ls1500chevy

just got the truck about a week ago, looking to build it up, all motor though was gonna go with fi but id rather it be more reliable and there arent many trucks around here that a built ls1 couldnt beat, i outrun most as it is. so here it is single cab 1990 silverado 1500 shortbed with a ls1 swap out of a 98 camaro. not done yet by far, needs paint and some good shocks, drop shackles and coils up front, and im curious how much hp this engine is putting out? just got it so still have questions and also what is the best way to build this motor for all natural power, cam? what?