
Heater Hose Size & Flow Direction | Team Chevelle
2012/12/1· 5/8 Small hose. From intake to heater core----heater feed. 3/4 large hose From heater core to water pump (or radiator fitting if equipped) I have no idea why there are 2 different sizes. Bryan''s toyz. 59 ElCamino 454/TKO 5spd-- (daddy) 66 ElCamino 3oh7/TKO 5spd (mousey) Almost done:yes: On the street now!!!:hurray: