I have a question, how does the water circulate in a GMC 270 or 302 engine? I'm putting a turbo on a 270 and its water cooled. So does the water flow through the block then up through the head and on into the radiator through the thermostat? I need to catch the water, thinking at the rear of the head (pipe plug on top at the rear) plumb through the turbo then out to the water neck where the temp sender is below the thermostat. I'm wondering if that will have good circulation? Or should one go in above the thermostat? Also my wastegate is water cooled but its minimal.
Jay D.
Last edited by Gdads51; 03/15/2025 9:48 PM. Reason: add detail to title
