How much hp can a blackhawk take.I am doing a 350 mag with a whipple charger.The motor will be mod and re worked with a bigger cam and pistons everthing bigger to handle 500+hp.I hope to have the revs no higher than 5200.the drive is a 1:5 ratio with 31p props.I was told that they can handle up to 600hp but they dont like high rpm.thanks craig.