If you wish to pattern it after the OEM GM set up, Faylur has a good call there. Crane and Comp and Isky and Lunati so on build the cam to achieve what you want. Mind you the profiles are slightly different for today's fuel but all in all, a better cam. Most will still require no less than 9.5:1 and really want to see 10:1 compression. Choose wisely when it comes to pistons and cam. You already have the heads to do the job. Look at other cams you might consider running. Other profiles are available that will accomplish the task and yet have a big difference in character as far as the way the thing runs and pulls through the power band.