1988 chevy 1500 5.7 not running right please help

[ChevHead77]

ok so i bought this truck about a week ago and have been reading this site ever since and love it... my truck is a 2wd automatic 5.7 i have replaced the plugs wire cap and button o2 sensor top radiator hose.... all yeah its a 1988 sorry... when i baby the truck it seems to run fine sometimes when i gas it it bogs out and the check engine light comes on and the truck has no power if i stop shut the truck off and restart it it seems to run ok again till i hit the gas about 1/2 way down then the same problem.. the egr valve is pluged wondering if this could cause the problem i also removed the cat on it b/c i thought that was the problem sorry i dont know the ses light codes yet not til sunday thanks n e help would be greatly appericated thanks justin i belive the truck is all stock also