lq9 Swap issue
I have been facing this issue more than month on my engine and its like sewing noise , when i hit the gas pedal or while driving the sound increase but on idle it smooth .
her is the engine setup ;
I bought this engine from the junkyards and i done full rebuild , and also swap BTR STAGE 2 TRUCK CAM.
- comp cam hardened pushrod 7.400
- ls7 lifters
- LS6 Valve Springs
- Trunnion Upgrade
- nnbs truck intake + 92 tb
- shorty headers
the engine stock bottom and heads never been milled.
so please guys help me to figure it out

her is the video link for my engine , to hear exactly what im facing :
https://www.youtube.com/watch?v=K2Lu...ature=youtu.be


