TQ / HP question for Keith

[Dwight]

Keith,
I have a 5.0 block with a 354 stroker kit, 3.47" x 4.03" with 5.4 rods, EFI, 90 mm mass air, 70mm TB, 36 lb injectors, dyno tuned & chip, 190cc Pro Comp aluminum heads 2.02 - 1.6, 1.7 roller rockers, 1 5/8" headers, 10.5 - 1 cr.
Comp cam 35-518-8 fw XE274HR-12
gross valve lift int .555 ex .565
duration @ .006 tappet lift 274 in ex 282
valve timing @.006 open close
int 29 BTDC 65 ABDC
ex 77 BBDC 25 ATDC
these specs are for cam installed @108 intake center line
int ex
duration @ .05 224 232
lobe lift .3480 .3540
lobe separation .112
this motor dyno'ed at 323 rwhp & 375 rwtq

Question: why the big different is tq & hp? What controls the rpm range of hp & tq? What would it take to get 375 HP & Tq? I know that several components have an influence on tq & hp but I would like to better understand it.

Thanks
Dwight