Recently picked up a free 350sbc 2 bolt from PA. Started stripping it with the intention of getting it magnafluxed and if all checks out, build it for street/strip. Not critical as I plan on replacing it with a better cam anyway, but i would like to know what was in it. Only marks are CWC below the gear for the distributor, a raised + sign, "838", "GM" and what looks like "OCO" but I cant make it out well. If anyone knows about these things please let me know, it would be much appreciated.