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High mileage LS1s

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Old Dec 15, 2007 | 06:04 PM
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Default High mileage LS1s
I'm not sure if this is the right section, but I'm looking to buy a '98 Camaro Z28 with 159k miles on it. The owner says it runs great, but being around LS1 vehicles a lot, I get the impression these motors don't last over 170-180k miles without a rebuild. Correct me if I'm wrong?
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Old Dec 15, 2007 | 07:44 PM
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idk my buddy went 11.60's with a ms4 and everything supporting done. and it has 149k and he was shifting at 7k... then he sprayed it 4 times and ran 10.60's at 135, and didnt have a RPM window switch and hit the limter with the nitrous on... that wont work though lol
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Old Dec 15, 2007 | 07:49 PM
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Wow, sounds like he has a strong motor.

Anything I should look for in a very high mileage LS1?
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Old Dec 15, 2007 | 08:04 PM
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just look for milky white substances in the oil, make sure oil pressure is good, pop radiator cap and look for sludge. The ls1 holds up pretty well
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Old Dec 15, 2007 | 10:40 PM
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mine has over 160k on it and it gets faster everytime i go to the track. As long as they are taken care of these ls1's hold up pretty well
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Old Dec 15, 2007 | 11:08 PM
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113k and counting here
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Old Dec 16, 2007 | 09:52 AM
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With 140K miles my stock LS1 with shorties got 29mpg and went 112mph in the quarter. A buddy swapped it into a 3rd gen and it's still going strong. If maintained it should be a 200K+ motor.
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Old Dec 16, 2007 | 10:22 AM
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If it was taken care of there should be no problems.

Like stated above just make sure the oil pressure is good.

With 159k, I'm going to assume there is going to a bunch of squeaks and rattles. That is normal for f-bodies so don't freak out.
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Old Dec 16, 2007 | 11:28 AM
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i agree.... but however mine just went at 118k miles... thought i maintained it well...
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Old Dec 16, 2007 | 12:07 PM
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ask for a compression test..... a rebuild isnt the end of the world if you gotta do it
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Old Dec 16, 2007 | 02:27 PM
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Originally Posted by TheLS1Kid
If it was taken care of there should be no problems.

Like stated above just make sure the oil pressure is good.

With 159k, I'm going to assume there is going to a bunch of squeaks and rattles. That is normal for f-bodies so don't freak out.
I looked at the car today. 159k and barely any squeaks or rattles. Oil looked healthy and motor pulled strong.
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