I have run my 8" on the current 351w roller and last yr on a 393 sflat tappit solid stroker.
I run 4:11 gears and a mini spool. Have 275/50 -15 Mickey Thompson ET street radials on it currently. I leave the line with the whells 6" off the ground.
The 8" will do fine if you do not wheel hop them to death.