I start looking to cool it down if it gets 230°+.
210° on the highway running 3500+ rpm isn't uncommon for my car. It cools down the slower I go usually, unless I'm stuck in stop and go for a while. Probably needs more water pump, but the $600 one from Meziere is my only option now.
Have a BIG radiator and a fan that moves a LOT of air on it.
I got it up to 255° one time when I first put the hemi in the car...didn't hurt a thing.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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