Running Rough

[mopar]

Hi There!

I have just bought a '73 280 and i would like to do her up a bit. but she is running a bit rough and I am sure its something simple?

I spent today having a look and i changed the points and plugs and did the timing but it didn't really help much.

It idles roughly but it revs nice and smoothly in neutral or park, then when you go for a drive it just doesnt want to go consistently, everytime you step fully on the accelerator it will surge and then nothing. consequently when on a flat or incline i have to basically pump the accelerator like a drummer on a bass pedal to move along. The car revs fine out of gear so.. (not that i know anything) i assume that the carby is working well enough? as i mentioned i did the timing and plugs... etc, could this possibly be a vacuum problem?

any help would be appreciated as i really want to make it look nice but this would seem a waste of time if i can't get her running nice

Thanks