Finch, Warner and Labuschagne struck fifties to give Australia a fighting total.
New Zealand welcome back pace trio for Australia ODI series.
Australia named an unchanged squad on Wednesday for next month one-day international home series against New Zealand.
David Warner struck an imperious hundred before Nathan Lyon took apart the New Zealand batting in less that two sessions to sweep the three-match Test series.
New Zealand were bowled out for 251 with Lyon returning five.
Earlier, Marnus Labuschagne scores maiden double-hundred propels Australia to 454.
Labuschagne ton as Australia take advantage of weakened Kiwis.
Australia defeated New Zealand by 247 runs on the fourth day of the second Test on Sunday here at MCG.
Earlier, Cummins fifer bundles out New Zealand for 148 in reply to Australian innings total of 467.
Australia in commanding position against New Zealand on day two.