Sorry I missed the 1.5 HS rockers. Probably looking at a MSP from Bullet. Guys run those on the street, but you have to be on top of maintenance. Maybe a r125 and a r116, 255,267 @ .050.
I usually use .26 x 28” flow x 8 for hp targets on NA pump gas engines, I use 110% eff of wider lsa rollers. Guys get up to .27-.28 on pump gas. That .26 puts this at 690 hp @ 7000 in N\A. So 10lbs boost with average eff it is just over 1000 hp? Better intercooling 1100?? In a stock 455 block , 4.5 stroke with splayed mains? Man I thought I was crazy. Lol, You probably need the deep skirted girdle worse than any of my engines. Probably need one like my boosted 389 project. It is probably the only girdle I am working on that would maybe keep that 455 block from turning itself into 2 4 cylinders. I am working on that all day today, I am hoping to show Tom V. some of the models in the next couple weeks. Then likely everyone else the end of this month or in Feb. Good luck with your project..
