Re: Aluminum radiator ?
My '41 came with a truck radiator wedged into place. It was just a matter of time for it to wear through where the top tank was wedged between the top of the fenders. But it never overheated.
Replaced it with a Champion aluminum radiator rated at 500 hp and it will overheat at idle, even after putting on a (partial) shroud and a spacer to move the fan closer to the radiator. I can not bring myself to put an electric fan on it, but that is what is required to move enough air through that radiator at idle.
If you can restore the stock radiator, I think you will be better off.
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