im hooking up the coolant lines from the water pipe on the back of the block to manifold.... i have one neck coming off the pipe that goes to the iacv (idle air control valve) from the iacv i have a neck that comes out... and goes to throttlebodie...and the throttle bodie has a neck coming out the front...where does this go... doesnt it return back into the cooling system... im not sure...can i just block it off or what all help is apprecitated

 

marcus y r u doing it thats way>>? if i was u i would T in to the throttle body for a feed and then but the drain in that bolt on the front of the block. just take the bolt out and tap it. need any help let me know