FWIW: Taken from the NCRS Discussion Board
Do L46 and L79 use same cam or not?
They do not. The L-79 cam was GM #3863151. The L-46 cam is GM #3896962. The latter was also used for all L-82. The 3896962 is still available from GM, 50 years after it was originally released.
In fact, it's still used in some GM crate engines with flat tappet cams. Larry