I just bought my first mopar. It's a 1973 Duster and it has 318 engine.
What are the main differences between the 1972 318 (230hp) and the 1973 318 (150hp)?
Which parts do i need to get the 230hp out of the 1973 318?
The U.S. government "changed " horse power ratings from SAE "gross" flywheel rating ,(1972-1973 -wish..) to "net " rear wheel horsepower ratings ( think chassis dyno)..
A better idea: Is it completely stock?, or have "goodies " been added ( headers,aluminum intake can, four barrel carb) ? This is needed to know... I wouldn't personally worry about factory h.p. ratings,unless going completely O.E.M. stock.(just my opinion).