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1998 Vortec timing chain replacement

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Old 05-26-2005, 07:42 AM   #1
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1998 Vortec timing chain replacement

I did my fair share of searching but I haven't been able to find a definite answer...

Is there an interval that the timing chain should be replaced at? What is the manufacturer's recommended interval? (mine didn't come with a manual)

Thanks in advance!
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Old 05-26-2005, 10:37 AM   #2
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Re: 1998 Vortec timing chain replacement

thats a good question.
Old 05-26-2005, 11:10 AM   #3
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Re: 1998 Vortec timing chain replacement

No specific interval. If you're not changing out the cam or unless there is a serious problem with it being stretched, I really wouldn't worry about it.
Old 05-26-2005, 12:22 PM   #4
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Re: 1998 Vortec timing chain replacement

200k is when I'd think about it...

And really that's debatable. There are several trucks on here with 250k+ miles with the original ones. They last a REALLY REALLY long time.

Last edited by cavymeister; 05-26-2005 at 12:23 PM.
Old 05-26-2005, 05:10 PM   #5
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Re: 1998 Vortec timing chain replacement

Yeah, on the 4.3s they are reliable. In the 2.2, it seems around 75k miles or so.
Old 05-26-2005, 05:18 PM   #6
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Re: 1998 Vortec timing chain replacement

according to GM, the timing chain is designed to "last the service life of the engine". To me, that really doesn't say much... what is the service life of the engine? My thoughts are simple -- if you're not doing anything major to repair the engine, then don't worry about it. If you are rebuilding, or are otherwise doing something major, then replace it.
Old 05-27-2005, 04:19 PM   #7
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Re: 1998 Vortec timing chain replacement

I posted this same question a while ago, I pretty much determined that timing belts are the only thing that have a recomended replacement time. Chains on the other hand last a long time, some longer than others, just fix it if it breaks because the chance of it breaking arent definite. Maybe some chain dressing would be good for it though.
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