plugs, wires, rotor..
severe plenum leak (lean and/or burning oil) are you fouling plugs ?
crank pos sensor, cam postion sensor, throttle position sensor.
o2 sensor (causing too lean or too rich). likely has more influence when fully warmed up and in closed loop mode. this might be your problem.
weak fuel pressure or stopped up fuel rail. check pressure.
cracked head - do a compression check.
01 1500 Reg Cab 4wd 5.2 auto 3.55 285/75/16 steps tow hooks sc3815 180 3923 trans cooler filter posilok powertrax (removed) timbren britebox pioneer head rockford amp speaker cobra cb firestick hughes plenum water pump timing chain oil pump rear main hub bearings brakes shocks cracked dash cad bushings seals ujoints trackbar tcase Robert Griffin Trans