305 help

ok i have a 1992 Z28 with 305 tpi engine. its been down for a few years and now i want to fix it. when i parked it sounded like timing was out. so i changed the timing chain. and re-timed it. now it barely starts and when it does its rough.. real rough. still shoots gas out intake like its out of time. is my cam ground down or what?any hel[p be nice thanks

If it's shooting gas, out the intake you may very well have a broken timing set or valve trane issue (cam, lifter, springs, somewhere in there)

OR, excessive fual fressure.