[MyFirstZ]

well, I installed new ls7 lifters on the driver side head. Drove the case and it felt good and sounded good the first day....... drove it today thought I was paranoid and heard it so I drove it a little harder and the noise came back.

Same spot driver side front of head.......

No idea how oil passages are on this car or what else to look for.

So far what was done to try and change or eliminate noise was......
-new ls7 lifters all 8 driver side
-swapped coils
-swapped wires
-new injectors, needed for the tune anyway.
-checked for exhaust leaks and welded any found.
-checked for broken valve train components (none)
-checked pushrod length. 7.4" put me at .063" preload.

Don't know what else to do,
maybe drive it with tech 2 see what's missing or swap rockers.....