3.1 swap to 3.8 
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    Hey i have a blown head gasket on my grand prix it is a 1999 grand prix se with the 3.1. Now i am wondering if it would be possibly to switch it out for a 3.8L. Does anyone know if that is possibly, and if so, how much work is required to do that?
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  2. #2 Re: 3.1 swap to 3.8 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Sure its possible and a few have done it.

    You'll need the engine, wire harness, pcm and a few other odds and ends. I am not sure if there is a write up on the exact list.

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  3. #3 Re: 3.1 swap to 3.8 
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    Would you happen to know if the tranny is the same?
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  4. #4 Re: 3.1 swap to 3.8 
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    Quote Originally Posted by Bigheadedon View Post
    Would you happen to know if the tranny is the same?
    yes you will need another transmission
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  5. #5 Re: 3.1 swap to 3.8 
    GT Level Member Dakoda's Avatar
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    Might as well go all out and get the s/c engine if your swapping...
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