Engine running rough

[73 rallye]

Hoping for some helpfull opinions here. My 383 was running good all day I pulled into the driveway and parked it for about 4 hrs and when I went back out to pull it into the garage it started running like someone had pulled half the spark plug wires off. I thought maybe fuel pump and filter but they are fine. It has always run like a top so I am at a loss. Carburator or electrical next? Whats my next best move?

 

[R/T4speedconv]

Well I would check choke and the carb first-Any chance that a animal has nibbled on a vacuum line or something?

 

[Chryco Psycho]

if the carb boiled it cold have fouled plugs , I would pull them & have a look first

 

[Woodsman]

Could be fouled plugs, if it smooths out some when it runs an warms up then likly plugs.