It must be a Big Block thing
us guys with little itty-bitty 289-347 small blocks never have the heat that comes boiling out like (As Karlos said) from 800lbs lumps of BB's. The last part of my drive is 4miles (@35mph, with lots of 15mph corners) with a dead end, so just right for some hard 2-3 gear pulls, you know just to blow out any Cob-Webs that could be still in the motor
Cheers TommyRot.