Oil or carbon fouled plugs?
If carbon then is ignition problem or carb is dumping to much gas.
Any exhaust smoke? If so what color.
Really should take a vacuum reading then choose the power valve.
Plug wires? New and not touching the exhaust anywhere?


72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
Desert Mopar Metal
Grand Jct. CO
970-261-7039
http://moparmark.com/
motormangj@gmail.com