Trouble tuning 340.

The guys responding here have hundreds of years of experience. Post some pics of the valve train, engine compartment, distributor.

Do you have a timing light, and know how to use it?

I’ll tell ya, the 318 in some broke junk 73 Dart swinger I got a few months ago just got started for the first time since I got it. It sounding like **** turning over, and would only sputter and pop a little, the distributor was way retarded and in 180 out ( still is, #1 is facing the fire wall, changed the wire order.) after messing with it all after noon and wiring in a MSD box, all hot wired, it runs, like ****....:lol:.

So the point is, be a detailed as you can in describing your issue and post some pics...
The guys responding here have hundreds of years of experience. Post some pics of the valve train, engine compartment, distributor.

Do you have a timing light, and know how to use it?

I’ll tell ya, the 318 in some broke junk 73 Dart swinger I got a few months ago just got started for the first time since I got it. It sounding like **** turning over, and would only sputter and pop a little, the distributor was way retarded and in 180 out ( still is, #1 is facing the fire wall, changed the wire order.) after messing with it all after noon and wiring in a MSD box, all hot wired, it runs, like ****....:lol:.

So the point is, be a detailed as you can in describing your issue and post some pics...
Sorry, I accidentally posted my reply in the middle of your previous comment.