The article was posted by the user
Bobby_GT6262 in the 2013 super GT section, not by Japanese Samurai.
http://www.speedhunters.com/2013/11/...t500-in-detail
on page 2, is revealed the torque of the RV8K GT500 engine, 392Nm.
Actually I don't trust wikipedia, only TMG engineers know the real power output of the TS030 motor. I bet my 2 cents that only in the last 2 races, TMG used a full power engine setting. At Le Mans both toyota's could never be able to finish the race using the engine revving close to 10000rpm.