[WSSix]

Thanks guys.

The cam is one that's spec'd from Advanced Induction as part of their heads/cam package for LT engines. They recommended 11.25 to 12:1 SCR with this combo to produce the desired/claimed power. And, yes, it will work with 93 octane. I, wanting to understand what all is going into my engine and how it works, am digging deeper instead of just throwing it together. That's when I started looking into my DCR numbers and realized they would be well over 10:1 if I went with the Mahle pistons I was going to use. The SCR would be 12:1 with those pistons. Everything I'm reading says that can't work on 93 octane as the DCR is way too high. Yet, Ai has proven results and is one of the best in the country with LT1/4 motors. They charge a premium and get it for a reason. So do I just build it like they say and stop worrying about it or try to understand what's going on?

I haven't asked Ai about any of this. I guess I should. Part of me says they aren't responsible for educating me on engine theory. Another part of me says I spent a lot of money for their parts.

I'll be running the factory opti spark, Scott. I honestly didn't even think about upgrading it. Should I consider an MSD box?