[tailz316]

i just replaced the head gasket and had a garage do the timing. the car will idle a lil rough but can't tune it in with the distributor. changed the spark plugs and wires, and a fuel filter. can not rev the engine with out it bogging out. but can slowly accelerate till 4k rpms but then drops to like 2500 rpms. or can hold it at 3k but drops to 2500rpms then goes back up to 3k rpms. any ideas?