TrickFlow Spark Plug Problem?

[bloh1]

Do the trick flow heads have the same potential problem the stock heads have of blowing the spark plug out?

 

[Dark04GT]

Theoretically they have a full 3/4" of threads so they should be more resistant to spark plug blowouts. That being said, nothing is completely bullet proof but it is a step in the right direction.

 

[Gregg@TFS]

Theoretically they have a full 3/4" of threads so they should be more resistant to spark plug blowouts. That being said, nothing is completely bullet proof but it is a step in the right direction.

This is correct, the heads do have a 3/4" threaded spark plug hole compared to the factory heads that have about 3 threads in the head. I have yet to see anyone blow a spark plug out of one of our heads.