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You are watching: How long will a northstar engine last


Bonneville GXP/ Northstar powered Cars comment on your Bonneville GXP and/or any other Northstar it is provided Olds or Cadillac... Consisting of the 3.5L Twin cam V6 (Short Star ) 4.0L and also 4.6L Northstar V8"s.Please use general Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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Northstar life span?
Hi, I"ve looked around and also found details on failures for the northstar4.6 after ~ 100K miles specifically at 122K but is over there anybody with numerous miles on castle and an excellent stories around this engine?
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There have actually been part high usage examples, however I believe them to it is in the exemption rather than the rule. I watch it favor this:Worry cost-free window closes around 120k milesEnd of life is usually caused by a mechanical failure roughly 200k milesThe benefits room the power they make and the noise they do doing it.Drawbacks encompass fuel economy, absence of accessibility, etc. Contrasted to the 3.8, which is notorious for running till it fall dead (excluding LIM/UIM casualties), which is usually long after the transmission has actually exploded, and the body has actually rattled (or rusted) chin to pieces.
There have actually been some high purpose of use examples, yet I believe them to be the exemption rather 보다 the rule. I watch it choose this:Worry cost-free window closes around 120k milesEnd the life is usually brought about by a mechanically failure approximately 200k milesThe benefits room the strength they make and the noise they do doing it.Drawbacks include fuel economy, lack of accessibility, etc. Contrasted to the 3.8, i m sorry is infamous for running until it autumn dead (excluding LIM/UIM casualties), i m sorry is usually lengthy after the transmission has actually exploded, and the body has actually rattled (or rusted) chin to pieces.

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I also want to add, if you can get headgasket issues addressed, or recognize that castle have already been addressed permanently, 122k miles more than likely still has life left in it. If not, it"* a ticking time bomb.
What appears to occur the head gaskets begin to leak climate in some situations they leak coolant right into the burning chamber and because water no compress castle rip the threads the end of the block O there is a fix referred to as timserts were you drill the block and tap it out biggerand tread in a insert through threads on the end side and insidebest left up to a machine shop top top a bare blockAnd who is to say it wont take place again Lets simply say the aluminum in a beer can is far better quality thenthe block is made ofDid us say anything about were you have to remove the engine to gain the heads offor the oil pan in the sub blockAnd allows not forget when your wife calls you saying the starter is deadand girlfriend think no large deal i will change it in ~ her work right!!GM"* idea to be hey how have the right to we screw every one from working on this more then we all all set haveI understand we have the right to put the starter under the input manifoldthe only world that still have one soon finds out there life savings room gonepaying part one to deal with it