will this cam fit it 318

i have a stock 86 dodge 318 and want to put a nice cam in. Its comp cams Hydraulic Flat Tappet Cam & Lifter Kit with Lift: .545''/.545'' Duration: 285°/297° RPM Range: 2500-6500 and want to know if i need to put nice valves in or will it work with stock valves??

here is the cam - http://www.jegs.com/i/Comp+Cams/249/CL20-228-4/10002/-1

This cam in a stock 318 won't work well. The lift is more than likely too much on stock heads, which I think is usually around .500" at the max before you start running into problems with valve guide clearance. You'd definitely need a torque converter, I'm guessing at least 3.5 to 4k to get the car moving...it'll be really slow out of the hole otherwise, much slower than it would be with a stock cam and converter.

A camshaft should be part of a complete engine build and be one of the last components chosen for the engine.

You have a few options when picking a cam:
1. You can get the absolute biggest cam that you can cram into the engine. If you go this route, you'll definitely be disappointed. The biggest cam available is rarely going to be the best.
2. You can gather up information on your combo and post it here. Members will weigh in and give you some recommendations.
3. Same as above, but you contact a cam manufacturer and they'll make recommendations. Unless you're dead-set on a specific cam manufacturer, you can consult how ever many different manufacturers, but I'm guessing that the cam specs they'll suggest will be pretty close.

Let's get some more info on your complete package. Tell us what you can about the car (make, model, weight), engine (displacement, induction, exhaust), transmission (auto or manual, converter), rear gear, and what type of cam you want (flat or roller, solid or hydraulic).

With the limited info you've given us, I'd say that you'll want a much smaller cam than the one posted.