How many miles till a LS1 engine is fully broken? I have heard different things like 8,000 miles which sounds realistic but I was looking for a little bit more from more poeple with first hand experience or at least knowledge.

 

Depending on if you drive it like a grandma or a racer, it will vary. I'd say you are up to full power by 5K miles, and thats about it.

Tony

 

Not sure what "broken in" truly means. The LS1's definatley seem to make more power with 5-7000 miles on them than when new but their pretty much broken in when you drive them home...hammer away I say... <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />

 

I have been hammering away since day one with 8 times to the track since 12-8-01. My first time was 13.85 @102 and my best time with a lid on stock tires was 13.20 @108.Now slicks my best time 12.62 @110 with only 1.88 60 ft. best mph 112.45 with 4900 miles M6.