318 Cam

Plymouth Power said

I was wondering what camshaft to go with, I have a 1973 318 all original with less than 70,000 miles on it. It will have a 4bbl on it and I am planning to put it into my Duster it has the (guessing) 2.76 gears in the back, in a (fact) 7.25. I want something that will also be able to keep up with the later addition of a Six-Barrel and an 8.75 with 3.23's or 3.55's haven't decided yet. I want something that will give me power and torque, things like fuel economy and cost don't matter. Thanks for all of your help.

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Of all the things that you mention here, the cam is probably the least expensive and pretty easy to change out later.
When I first put my Duster together it had a 318, 2.76 gears in a 7.25 and the cam I chose was an Edelbrock Performer-Plus # 2177, a very mild cam and have been very happy with it. Decent low end and mileage, but the idle is pretty meek and it was inexpensive. I now have 3.55s in an 8.25 and I'm going to change the cam when I rebuild the engine this fall.

What I'm really trying to say is, that you should choose the best cam for the set up you have now and you'll enjoy driving the car more than if you go with a wilder grind that is not well suited to your gearing, heads or carburetion. Just my $.02.