i made a post a while back about this http://www.rcuniverse.com/forum/m_5943725/tm.htm

i had a hot bodies .26 like to run in the 370-380's and it would sit there, no air leak tunes was rich, everything was fine, it just liked to run real hot, lasted about 6-7gallons of fuel with those temps. not for my traxxas 2.5 well over 400, to the point the carb melted closed.

my new k4.6 has been in the 330's, and as high as 383. but now i got her tamed with sealed, and re tuned she is puring at 240.