272 Captiva - Running Temp

SpeedracerSpeedracer Member Posts: 35 ✭✭
in Engine Discussions
Just wondering what everyone is seeing for an engine temp - 454 Mag MPI 
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  • Michael TMichael T Member Posts: 7,227 ✭✭✭✭✭
    Okay, I'm going waaay back in time here but the 454 I had - had a 160 degree T-Stat. At idle it would run 160 but if run hard would climb to maybe 170.  My 454 was carbed so the newer ones may be running a bit hotter.  If you are getting way lower temps you could ground your T-Stat to the block. If the temp jumps up then the continuity ring in the T Stat may be cr*pped.
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  • SpeedracerSpeedracer Member Posts: 35 ✭✭
    thanks - I am running just below 175 at idle and will climb slightly when I am cruising. 
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  • Michael TMichael T Member Posts: 7,227 ✭✭✭✭✭
    I think you're doing all right. My two 2014 Mercury 502 Magnums - catalysts -  run at about 175 degrees on plane normal under load 3/4+ fuel. full water, 1/2 waste and the usual cruising stuff. *Al would have the final word here if he's monitoring this thread.
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