I have a 5.3 ls cam specs are lift .525/.525 .050:226/234 center line 103 also has long tubes on it. the o2 wont read and stumbles when a hit the throttle. smells like it is running rich. have check the o2 wires many times and they are right. tune and log file is posted as well. Thanks in advance.
chevy 2 log.hpl
chevy 2.hpt