India will chase 349 for victory on the final day of the fourth Test after Australia declared before the start of play at the SCG on Saturday.

Murali Vijay and KL Rahul will open the batting for the visitors at the start of day five as they seek their first Test win in the final match of this best-of-four series after Australia closed their second innings at 6-251.

Australia took an unassailable 2-0 lead in the Border-Gavaskar trophy into the SCG.

Nathan Lyon looms as the key figure for the Australians on a pitch that began to show wear on day four.