LT1-LT4 Modifications - what kind of numbers should i see with this cam?

268/276 adv duration, 218/224 duration at .50 and 570/565 lift with 113 LSA its comp cams XFI cam and im using it matched with some ported heads. im looking to hit 380 hp with this setup.. think its possible?

with that low of a duration at 113 LSA, your torque is going to take a hit in the lower rpms. Your peak should be in the high 300's for hp, but again the gain may be partially off set by the loss.