Would having different valveseals cause any damage? I got mine replaced last night and i had 7 black ones and 1 brown one on the passenger side, and 5 black ones and 3 brown ones on the drivers side. Or does this even matter? I have PRC LS6 heads btw.

 

The different valveseal color is just the type of material. They are all the poly material that you have. Viton is blue. It will not hurt anything at all.

 

When I got my cam kit form TSP, it had all brown ones. These are the exhaust, I think. The only thing I can think of is the brown ones may withstand heat better than the black ones. But I'm not sure; this is just a guess. Good luck!

 

hmm, i'm starting to wonder if i have more major issues?

https://ls1tech.com/forums/general-maintenance-repairs/725917-valveseals-replaced-still-problems-i-dont-know.html