318 Build on a small budget

Hey there,
I need a motor for my 67 Dart and it came with 3 318s, 2 were junk but the last one is a police interceptor 318 from a diplomat (not sure on the year) so the setup would be that 318 with a 727. Im looking for suggestions on how to get a little more power cheaply. I have a 4 bbl intake for it and headers and a Holly 600cfm 4 bbl. otherwise its a stock police interceptor 318. The only other think I was thinking was a Cam but i have no idea what size?

Any help on the Cam size and any other suggestions would be great!

Thanks

Welcome from California.

RustyRatRod's Guide To Hot Rod Bliss

my Low dollar 318 hop-up project

"low dollar 318 hop up" - mission accomplished

Consider suspension work first, including brakes and tires. You need to be able to control what you have, and what you plan.

Second, gearing and trans, to be able to handle what your third priority will put out.

Third engine.

Fourth, body and paint.