Lillee turned informant at the request of Indian bowling coach Venkatesh Prasad and provided intelligence on the mysterious Perth winds which foxed Australia.
As the Fremantle Doctor blew, India's unheralded pace attack got the ball to swing madly while Australia's quicks floundered and could not decide what end each should have been bowling from.
Fremantle Doctor, a sea breeze which sweeps in to WACA ground along the Swan River, helps pacemen to swing the ball on an otherwise hard wicket.
Prasad last night revealed that Lillee, undoubtedly Australia's greatest fast bowler ever, had provided crucial information.
"He told me about the winds and how to use them," The Daily Telegraph quoted Prasad, as saying.
"I worked under Dennis (at the MRF Pace Foundation in India) and he is a very, very good friend of mine.
"Dennis told me about the winds, but our pace bowlers had to go out there and do the job," said Prasad, who believes India's fast bowlers are now the best in business.