340 Duster running hot

Skeven33 said

built 340 11.5:1, edelbrock aluminum heads, march pulleys,jegs high flow water pump, 180 thermostat. stock 340 radiator freshly redone.
electric fan no shroud.

Got through break in but car heats within five to ten minutes over 200 degrees. Looking at an aluminum radiator and trying to decide whether it will help my heating issue and also trying to decide between a single and dual pass. any help or information would be appreciated.

Scott

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Probably cool better with a stock water pump on the street. Compression is high if you are hammering on it with just pump gas. Make sure you are not lean.

High compression and running lean with pump gas that doesn't match your engine need is bad.

Remember.... The faster your coolant moves through your engine the less time it has to absorb heat. The less time it spends in the radiator the less time it has to dissipate that heat.

A fan shroud is a very important part of a cooling system... funny how people will spend out the butt on a radiator, fan, water pump..... but not have a shroud....