My LS1 has 125k miles on it.
I have upgraded the oil pump, run 15/50 M1, and run 1 qt over. The motor dyno'd 305 hp stock, unrestricted in Jan, and 260 hp with 46mm plate.
the motor seems responsive enough, but in th last race at Hallet, burned about 1/2 qt of oil. Sometimes I get a puff of smok on initial start up after it has been sitting.
Any reason for concern??
Antthing else I should be aware of with the LS1 or just run her until she breaks, then fix and balance her.