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**tdangle** · 09-08-2021, 02:13 PM

My 350 with the air running in 100 degree heat just barely gets to 1/2 way into the operating range when idling for a while, such as a drive thru. I have a 3 core aluminum radiator, clutch fan and sealed all the gaps around the shroud to the radiator. That made the difference. The thermostat only sets the minimum operating temp.

09-08-2021, 02:13 PM	#39
tdangle Senior Member Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,209	Re: 350 Heating Up at Stops My 350 with the air running in 100 degree heat just barely gets to 1/2 way into the operating range when idling for a while, such as a drive thru. I have a 3 core aluminum radiator, clutch fan and sealed all the gaps around the shroud to the radiator. That made the difference. The thermostat only sets the minimum operating temp. __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC