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Break-in on new LS1 engine?

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Old Oct 23, 2008 | 08:03 PM
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Default Break-in on new LS1 engine?

I may be getting a new replacement LS-1 under warranty. If this happens, is there a recommended break-in procedure?
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Old Oct 23, 2008 | 08:54 PM
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Originally Posted by Choreo
I may be getting a new replacement LS-1 under warranty. If this happens, is there a recommended break-in procedure?
Not to my knowledge John. I do think that after the installation, putting a few "moderate" (ring-seating miles) miles on the engine is not a bad idea though. I'm thinking on the order of say 50-100 miles would do it. These things are very well made and tough. No special "break-in" oil required either.

HTH
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Old Oct 24, 2008 | 01:05 AM
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Originally Posted by LoneStarFRC
Not to my knowledge John. I do think that after the installation, putting a few "moderate" (ring-seating miles) miles on the engine is not a bad idea though. I'm thinking on the order of say 50-100 miles would do it. These things are very well made and tough. No special "break-in" oil required either.

HTH
Sounds good to me. Seems like I remember something from the past to avoid getting into a "set" RPM range or speed for the first few hundred miles? To keep the engine moving up and down through a range as much as possible?

Last edited by Choreo; Oct 24, 2008 at 01:07 AM.
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Old Oct 24, 2008 | 08:06 AM
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Break the engine in as you plane to drive it. If you drive hard, break the new one in the same way.

Remember to change the oil after about 250 miles then 1500 miles. After that on your regular oil change schedule

Look for things in the oil.
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Old Oct 24, 2008 | 08:48 AM
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Originally Posted by Choreo
Sounds good to me. Seems like I remember something from the past to avoid getting into a "set" RPM range or speed for the first few hundred miles? To keep the engine moving up and down through a range as much as possible?
Running the new engine up and down the rpm range is generally a good idea. Point being not to "baby" the engine but not go overboard and red-line every shift either.

Generally speaking, most folks agree with the idea of not putting too much stress, i.e. high rpms, before the engine oil temp has come up to a level in the 150 to 180 range (approx) and with a new engine I would advocate being even more cautious in this regard during the initial engine usage period.

HTH
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Old Oct 24, 2008 | 09:09 PM
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Thanks for the replies - looks like I will be finding out as the new long block is on the way.
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