All I can say it this motor is toast I have a Valvegod LS6 block (peeps on the LS1 sites know whohe is) and they are NOT "ready to run" as Ill post a couple pics of the bearings. Some arent the blocks fault, but the bad one is. The line bore is WAY off.

I actually had the motor ready to pull in about 4 hrs.

Ths is the main bearings