[alanmay0]

No that is not my car that is a car on youtube that a guy is showing what can can cause the pontiac to overheat. I was just asking is those black rubber things are needed in the water pump. I have never used them, or knew they existed, until seeing that youtube video. The car does not puke water when I stop. I do take the temp reading with the laser gun and it is 245 plus degrees. I have not yet cut the oil filter open but was getting ready to but decided to get the temp reading of the center exhaust manifold when it hits 220 degrees as another on this site wanted to know. Well I started the engine and was letting it warm up. The temp at the thermostat housing was reading about 135 degrees so I was going to take the radiator cap off to see when the stat opened and if the water was flowing. well when I gently began lifting the radiator cap when the engine was only showing 135 degrees it nearly blew off with force in the radiator. So lots of anti freeze came bursting out but I was lucky enough to get the cap on before it all came out. Cant understand why the radiator would be filled with pressure or hot anti freeze when the thermostat had not yet opened. Any one have any ideals??
thanks again

[68WarDog]

What pulleys system are you running? Hopefully it's not one of those slow water 6" crank pulley, coupled that with a 8" water pump pulley.

[alanmay0]

it is a 8" water pully with a 7" crank pully

[Half-Inch Stud]

Originally Posted by alanmay0

it is a 8" water pully with a 7" crank pully

Not thee problem, but smaller water pump pulley could help.