Antifreeze leak question

[obesemustang]

a few weeks ago i noticed antifreeze dripping from under the truck crawled underneath and it looked like it was the water pump. My father and i then replaced the water pump. filled it back up ran a day with no leaks, i come out from church two days after we replaced the water pump and there was a puddle underneath the truck. i filled with antifreeze, and looked under the truck and saw the drip again. drove it home crawled underneath looked closer this time saw there was coolant coming behind the alternator bracket. replaced both heater hoses, still dripping. looked behind the alternator bracket filled with antifreeze then saw a small stream coming from a crack between what looks like the head and the lower intake manifold. is it the gasket or something else?

 

[RonD]

My 1994 got a leak in exactly the same place.

You need to drain coolant then remove upper intake and lower intake, replace intake gasket.

Where it is leaking is the coolant head crossover passage, intake carries coolant from one head to the other, this is also where t-stat housing is.

I think there is a bit of electrolysis happening there because of cast iron head and aluminum intake, I was not right on for changing coolant every two years so coolant PH got below 8 and I got a leak

 

[obesemustang]

ok thank you, wasn't sure it it was just a loose bolt