use the highest lift cams you have .... measure the height ( tallest point of the lobe)with a vernier caliper ... measure the base circle .... subtract the bc from the height and that is your lift dimension .you can slightly play with torque by cam timing .... advancing the intake cam moves the torque figures lower down the rev range . the slingshot 88-89 cams are great .... so are the 89-90 1100 cams .