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What up with that? Seems a bit extreme.
It's mostly used to seat the piston rings and get proper oil flow throughout the block for better lubrication and performance like any car. However, with the LS3 this is especially important because depending on how it's broken in the engine can be a real screamer or a flash in the pan. LS series motors have been known for this.

I've seen guys whose L99/LS3 engines have pretty much 'woken up' at that mile range and turned into some beasts of cars from their former 'docile' selves. Others just don't bother and the engines tend to actually underperform.

This is also true for the LLT motors in the LT and LS cars.
 

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Doesn't mean you have to drive like a grandma on her way to bingo.:eek::rolleyes::p

You can pretty much drive it as you would normally...biggest thing is to keep your rpms varied (no cruise control) and don't rev the living snot out of it.:eek:

My kid-gloves came off at 1100 miles. Changed the oil and went for a tune. :D
 

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Discussion Starter #4
4000 rpm

Thanks for the info. I'm gonna drive it like I want and keep it under 4K rpm (per the owners manual). Glad I read that part because my salesman told me they were pre-broke in and to drive it like I want, no mention of the 4K limit.

I was going to start red lining it after about 200 or 300 miles until I read my manual last night. I bet a lot of people are missing this.

I have read about a lot of these engines waking up after 1K to 1.5K miles. Mine seems pretty strong already, and I just traded in a supercharged 400 rwhp 2006 Mustang. Had a cammed 2000 Vette before that. I was anticipating being dissapointed with the acceleration on the Camaro based on weight, but I'm very happy so far.
 

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i babied mine til about 1,000. dont know if its broken in or not, but im only at about 1700 right now.
 
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