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Torque and horse power is added to the over all of what you all ready have.A turbo or supercharger have nothing to do with putting in TQ.or HP at any one given rpm range.It covers the whole rpm range at the same levels.
All that is determined by your cam profiles,lift,duration,and above all the timing of that big ole spark.Advance timing will give you a whole bunch of extra everything depending again on the cam profile,amount of A/F charge you get and most important right now for most of us the octane of the fuel needed for what you are trying to cram into your firing chambers.If you don't know,WELL the more A/F charge you cram into your engine will demand higher octane,clear up to a point that you may not be able to use pump gas with out pre detonation.Plus if these pistons and rods we have are not forged,well you are not going to be able to extract enough.Forced induction will raise the the compression ratio of your engine,the more A/F crammed into each hole will even blow a head gasket if you try to put too much psi in there.The engineer beat around the bush a bit but did say that 8 psi was about the limit and 4/5 would be best.
The new TRD SC raised the HP to 504 at I think 7 psi.I'd say more than that maybe at high rpms and boost could even blow the rods out the bottom of the engine.
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