[FONT="]My 2 cents is that the size of the top tank is less relevant to cooling efficiency than the entire system and how it integrates for cooling - i.e. cleanliness of block passages, efficiency/condition of the water pumps, thermostat selection, radiator condition, fan set up etc. I run a small tank in my April 35 Coupe with no cooling issues even with 284 cu and a blower.
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