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Thread: 3.6l VVT to Direct injection conversion?

  1. #1
    darkwingfrog's Avatar
    darkwingfrog is offline Awaiting Email Confirmation
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    3.6l VVT to Direct injection conversion?

    The new CTS is going to have the same 3.6L engine we have now but in both the VVT and Direct injection. My question is, how hard would it be to convert an older VVT engine to the new 300hp direct injection model? What parts are involved? Would it be just intake and PCM?


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  3. #2
    Join Date
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    Re: 3.6l VVT to Direct injection conversion?

    New heads, new intake, new injectors, new wiring harness, new fuel rail, addition of a high pressure pump. Depending of the vintage of the original engine you may also have to replace the cams, cam phasors, and entire timing set. Pretty much everything from the block up.

  4. #3
    nickc50310's Avatar
    nickc50310 is offline Cadillac Owners Master
    Automobile(s): 2004 Customized black on tan 3.6L CTS
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    Re: 3.6l VVT to Direct injection conversion?

    Ill just get my headers and dyno tune and crush any direct injection CTS!

  5. #4
    ewill3rd is offline Cadillac Technician
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    Re: 3.6l VVT to Direct injection conversion?

    You'd only need to change one part, take your old car to the dealership, give them the keys and get the keys to a new one with direct injection.


    Seriously though.
    That would be a major ordeal and who knows what you would end up with.
    The whole fuel system is different, the wiring will be different and any number of other things.


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