1954 GMC470 has the tank above the radiator. Not exactly sure what the purpose is. When I started it up it was steaming out of the bottom opening because the plastic acorn was cracked. Do I replace the cap or bypass the tank?

Thanks
Matt
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1950 GMC 100

1954 GMC 470

1954 Chevy 3100 Hydramatic
In the Stovebolt Gallery



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1957 Ford 850 Tractor (video)