Cam timing - help me out here fellas!

[Eric Mumford <mumford@rpi.edu>]

Okay listers, I screwed up my cam timing and I need some help on how to
do it right.

Let's start off with the basics - I have a '79 1500 block, I have new
sprockets with _NO_ timing marks on them, and I have a Piper 270 cam
that I've installed.  

My question is, after setting the crank so cylinders 1 and 4 are at TDC,
how do I position the cam and slip the chain on?  How do I know where to
rotate it to?  I can rotate the cam and watch the valves open and close,
but I don't know what valve behavior to watch for as I rotate the cam.  

I appreciate any help you all can offer.

thanks,
eric

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