re: Found an example
Fluffy (shown below) was hatched in captivity and at 13 years of age was 310 Lbs and 24 ft long. So if I extrapolate for the 985 Lb snake I estimate over 41 years old. The oldest reliable age for a snake is 40 years, 3 mths, 14 days. So this snake would have been a good candidate for the record books if it's age were nailed down.