Yes thats generally true, but mysetup is a bit different. Tim usually likes to run a max of around 420RWHP with a S/C motor. Generally you can get that with boltons and maybe an IC. Kenne bell says the internals are rated to 450RWHP...but we wont worry about that. My car has turbos, which are not turned by a belt, and overall reduce parasitic loss ALOT (thus why they make alot of power and torque) . Calling it safe would be a 30RWHP difference. Freeing up HP from parasitic loss is FREE hp, and doesnt put any real extra measurable load on your pistons/bottom end. Your motor makes X amount of power with 8PSI being blown through it. Now drag that down with a S/C pulley...all its doing is using that power that its making. Now take the pulley off, add a little exhaust restriction, and your just now able to use power that was already there, just that it was being used elsewhere....thats basically a turbo VS S/C. You will be showing more HP on a dyno, because now the power that was being used to drive the charger is being applied to the rear wheels. Last I heard @ 10PSI, a vortec S/C took over 60HP to turn BTW...but im betting its ALOT more than that. So here is my "list" of parisitic/drag loss reducing mods. Turbos =30 U/D pulleys= 6 p blower guys ) Aluminum flywheel = 4 How I figure, thats 40RWHP of FREE power ATLEAST that I have vs the adverage S/C motor. That means @ 460RWHP my car would have the same "strain" as the adverage 420RWHP S/C car. And since it is free, in theory I could get 460RWHP with the amount of effort it takes S/C guys to get 420. And here is how I come up with 500 being pretty safe. Stangmans car with VT stg 1 cams and NO INTERCOOLER made 440RWHP @ 8PSI with a novi for a while now...(like 10-1 A/F and 12* of timing..SUPER SAFE) . Take my free 40 and apply to that and bam 480RWHP...throw my HUGE IC into the mix, presenting cooler/safer intake temps and I figure 500RWHP wouldnt be too bad on my car LOL I know this is bench racing at its finest, but in THEORY it SHOULD hold true....so thats why I said ill take it as it goes and see how easily power comes for the car, and then decide how much we should go with it, because its not really an exact science. Did that make sence? And im a FIRM believe, that detonation is what kills 99% of FI modular 2Vs...I think if its safe enough, ill be A OK.