Help with new crate engine overheating
I recently purchased an ATK 383 stroker long block. I installed in with all of the recommended parts (Weiand Intake, Quick Fuel carb, TCI stall converter), as well as replacing the radiator (Summit aluminum 3 row), 180 degree bypass thermostat, transmission cooler, headers, starter, radiator hoses, water pump. The heater was removed by the previous owner so the heater hose on the water pump is plugged and the heater hose fitting on the radiator is capped. The temp sensor is positioned to the left of the thermostat and the other coolant fitting on the other side of the thermostat is plugged. It starts up great, but after 3 minutes the temp shoots up and pukes out coolant. I figured it was probably just air trapped, so I let it cool down filled it up again. Then, same exact thing. So, I drilled two 1/8”
holes in the thermostat hoping that may purge some of the air out of the system, but that didn’t work. So, I ordered a new Edelbrock Victor series water pump and put it on today. Same exact thing. I watch the temp gauge and once it hits 180 degrees it shoots up, so I turn the engine off because I don’t want to blow a head gasket or cause any damage and then the radiator shoots coolant out all over. I’m at a loss. I know the thermostat is opening, both hoses are hot, there’s no sign of coolant in the oil or leaks anywhere. When I pressure test it, it holds pressure. What am I missing? I’m starting to get frustrated and discouraged because I have spent a lot of time and especially money on this and cannot figure this out. If anyone could help me out with this, I would greatly appreciate it. Thank you in advance!