Thread: gt conversion to s/c

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  1. #1 gt conversion to s/c 
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    what all is involved and what all is needed start to finish to add a supercharger to my 1999 gp gt. worth it or better off just finding a gtp ?
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  2. #2 Re: gt conversion to s/c 
    GTP Level Member Toasty's Avatar
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    Quote Originally Posted by 59chevy View Post
    what all is involved and what all is needed start to finish to add a supercharger to my 1999 gp gt. worth it or better off just finding a gtp ?

    depends if you want to do it the easy way, or the right way.

    zzp's easy way consists of a kit, special machined M90, and fuel logs.

    the proper way essentially is to swap the entire top end of an L67 motor onto your L36 (heads on up) + pcm
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  3. #3 Re: gt conversion to s/c 
    SE Level Member 1998gpgt's Avatar
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    You have your choice of:

    ZZP SS M90 kit- https://www.zzperformance.com/grand_...=382&catid=109
    or
    Topswap- W Body Store Supercharger Conversion Kit ClubGP Message Forum troubleshooting

    The wbodystore page was just a reference, as you will be able to source all those parts from somewhere else for much less.

    And FWIW, deciding to supercharge my car was one of the best decisions of my life.
    1998 Grand Prix GT 337whp/363wtq 12.952 @ 112.02
    2000 Grand Prix GT & 2007 Grand Prix GT
    2004 GTO 13.610 @ 102.69
    1985 Cutlass 455/TH350
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