Australia will look to level the series at 2-2 in the final Test starting Thursday in Ahmedabad after they bounced back from two losses to win the third Test on a viciously turning pitch.
"It's just playing what's in front of us really, obviously the scores haven't been big throughout this whole series. India scored 400 in that first Test match and Rohit got 100 and 400 proved to be way too many," Smith told reporters.
"This wicket may be a little bit different. Perhaps it may not spin as much from the first ball or the first day but I do think it will spin as the game goes on. So yeah, there might be opportunities for bigger totals on this wicket."
Smith was unsure of which pitch the crunch final Test would be played on after the curators kept two tracks covered at the world's biggest cricket stadium.
But doubts for the visitors cleared as the day progressed on a hot afternoon in Ahmedabad.
"Yeah rocked up today and there was only one covered so yeah looks like they have chosen," said Smith.
"Looks like probably of the four wickets we've seen so far, potentially the flattest on day one. Having said that, it's I think 38 degrees out there at the moment, it's pretty hot. Looks like it'll dry out as the day goes on."
Smith, standing in as captain in place of Pat Cummins (29), had earlier said he could not recall ever having been in this situation so close to the start of a Test.
India have long been accused of preparing pitches to favour their spinners. The International Cricket Council ruled that the surface in the third Test in Indore - won by Australia - was "poor".
Three spinners again
The tourists switched to a spin-heavy team selection from the second Test in New Delhi and handed India a nine-wicket loss in Indore in just over two days.
Smith strongly hinted that Australia would play the spin trio of Nathan Lyon (35), Matthew Kuhnemann (26) and Todd Murphy (22) again, praising the "variation" that each has been able to produce.
Lyon, an off-spinner, took eight wickets to dismiss India for 163 in their second innings on a pitch that turned from day one in the third Test.
Newcomer Murphy has been economical and got Virat Kohli out three times.
"(We have) had faith in what we're trying to do and it's good that we are able to show that we can play with three spinners and win," Smith said.
"They are all different and all have good knowledge of the game (and a) good understanding of what they are trying to do. It's been great to be able to play spinners and show that we can do it effectively."
Victory in the third Test was only Australia's second in India since 2004 and Smith believes another to level the series would be an ideal finish.
"For any touring team to come here and win two Test matches will be a huge achievement," said Smith.
"Unfortunately we weren't able to do it earlier in the series to give ourselves a chance to win."
Smith relishing crowd at huge stadium
Smith said it would be "pretty special" to play in front of what promises to be a bumper crowd at the world's largest cricket stadium in India.
The 132,000-capacity Narendra Modi Stadium in Ahmedabad will host the Test between India and Australia from Thursday.
An unidentified source at the stadium told AFP that more than 100,000 people were expected for the first day of play, a number also widely cited by Australian media.
The current world-record attendance for a day of Test cricket is the more than 91,000 who packed the Melbourne Cricket Ground for an Ashes Test between the hosts and England in 2013.
The stadium source said 20,000 of the tickets were regular sales to fans and the other 80,000 were snapped up by the ruling Bharatiya Janata Party of Prime Minister Narendra Modi.
"It's a good chance it will be a pretty cool atmosphere," said Smith.
"Lot of guys haven't seen the stadium before, they all walked in today and it's huge - it holds 130,000 - if we get somewhere up around that number, it will be unbelievable, the atmosphere.
"We know how loud some of these grounds are over here in India. It will be a really great vibe and atmosphere to be able to play in front of them."
Modi will attend on Thursday alongside his Australian counterpart Anthony Albanese, in what is widely seen as a show of force in his home state of Gujarat.
"I think it is a big day for India here and Australia with the prime minister as well, so for us we will get the formalities out of the way and then when that's done, it's about focusing on our game. Simple as that," added Smith.
"We love playing in front of plenty of people and if the 100,000-plus turn up tomorrow it will be pretty loud and pretty special for everyone to witness."
