Mopar Muscle Association UK

Are you sure it is oil and not overfuelling on full throttle?

depends what's wrong, if you pour some atf down the carb (not too mich or you'll oil the plugs ) then that will decarbonise the heads and clean up the valves.

there's a few additives you can get to clean the piston rings and bores, if it's only on full throttle chances are it's only a sticky ring.

and if all else fails, then put up with it!

I've heard Nicorette patches do a good job

OK OK...could be as simple as valve stem seals, pretty easy to change....otherwise poss rings.

I thought the stem seals would affect it more on the over-run ?

What colour is the smoke - Grey/White or soot black?

Stem seals on fire oop, rings under power...