ok i have a 97 firebird v6 3.8 it spits water out the radiator and it wont hold water and it skips the temp gets really hot and i can see a leak behind the waterpump on what i believe is the intake manifold ive been told its a blown head but theres no water in the oil i really need help plz help me

any chance it could be that short tube connecting the intake to the tensioner?

If your bubbling out the radiator most likely head gasket. Blown head gasket doesn't always put water in oil. My guess is you had a coolant leak that went unnoticed long enough to heat up the heads to point of gasket failure. Not the worst job to change head gaskets and check for cracks and warpage.

would k&w block seal fix it right up? or evev temporarily?

and sometime it wont spit out the radiator only whenever it gets really hot but when its cool and i just crank it up it sucks the water in

Definitely head/head gasket. Doubtful a sealer would work at this point.