Static displacement doesn't mean quite as much when you consider a 358" NASCAR motor is technically "bigger" at 9600 RPM than a 500" Bracket motor is at 6800 in terms of pumping capacity...assuming equal VE. After all the motor is an Air pump and (all else being equal) it's really the dynamic capacity that matters most, providing the gearing is optimized.
With big motors the longer the stroke generally the shorter RPM band between peak torque and peak power and with a longer stroke (assuming the same head flow) the faster the power (rate of decline per 100 RPM) falls beyond peak power, that's mostly a function of the frictional losses of the increased piston speed/travel.
Mopar wedges are relatively HP limited compared to say a BBC or Hemi not really due to port flow, but mainly because of the parallel valve placement causing the VE to fall. They do make a sh!t-Ton of torque through the middle though probably benefit from a longer (than BBC) rod/deck height) Wedges rely on a bigger bore as compared to a canted valve or Hemi so a a 4.50+ bore is a benefit. The sweet spot/balance for BBM wedges seems to be in that 550" 7500-7800 RPM range.
I have a complete 366" 48 degree R block W2 Motor I would love to rebuild into a reliable Easy 900+ HP turbo project....If only I had a nice Race Ready door car to put it in.
I was just at Darlington a few weekends ago drooling over my buddies 496" BBC nothin fancy home made 2700 pound 63 vette sporting 2 turbos clicking off easy 5.20's and 5.30's at 130 in the 1/8th....at less than 10psi of boost. Never lifted the hood the whole day into night of racing. Could easiliy go in the high 4's if he leaned on the combo a bit.
https://www.youtube.com/watch?v=ACeZZ5dNJDQA legit and certified cage 2200-ish E body is VERY IMPRESSIVE no matter how you get it there.
