Tourists must show all their ability, ambition and mental toughness to beat Pakistan and remain at the summit.
Despite topping the rankings after a memorable 12 months, Strauss thinks his side will have to improve if they are to beat Pakistan.
Playing in front of the prime ministers of both countries, India beat Pakistan by 29 runs.
It included the first match and the final which was won by India beating Pakistan.
India won the 12-nation tournament after beating Pakistan in the final.
It was a four day test, India required just three days to beat Pakistan by an innins and 70 runs.
Australia went on to beat Pakistan in the final on 20 June.
Australia won the tournament, beating Pakistan in the final by 25 runs.
In the final, England comfortably beat Pakistan with 9.5 overs to spare.
In the 1964 Games he scored Australia's only two goals allowing his team to beat Pakistan (2-1) for the first time.