if by zero tolerance you mean that if the timing goes the valves will get bent then yes it is ^ that is wrong
Non Interference is that term and your engine IS NON INTERFERENCE !!
The 3FSE engine is not an interference (zero tolerance) engine.
No it is not all ls motors are very reliable
No. Nothing is zero tolerance if you measure to a great enough precision.
No
No
yes
Yes
yes
no
Yes
Yes.Yes.
Yes.Yes.