Former drag racing champion Brett Stevens..... Guilty

Australian drag racing legend Brett Stevens is facing a lengthy jail term after he was convicted of producing and trafficking ecstasy.

The 50-year-old was found guilty of both offences in the Brisbane Supreme Court on Wednesday after a six-week trial.

The jury heard that between 2007 and 2009, the veteran racer masterminded a $1.2 million operation that produced up to 100,000 pills per week.

He met a key associate at Queensland's Willowbank Raceway.

Stevens, who won three national drag racing titles, was the operation's "puppet master" who deliberately distanced himself from the drug network in a bid to keep his hands clean, the crown said.

He and associates were recorded discussing drugs in code.

Detectives collected 800 recorded interactions during a multi-agency operation over almost two years.

They identified $1.2 million in income that couldn't be attributed to any source, and arrested Stevens in February 2009.

He pleaded not guilty to trafficking, producing and supplying dangerous drugs at the start of his trial in July.

The jury retired on Monday and took two days to find Stevens guilty of trafficking and producing, and not guilty of supplying.

Stevens' bail was revoked and he is due to be sentenced on November 20.