Just put a new engine in my car so I'm possibly missing stuff but is there an oring on the water pump near the heater core? it starts to leak in that area when I start the car.

 

LOL, can we get a clue what you are working one? Or do you want answers for every year and engine options?

 

yeah sorry I thought it posted what my car was with every post I made, 2002 Camaro v6, used the newer water pump on the series III engine don't think that matters tho.

 

heater core is in the dash water pump is at the front of the engine. heater hose? is the coolant coming out at the front of the engine?

 

There is a common issue with the orings on the heater hoses and the plastic ends cracking. That is a disconnintured hose, there are several fixs including metal ends availble from the aftermarket that let you make your own ends.