i got on the gas from day 1. i read about the hard break-in, and it makes sense to me, supposed to seal the rings better initially. Controversial but figured i would give it a shot. currently @2500k with no issues,
http://www.mototuneu..._in_secrets.htm
http://www.crateengi...es-W106C46.aspx
I don't think the crateenginedepot.com break in procedure is meant for production engines, I would bet the tolerances & clearances are way different in a crate motor. The 20W50 oil recommendation is not correct for production LS motors & AC Delco oil filters suck
