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Northstar Engines and System Technical Discussion Discussion, Northstar Swaps - What years are interchangeable and the differences in Cadillac Engine Technical Discussion; I'd like to start by saying you guys have provided some great info in what motor are able to be ...
  1. #46
    4THGENCAMAROGUY is offline Cadillac Owners Member
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    Re: Northstar Swaps - What years are interchangeable and the differences

    I'd like to start by saying you guys have provided some great info in what motor are able to be interchanged with others.

    But I have a simple question.

    In the first post it says 2000-2003 are interchangeable. Last week I bought an 01 STS that was ran low on oil and spun a bearing...didn't blow a HG surprisingly. Anywho. I called a local yard and they have an 03 but the guy said 03 isn't able to be used on an 01. He said the comp lists 03 by itself and isnt interchangeable with others.

    Just want your guy's input as to wether I should get this motor or not.

    THANKS

  2. #47
    Submariner409's Avatar
    Submariner409 is offline If it won't run, slap in a big stereo
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    Re: Northstar Swaps - What years are interchangeable and the differences

    This tag is the VIN derivative of the original car the engine was in. The number will also include L37 for the VIN 9 and LD8 for the VIN Y.

    The tag on the front of the right cam cover is a build and sequence number only - no engine information there.

  3. #48
    aac123 is offline Cadillac Owners Member
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    Re: Northstar Swaps - What years are interchangeable and the differences

    For future reference I would like to know if a 2005 VIN 9 motor will work in a 2001 VIN 9?
    If so what modifications? I seen where it said an 04 would work but what about the 05?

  4. #49
    Black Beauty DTS's Avatar
    Black Beauty DTS is offline Cadillac Owners Fanatic
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    Re: Northstar Swaps - What years are interchangeable and the differences

    The '04 and '05 Northstar engines are essentially the same, so if the '04 will work then the '05 should work as well. However, you may have to swap the PCM also, because I believe the timing and fueling parameters are slightly different between the 2005+ and the 2000-04 VIN 9 engines.

  5. #50
    aac123 is offline Cadillac Owners Member
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    Re: Northstar Swaps - What years are interchangeable and the differences

    What about swapping an 04 engine into an 02 body?

    Will there be any issues with the 04 tranny in the 02 body?

  6. #51
    teledynamics is offline Cadillac Owners Member
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    Cool 4.6 from 2004 deville to 2002 deville?

    My 2002 DeVille has over 260,000 miles and now the dreaded head gasket problem has arrived. I have available a 2004 DeVille engine with only 80,000 on it at an attractive price. Both engines are 4.6L but it is about 120 miles from here so even looking at is is a probelm. I have seen pictures of it and it looks clean. My question is does anyone know if this is a drop-in swap or should I expect problems with the electronics? I,m not looking foreward to doing this job but it will be considerably less expensive than inserting the studs, (or timeserts) with the added benefit of less wear on the engine and a few extra parts also.

  7. #52
    teledynamics is offline Cadillac Owners Member
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Sorry but this will be a duplicate post, I posted under general before I found this thread. Swap 4.6 from 2004 deville "Y" to 2002 deville"Y"?
    My 2002 DeVille has over 260,000 miles and now the dreaded head gasket problem has arrived. I have available a 2004 DeVille engine with only 80,000 on it at an attractive price. Both engines are 4.6L but it is about 120 miles from here so even looking at is is a probelm. I have seen pictures of it and it looks clean. My question is does anyone know if this is a drop-in swap or should I expect problems with the electronics? I read the sticky about the knock sensors, can they just be tied together as one or just connect one of them?, and would it be necessary to swap the pcm as well? Also there is mention above that the 2004 has changed the AIR from vacum to electronic control, just swap out the valves? Any help will be greatly appreciate, especially before I make the commitment to purchase this and make the drive to get it. I,m not looking foreward to doing this job but it will be considerably less expensive than inserting the studs, (or timeserts) with the added benefit of less wear, an updated engine, and a few extra parts also. Thanx

  8. #53
    aac123 is offline Cadillac Owners Member
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    Re: 4.6 from 2004 deville to 2002 deville?

    2000-2004 - any 00-03 will bolt into an 04 body, or any 04 engine will bolt into a 00-03 body but you will need to change camshaft covers, ignition coils, knock sensors (drill & tap a hole for the 2nd knock sensor for a 00-03 engine to go into a 2004 body), and keep the oil filter mount with the engine it came off of. You may need to drill and tap a hole on the L.H. cylinder head for the coil ground strap, if you're installing the 00-03 engine in the 04 body.

  9. #54
    Submariner409's Avatar
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Not sure about the AIR and the knock sensors, but the 2004 also uses a significantly different ignition coil setup than the 2002, so that begs the question as to whether the ignition controls are also different ?

  10. #55
    bigm57ict's Avatar
    bigm57ict is offline Cadillac Owners Connoisseur
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    Re: 4.6 from 2004 deville to 2002 deville?

    He's going the other direction - '04 engine into '02 body

  11. #56
    Robgar is offline Cadillac Owners Member
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    Re: Northstar Swaps - What years are interchangeable and the differences

    AJ, good information,I'm learning a lot, just the only thing I don't see is what is the major difference between let say a 2000 Vin Y and a 2000 Vin 9, what are the major differences, or is it just the ECM, can I put a DTS engine into a base Deville with non or little modifications?

  12. #57
    Submariner409's Avatar
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Different cams, different tune, different PCM transmission calibrations, different final drive ratios.

  13. #58
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Quote Originally Posted by Submariner409 View Post
    Different cams, different tune, different PCM transmission calibrations, different final drive ratios.
    Subs on target
    The 2 Intake cams (GM has the same specs on the exhaust cams, but they have different part numbers - Hmm) The Gear swap on the Caddy's (Aurora's came with 3 choices all on the same cams and the GXP had VIN Y with 3.71's) The PCM calibration needs to match the gear ratio.

  14. #59
    Robgar is offline Cadillac Owners Member
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    Re: Northstar Swaps - What years are interchangeable and the differences

    So if I have A Vin 9, and have engine, trans, and PCM from a Vin Y, all will work? So Block wise, both blocks are the same for both VINs?

  15. #60
    Caddy-EaRL's Avatar
    Caddy-EaRL is online now Cadillac Owners Fanatic
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    Fwiw, our service writers 99 vin y blew head gaskets, and we had a re sealed 2000 vin 9 sitting there. We installed it and it runs perfectly for over a year now with no modifications whosever.

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