Well you're going to love this! Lol... First off I'll answer your question it was a summit billet 9-way... That seems to be a nice setup from all the others I've had..
Anyways first call goes into Ken.. he says put it at the 108.5 and run it.. gives all his reasoning back and forth and doesn't want me to run into detonation problems with cast iron heads and in the neighborhood of higher compression.. not real high as we know it but up there...
Then I called Ted the engine builder on an unrelated subject but still approach the subject with him... He says leave it right where it is at 106.5 and talks about change stretch under the load of all the valve springs and such...
Ken talks about adding a little more timing to gain power back instead of running into the possible issue of overtiming and having to take the timing cover back off again....
I would have loved to have had these two on the phone together and just been the fly on the wall...
Ken grinds cams for a living...
Ted builds engines for a living..