What hose is going to the water pump 3/4 or 5/8.Does it make any difference? Engine is 350.Thanks like always

The huge hose at the bottom corner of the radiator is the one your lookin for. If you dont mind me asking why do you need to know this?

i just did my heater hoses. i believe 3/4 goes to the water pump and 5/8 to the intake. it does make a difference, can't remember the reason, read it in a post not too long ago.

Five-eighth inch hose goes to intake, this is the heater core supply. Three-fourth inch hose goes to the water pump, this is the heater core return.

Czech Republic, I can't imagine an older Camaro there still. Parts and getting them must be difficult.