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What is normal operating temp for a 454cid boat

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What is normal operating temp for a 454cid boat

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Old 05-09-2004, 11:29 AM
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David Haag
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Default What is normal operating temp for a 454cid boat
It runs about 150 degrees.
 
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Old 05-09-2004, 11:39 AM
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My 454 Mag MPI runs about 165-170. I think carb motors run a little cooler.
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Old 05-09-2004, 12:35 PM
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my 30 over 454Mag runs 165 170 like Dave. Carb motor, maybe 180 if I run it hard a while.
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Old 05-09-2004, 12:46 PM
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Maybe it does get a little hotter than 150, I will pay closer attention next time.
 
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Old 05-09-2004, 12:56 PM
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I wouldn't sweat it, running HOT is the enemy. I bet your gauge is a little stingy. Got good water out the exhaust, right?
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Old 05-09-2004, 01:15 PM
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Yes, plenty of water coming out the exhaust. I have heard the gauges are not all that accurate.
 
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Old 05-09-2004, 11:18 PM
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Carbed engines have a 140* T-stat. My 454 alway ran 145-155 on the guage.
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Old 05-09-2004, 11:33 PM
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this motor a 2000 8.2 EFI Volvo takes a 140 too
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