300hp N* to a Base N*
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Northstar Engines and System Technical Discussion Discussion, 300hp N* to a Base N* in Cadillac Engine Technical Discussion; WIll a base northstar work in a DTS with the HO northstar? I found a pretty good deal on another ...
  1. #1
    1990CaddyBrougham's Avatar
    1990CaddyBrougham is offline Cadillac Owners Connoisseur
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    300hp N* to a Base N*

    WIll a base northstar work in a DTS with the HO northstar?

    I found a pretty good deal on another 00 DTS, needs a motor, and also a good deal on a motor, but its from a base 05

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    CadillacSTS42005's Avatar
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    Re: 300hp N* to a Base N*

    Will it bolt in
    yea
    will you have some other issues like it not running properly due to the variance in cams
    yea
    if you get the DTS and put the base motor in with the DTS heads then youll be just fine but keep in mine then you pretty much doing headgaket repair

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    C&C's Avatar
    C&C
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    Re: 300hp N* to a Base N*

    "Sub" you out there; what say you. I'm thinking it should be fine (but I yield to the more experienced).

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    Re: 300hp N* to a Base N*

    ouch
    i believe thats a burn on me....

  6. #5
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: 300hp N* to a Base N*

    C&C, STS2003 has a couple of good points, and quite frankly I have no experience swapping a 2000 4.6 with a 2005. From reading CF threads concerning different years/models, the install you're contemplating could be done, but there will be some mechanical and electrical/electronic hoops to jump through. There were camshaft and engine controls changes over those 5 years. It doesn't appear to be a bolt-in, and may present some problems to be worked out. My .02 . (Best bet? Go to a closer year motor/transmission, if possible.....01 or 02.)

  7. #6
    AJxtcman's Avatar
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    Re: 300hp N* to a Base N*

    The VIN Y (275hp) will make More Power than the VIn 9 300hp oh I mean the 292hp will in that car. I would look for a 2002 to 2005 VIN Y engine

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    CadillacSTS42005's Avatar
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    Re: 300hp N* to a Base N*

    more power down low you mean AJ

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    AJxtcman's Avatar
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    Re: 300hp N* to a Base N*

    Quote Originally Posted by CadillacSTS2003 View Post
    more power down low you mean AJ
    YES anything below 5100 rpm's, but you run your car over 5100 constantly correct. You never drop below 5100.

  10. #9
    Crown Vic Owner is offline Cadillac Owners Connoisseur
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    Re: 300hp N* to a Base N*

    These cars definitely need the lowend.


    Would it be possible to swap over the new PCM and harness or is that a total fockin nightmare?

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    Re: 300hp N* to a Base N*

    AJ
    lets just say theres a reason why my STS gets at BEST 14 mpg

    and CV
    no that would make matters even worse the new pcm wouldnt be ready to accept the 3.71 gears and would throw a constant CEL lamp

  12. #11
    Crown Vic Owner is offline Cadillac Owners Connoisseur
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    Re: 300hp N* to a Base N*

    Would it fock up the shift scheduling or is that done via RPM on these motors? WHY would it throw a CEL? Could a idiot with a tech 2 or similar change the RAR setting if there is one?

  13. #12
    AJxtcman's Avatar
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    Re: 300hp N* to a Base N*

    It is just a cam swap.

  14. #13
    Ranger's Avatar
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    Re: 300hp N* to a Base N*

    What about the mismatched final drive?

  15. #14
    AJxtcman's Avatar
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    Re: 300hp N* to a Base N*

    Quote Originally Posted by Ranger View Post
    What about the mismatched final drive?

    I was thinking he had an STS not an SLS.

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