I am having an overheating problem with my 67 Camaro. The engine is a stock 350 out of a 95 Tahoe. with Vortec heads & a vortec Quadra jet intake. the radiator is new & for a big block 396. the water pump is also new but is for a 67 Camaro. there is no thermostat installed. after the engine runs for about 10-15 minutes it overheats. The upper hose gets hot but the lower hose stays cool. The heater core is currently bypassed & that hose gets hot. I have disconnected the upper hose & run the engine & have good flow.
My thought is that either the pump has to be changed to a "95" pump to match the motor. Or I've used the wrong head gaskets. The gaskets were part of a complete set for a 67 Camaro which I ordered through Jegs.
Thanks for any Ideas anyone might have