what would be the cons of supercharging the zz4, or for that matter the fast burn 385? my idea here is a supercharged 385 with tpis tpi, backed with a t-56. the pros are obvious, but what cons would i be faced with?

 

The fundamental problem (or drawback) is that the ZZ4 crate motor is built with high compression and hypereutectic pistons. This will limit your boost to very moderate levels and will not produce significant enough power gains to warrant the cost.