another example of a xtreme cam going flat. Voodoos are the same.
Just use an old school 260H or 268H (high energy compcam) and it will live a long happy life. Maybe not make as much power as the XE at first, but XE's don't make much power with a few flat lobes and chewed up engine bearings.
This is the reason I always recommend starting out with a complete 96 to 2000 350 vortec engine with factory roller cam and vortec heads.
Make sure to check the lifter bore clearance. I had a BBC that ate cams and it was from extra tight lifter bores. Roller lifters require even more clearance than a regular flat tappet lifter. 0.001 to 0.0015" for a flat tappet and 0.0015 to a 0.002" for a roller lifter.