my car doesnt overheat unless i haul ***. i have no thermostat in it. so would that affect anything. i have a new water pump and new clutch fan. as well as a 16" fan on top on the radiator and i have the 2 sleeve pulley on the alternator. but still it overheats. anyone have a clue?

 

good chances are that its water pump cavatation. bascily what that is, is the water pump spins so fast that it separates the water molecules and hence the water is not cirucalted through out the engine thus causing it to overheat. This normaly happens at VERY high rpm for extenend periods of time. good reason to get a underdrive pully