440 overheating at idle

Oldmanmopar said
What carburetor are you running. Could be it needs more fuel on the idle circuit.

Bewy said
Water pump should be 10-15% over driven, relative to the crank. See www.stewart components.com for more info.

With a lumpy cam, you need a LOOOOOOOT of timing at idle, as much as 50*, but 25-40* is more common. This keeps the engine cooler because you are making it more efficient...& not work as hard. When the engine has to 'work', it produces more heat.

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That makes sense and is on the check list. I had a guy set my valve lash and he said I didn’t have a timing pointer on the car. (I am on the hunt for one as we speak so I can check the timing). I bought the cooling system from a local performance shop and they recommended the fan because it pulls huge amounts of air (Flex-tite maybe).