James went 11-of-14 from the field while Chris Bosh and Ray Allen combined for 29 points as the Heat extended the second-longest winning streak in NBA history despite the absence of all-star guard Dwyane Wade.
Wade sat out with the contest with a sore right knee.
The latest victory brought the Heat one game closer to matching the 1971-72 Los Angeles Lakers' all-time NBA record of 33 straight wins.
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