Cam number out of my L-78 nova

[CDNL-78]

Took my motor apart to freshen it up, and have a look at everything. The camshaft I don't believe is correct. The numbers on the end of the stick are 13 20 89, and then a 996. Can anybody help out and tell me the specs on this cam and what make?? I won't be using it again, as I will be going with a repalcement comp cam, but would like to compare it to the one going back in.
Turns out the motor is .30 over, been line honed at one time, the caps where cut also, and has been balanced. The pistons are TRW with a marking on the dome, L2242 is what I think the numbers are. Are these correct replacements?? We will be reusing the pistons, as they look fine.
This car still had what looked like the original clutch in it. It had funny factory chalk marks on it. Thanks for your input in advance guys.