3.6l VVT to Direct injection conversion?

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V6: 3.0, 3.2 LA3, 3.6 LY7, 3.6 DI LLT Discussion, 3.6l VVT to Direct injection conversion? in Cadillac Engine Discussion; The new CTS is going to have the same 3.6L engine we have now but in both the VVT and ...
  1. #1
    darkwingfrog's Avatar
    darkwingfrog is offline Awaiting Email Confirmation
    Automobile(s): Cadillac 09 CTS-V Crystal Red Tintcoat
    Join Date
    Oct 2006
    Lexington, KY

    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
    JoeCaddy1 is offline Cadillac Owners Member
    Join Date
    Oct 2003

    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
    Join Date
    Oct 2005
    Des Moines, Iowa

    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
    Automobile(s): none
    Join Date
    Nov 2005

    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.
    rcordero and rcordero like this.

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