Whatever you guess your way I'll guess mine, Steve Brulé of engine masters uses the same basic formula, 1.125 x cid x rpm / 5252 = hp. No offence but I'll take his dyno experience over yours.
273 you have to be the biggest YouTube quoting, book smart, cut copy and paste guy I’ve ever seen. Have you personally ever done any testing yourself??? Do you race and if so how fast have you gone??? Please post some pictures of you cars.