powerofdreams

sup fellas, im new to this side of H/T. im a real all motor lover but i had a question for the turbo PROS. i recently purhcased an ls block that has been sleeved by RS and has an 86mm bore. now my intentions are to build a wicked *** all motor monster out of this block but then i thought, if i were to ever build a turbo motor..... this would be perfect. but then the first thing the dude i bought it from said was "you cant boost this motor because it has an 86mm bore, if you tried, you would blow headgaskets all the time."
now i'm not a boost expert, (to say the least) but is this true??? will the motor blow head gaskets all the time if this block is boosted???
any input from boost experts would be appreciated.