Block manifold and water pump after heater delete?

[ratty69]

Originally Posted by garyd1961

There is no water pump bypass on a vortec motor or motor with vortec heads or a lot of after market heads either. There is a place on the block for the bypass but it doesn't go any where , it dead ends.

So if I understand this, the bypass hole exists in all blocks but only in pre-vortec heads. How about laying a pre-vortec gasket on a vortec head and drilling the missing hole?

Thinking about upgrading to vortecs in the future so this is good to know...