IF the heads and the block is drilled for the coolant bypass...
...don't you have to run a TBI water pump, because the Vortec pump doesn't cover the bypass opening in the block?
You'd either have to thread the opening in the block and cram a plug into it--flush--so there's no way it can interfere with the water pump mounting; or you'd have to leave the head un-drilled so there's no water in the block bypass passage to begin with.
This is the block that's in my truck now, with a TBI water pump and non-Vortec heads. I drilled the bypass hole and also the two bolt holes for the timing cover. (No photo of the timing cover holes after drilling and tapping, though.) You can see where the Vortec water pump doesn't cover the bypass opening.
...don't you have to run a TBI water pump, because the Vortec pump doesn't cover the bypass opening in the block?
You must be registered for see images attach
You must be registered for see images attach
You'd either have to thread the opening in the block and cram a plug into it--flush--so there's no way it can interfere with the water pump mounting; or you'd have to leave the head un-drilled so there's no water in the block bypass passage to begin with.
This is the block that's in my truck now, with a TBI water pump and non-Vortec heads. I drilled the bypass hole and also the two bolt holes for the timing cover. (No photo of the timing cover holes after drilling and tapping, though.) You can see where the Vortec water pump doesn't cover the bypass opening.
You must be registered for see images attach