dies after short distance

1991 regal. some newer injecters and fuel filter wihin last 30k. new fuel pump relay switch. it starts and idles revs up all day. go to drive it and it will die after bout a half mile or so. some times it will stay running, but it acts like its not geting fuel. when it dies it starts hard and kinda idles. on my test drive when i got it started i floored it and it went for a couple seconds then petered out but was still kinda running. i made it into my shop, put it in park and it idled fine reved up, held rpms... it also runs a litle rough when idleing in drive like some kind of vacum leek. i know it needs intake and head gaskets, but im trying to figure this one out first. thanks