- Joined
- Feb 18, 2006
- Messages
- 10,084
They could have been warped from ATR. Wouldn't be the first set of headers that were warped by the welding to assemble. Ask me how I know.
I know how you know.

Every set off new headers need to be trued. The manufacturers fail to do that one last step. Just for the record too, I have never blew a header gasket.

RL