Re: De-Stroked 454.
I have a 496 now and it is about like what you mentioned you want yours to run like.
The problem we have here is that we aren't going to be competitive regardless b/c our motors are do all things pretty good, but do no one thing great like a dedicated motor will do.
Drag cars need high rpm drag motors, a cruiser needs a fuel eff. motor so you don't break the bank cruising and a track/road course or an auto-cross car needs one that makes power everywhere and that can wind up AND down fast.
See what I mean..
I built mine for what I call, max. midrange grunt which is just where I figure a multi-purpose motor needs to produce MOST of it's power the most eff. way it can.
I am right at 9.8 to 1 CR. so I can burn good pump gas and have installed a good old CC 282S solid cam that in my combination , (per D2K), produces right at 550 hp at 5500 rpm and 580 t at 4500 rpm for TO ME, great midrange GRUNT!
I call my motor, my great big, "tow-truck" motor b/c I figure it can be used to pull a 30' horse trailer in a Dualie if I ever have to part with it!
One motor that will come close to what you want to do is like this;
4.6" b x 3.76" s = 500"! It will wind up like a Z-28 motor AND b/c of it's shear size will have plenty of grunt, imho.. Just make sure you have a GOOD/strong high rpm rotating assembly in her is all...
Take your pick and have fun..