318 running like crap

when i first started working on the car I drained the tank, changed fuel filter, the car was actually running pretty good until I changed spark plugs and wires. now I know that I have the timing out. need to start there I think? it sucks because I had it running pretty good but now that its cruise season its running like crap. Im not a very good mechanic just learning as I go. another think is that It will seem to idle and sound good in neutral in the garage but then when I go to drive it its real sluggish?