318 LA cam question for the mopar gear heads!
Be prepared to get a lot of response to a simple camshaft question. As 70Duster mentioned there are many choices of cams for a mild 318. Probably the most common cam is the Comp 268H Part number 20-212-2. Here's a link:
http://www.summitracing.com/parts/cca-20-212-2/overview/make/dodge
The reason it's so popular is that it makes good power, torque and doesn't require much for special valve springs, rockers, or pushrods. With a 4 barrell, intake, and headers or a nice dual exhaust you can have a fun 318 without breaking the bank.