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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; how did you do that? '99 uses coils and wires for ignition and 2000 uses the coil-on-plug design...
  1. #61
    RippyPartsDept's Avatar
    RippyPartsDept is offline Hi, I'm Chris - Please Read My Signature
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    Re: Northstar Swaps - What years are interchangeable and the differences

    how did you do that?

    '99 uses coils and wires for ignition and 2000 uses the coil-on-plug design

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  2. #62
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    Quote Originally Posted by RippyPartsDept
    how did you do that?

    '99 uses coils and wires for ignition and 2000 uses the coil-on-plug design

    If that's the case then his 99 special or different. Cuz it's for sure a 99 DHS, has 99 front struts (the sway bar links connect to the strut, not the control arm). And his engine and harness was identical my 2000 DTS. When my mother still owned my DTS we put a scrapyard engine it. That engine leaked oil like crazy. so the scrapyard sent us another and didn't want he first one back. I re-sealed it and put it in my service writers DHS. After 2 years, the scrapyard engine blew thread gaskets. My parents asked if I wanted the car, I took it and fixed it all up. So anyways his 99 DHS is identical under the hood as my 2000. I not know the month it was made, perhaps it's close to the change over to 2000 and has a 2000 drive train.

  3. #63
    1BadCadSTS's Avatar
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    Dhs wasn't started until 2000. 1999 was the deville, delegance and concours and fleetwood extended body. 2000 was the Deville, dhs, dts, des.

    I smell something fishy...

  4. #64
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Bottom line: 1999 flat tappet engine is VERY different from a 2000 and later roller cam engine - mechanically, ALL ignition, PCM, electrical harnesses and sensor-wise.

  5. #65
    Caddy-EaRL's Avatar
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    Every since he bought the car he's told me it was a 99. I've never looked for myself. He told me he couldn't find the quick struts for it, cuz they don't make them for a 99. But I know for a fact that everything under the hood is identical to my 2000. But I bet ya first thing Monday morning I'm gonna look and see for myself lol.

  6. #66
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Check out the build date on the driver's door sticker - Model year 2000 production began in ~August 1999 and ran into late June 2000.

    You could enter the sample subscription page in www.compnine.com and plug in the car's VIN to see what it is, too.

    Here's the VIN breakdown for the Seville series ............. Deville bodies would have different characters in the 4 and 5 locations.

  7. #67
    RippyPartsDept's Avatar
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    Tenth digit of the VIN is year model. Y for 2000 - X for 99.

    Build date for many cars is the year before the actual model year.
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at
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  8. #68
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    Quote Originally Posted by RippyPartsDept View Post
    how did you do that?

    '99 uses coils and wires for ignition and 2000 uses the coil-on-plug design

    That's funny bc I've seen a few guys in the junk yard pulling out 2000+ Northstars to put in 98's/99's Deville's

    I use to laugh to myself bc from what I've read they won't even fit/connect the same

    Maybe they have some secret method??????


    Sent from AutoGuide.com Free App

  9. #69
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    Dom 08-99

    Vin says its a 2000. LoL my service writer shuda known to check the vin. We do on every other car we work on hahaa

  10. #70
    RippyPartsDept's Avatar
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Another case closed by the caddy owners mystery solvers!

    CadillacLuke24 likes this.
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at
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  11. #71
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    Re: Northstar Swaps - What years are interchangeable and the differences

    Too bad that almost no one can put 2 and 2 together and come up with 4............ as in the new ads for the "2014" cars - many on sale next month ??????? DUH !!!!!

    ........... and there's a pretty good chance, particularly with offshore cars, that as of some date - say 07-01-13 - EVERY one of their cars, regardless of when it was actually built, will be a "2014" model. (Remember: We have European members who own and drive "2001" Sevilles - built in 1998 and early 1999 - a VERY different car from the 2000 and later model years.)

    Our American lines generally shut down about now, undergo reconfiguration, and start patching together the "2014 Flapfish Xt3bR14GT" in early August.

  12. #72
    97EldoCoupe is offline Owner of Northstar Performance
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    Re: Northstar Swaps - What years are interchangeable and the differences

    A note on the 04+ transverse Northstars, you cannot use the oil manifold plate that fits the 1995/96-2003 Northstars. The oil dipstick tube will not fit properly. If you're doing a build or a re-seal on a 2004+, you must use the updated oil manifold plate.

    Likewise, 93,94,part of 1995 I do believe, used one type of manifold plate- without the integrated rubber seal for the oil pump pick-up tube. These pick-up tubes were sealed to the oil manifold plate with an O-Ring. I will get part numbers and post to my website yet.

  13. #73
    Submariner409's Avatar
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    Re: Northstar Swaps - What years are interchangeable and the differences

    westman, Your posts on a replacement engine for your DTS have been moved to your own thread in the main Forum.

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