Anyone into Camaro's Vette's or Chevelle's? or american muscle in general?

Well if anyone does I need a bit of help. Debating on a LS1 or a 454 small block for my next project maybe gears, cams, basic bolt ons and a blower, LS7 head. The compression are a bit high and I am only limited to boost 5psi and I wanna do more then that so I get a set of ported truck heads with the 72cc chamber. Does anyone know what the stock internals of those motor can hold? Any suggestions or ideas?

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