I think my stroked 440 runs a bit too warm due to an underdrive pulley. I have a 26" aluminum radiator, 160 deg. stat and a Milodon high vol pump. I swapped to an underdrive pulley mostly because I have an older Fluidampr that puts a stock pulley out further than the wp and alternator pulleys and the March underdrive is made to compensate for this dampener offset. The newer Fluidampr's have a recessed face to resolve this issue. At night with the headlights on at idle charging is marginal at best. I'm still looking for a stock diameter pulley with the offset that this March pulley has to improve cooling and charging at idle. Of course the pulley change was done at the same time that I swapped a mild 440 for a stroker so that is a huge variable. That's my experience, yours may vary.