What were the revisions to the Northstar in 2000?
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Northstar Engines and System Technical Discussion Discussion, What were the revisions to the Northstar in 2000? in Cadillac Engine Technical Discussion; I've heard on here that the Northstar was reworked a bit in 2000, making a more fuel efficent and reliable ...
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    I~LUV~Caddys8792's Avatar
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    What were the revisions to the Northstar in 2000?

    I've heard on here that the Northstar was reworked a bit in 2000, making a more fuel efficent and reliable engine, and IIRC, the post 2000 Northstars have a lot less problems with headgaskets. What were all those changes?
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    JimD is offline Cadillac Owners Connoisseur
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    Re: What were the revisions to the Northstar in 2000?

    Roller cam followers.
    Redesigned combustion chamber and a point or so lower compression ratio.
    Thread pitch changed on head bolts and slightly longer threaded section.
    COP ignition.
    PCV arrangement changed.
    Seconday AIR pump.

    That's all I can remember.

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    Re: What were the revisions to the Northstar in 2000?

    Compression dropped from 10.3:1 to 10:1. And what he said!

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    Re: What were the revisions to the Northstar in 2000?

    I also wonder why 2000 and up has a silencer engine ? I don't think resonator itself would do that considering some owners took it off but no difference

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    Re: What were the revisions to the Northstar in 2000?

    most likely people complained it was too loud
    remember we do drive "old ppl cars"
    we just drivem like we stolem ahahaha

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    Re: What were the revisions to the Northstar in 2000?

    So basically, they were easier to do maintenance on, the HG wasn't as much of an issue, they were more reliable and they ran 87 octane?

    The reason I ask is I've always been a little leery of the Northstar's reliability and durability, but I love the 96-02 Eldorados...it's the #1 car I wanna buy next, but my parents are anti-Northstar, but if I found a ETC, in the right colors, with the right options, with low mileage and records of the maintenance, I'd try and convince them so we can all win.
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    Re: What were the revisions to the Northstar in 2000?

    Quote Originally Posted by CadillacETC1997 View Post
    most likely people complained it was too loud
    remember we do drive "old ppl cars"
    we just drivem like we stolem ahahaha
    Yeah I forgot that olds ppl cars thingy lol .I can't think how much HP a Northstar would hit if it was a youngster car considering old ppl has 300 HP lol

    Quote Originally Posted by I~LUV~Caddys8792 View Post
    So basically, they were easier to do maintenance on, the HG wasn't as much of an issue, they were more reliable and they ran 87 octane?

    The reason I ask is I've always been a little leery of the Northstar's reliability and durability
    Chad, you can run 87 octane in newer Northstar but from what ppl say , the higher octane you run the more mileage you get .
    I have been using premium in my cars but I see let's say if you own a fleet then a few cents per galon would be matter considering annual mileage

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    Re: What were the revisions to the Northstar in 2000?

    So I need to ask a question about the 2000 Northstar. I am considering buying a 1998 to 2000 STS in the spring. Is it my imagination or have I noticed that the 2000 NS seems to need pistons/rings more often due to uncontrollable oil burning and the inability to clean them once they become caked up? I understand that if this year was 'babied' its not good...

    If this does in fact occur, what component is related to the 2000 that could cause this?

    My gut is, I want a 2000, but if the 2000 has a propensity to have that problem.... I might avoid it. What do you guys think

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    Re: What were the revisions to the Northstar in 2000?

    My daughters '02 SLS (Ruby) and my '03 DHS, both burn much less oil than my '97 did.

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    Re: What were the revisions to the Northstar in 2000?

    I run my 2000 STS hard, and it doesn't use much oil.

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    Re: What were the revisions to the Northstar in 2000?

    My 99 uses up a good bit of oil. I burn up to 2 quarts before I even get to an oil change, and I run it like its a damn civic at a street race, except it's not a civic. It's way more than that. It's an elegant lady called my Classillac.

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    Re: What were the revisions to the Northstar in 2000?

    There is a big section in the middle describing the engine changes:

    http://media.gm.com/division/cadilla...e/00press.html

    I seem to recall there being a Powertrain release too, though it's a bigger pain to search for those.

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    Re: What were the revisions to the Northstar in 2000?

    Thanks for sharing. Info I wanted to know as well.

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    Re: What were the revisions to the Northstar in 2000?

    I think that "center feed" intake manifold is the reason for the quieter operation (especially for the lack of "intake growl" at WOT).

    Does anyone know where the electric air pumps are, if the car has them? That link (excellent link Aurora40) mentions electric air pumps if the car is a LEV vehicle. The RPO codes on my 2001 STS indicate that it has the federal emission system certification (no special CA or NY or anything like that), but also that it carries the NLEV certification (National Low Emission Vehicle). I haven't seen where the air pumps are.

    Thanks.

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    Re: What were the revisions to the Northstar in 2000?

    Quote Originally Posted by jadcock View Post
    I think that "center feed" intake manifold is the reason for the quieter operation (especially for the lack of "intake growl" at WOT).

    Does anyone know where the electric air pumps are, if the car has them? That link (excellent link Aurora40) mentions electric air pumps if the car is a LEV vehicle. The RPO codes on my 2001 STS indicate that it has the federal emission system certification (no special CA or NY or anything like that), but also that it carries the NLEV certification (National Low Emission Vehicle). I haven't seen where the air pumps are.

    Thanks.
    Jason, this is from 2001 and #2 is a photo of the air pump, Mike
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