Aluminum head question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ratrod67 · 10-29-2003, 08:33 AM

Is there a difference in operating temperatures between cast iron heads and aluminum? I rebuilt a 454 for a 70 Monte Carlo and it's running about 210 compared to the 190 before the rebuild. I also installed a BeCool radiator, electric fans, Edelbrock water pump and March pullies. Everything seems to be fine just a difference in temp. I called and talked to March and asked about the pullies because the crank pully is a smaller diameter than the stock one and I was wondering if the coolant was passing through the system faster than the radiator could cool it down. They told me that the aluminun heads will run hotter than cast and that was probably the reason for the temp increase. Any truth to this?

10-29-2003, 08:33 AM	#1
ratrod67 Registered User Join Date: Sep 2002 Location: DFW Texas Posts: 2,269	Aluminum head question Is there a difference in operating temperatures between cast iron heads and aluminum? I rebuilt a 454 for a 70 Monte Carlo and it's running about 210 compared to the 190 before the rebuild. I also installed a BeCool radiator, electric fans, Edelbrock water pump and March pullies. Everything seems to be fine just a difference in temp. I called and talked to March and asked about the pullies because the crank pully is a smaller diameter than the stock one and I was wondering if the coolant was passing through the system faster than the radiator could cool it down. They told me that the aluminun heads will run hotter than cast and that was probably the reason for the temp increase. Any truth to this?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.