HP 440 RATEING ... How much power will i have ?

With The 915's And The 8-1 Piston Will Make It Aprox 8.8-1comp, Then Mill Heads .060 [if Not Milled Already] That Will Bump It Up 1 Point In Comp To 9.8 Or So Then Run The Combo You Have Should Work Ok, Could Gasket Match Intake To Match Head For A Little Better Flow--ch4b Is A Decent Intake But A Torker Or Streetmaster Or Rpm Would Be A Better Choice For More Perf, If You Are Going To Rebuild Motor Then Ditch The 6-pak Rods But If Its Already Together Then Run It Like It Is Will Be Fine For Street Motor, And Alot Of It [the Performance] Will Vary By Weight Of Car -gearing-convertor-suspension Mods-headers-carb Etc, Just Research And Weigh Out Your Options For What You Have Or Can Afford,and Ask Questions And Opinions From People Who Have Been There -done It -improved Upon It And Finally Get Er Done.........just My Nickel's Worth.........there Are 100 Different Ways To Do Different Recipes So Figure Out What You Want To Do With What You Have Or Can Get And Do It Your Way And When In Doubt Ask For Help Or Direction , Main Thing Is To Have A Buttload Of Fun Doing It