[HWYSTR455]

Sounds familiar! And yes, too many variables to state any 'magic' number, every build is different. The basic rule of thumb does apply though, add a point for aluminum heads. Many these days are shooting for roughly 10.2 - 10.7 on a performance street build, though it requires careful planning and execusion when you lean towards the bigger numbers. For the most part though, SCR is a small portion of the formula.

Adding forced induction changes a lot of things, and it's best to plan for it AND execute it at the same time.

My suggestion is to either follow a proven build or contact a professional builder for advice. You don't want to rely on hear-say (or 'here-say') from internet chatter, especially when your dumping that kind of coin into a build.

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