Mystery 318 wants 30* initial timing?? Pinging hard

Here's the results of the compression test: done at 185 degrees F.
1 - 130, 2 - 125, 3 - 135, 4 - 140, 5 - 120, 6 - 130, 7 - 115, 8 - 150.

Right when I got it running lifters were clattering like hell. Guy had 3 different size hydraulic lifters in it and wrong pushrods. I bought some 273 rockers and New rods and installed them. New plugs came, installing them now, but my timing light just packed up...
Keep the good advice coming.