need to change valve stem on my head. high rpm and high power application. which valve stem should I go with. supertech , skunk2 or Viton?

 

You mean valve stem seals. If so OEM is always good, also had good luck with supertech seals plus they are cheap.

 

Um you can't change the valve stems, that's part of the valve... I'm assuming you mean valve stem seals.

They are all basically the same, just get a set of viton seals and call it a day.

And for the record viton is the material the seal is made out of, not the brand of seal. Valvetrain companies like Skunk2 and supertech all sell the same viton material seals so it doesn't matter who you buy them from, just look for the best deal.

 

yeah, I meant valve seals. thanks.