Anyone have any experience with Max timing advance for Vortec SB heads?

I have heard 30 degrees is the max.

THX

I think I recall that you set em to 8 degrees and they advance to 32 max via the ignition module.

28-30* max timing is what I have read.

I also think like this.

GM vortecs are different, 32 sounds like too much. The chamber burns faster and there is a hot spot that can cause detination. Someone that knows the facts will certainly chime in.

if you upgraded to the vortecs on a std engine 26 is it !! otherwise 28

I have mine at 34

What heads do you have? I have mine at 36, vortecs are different

Mine are not the 062 heads, I can't remember the number right off but they are vortec they used them in heavy duty trucks and what not

I have 906's