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Re: vortec on a gen 1 small block questons.
Here are some pics of what I have been talking about, so some of you can better visualize it.
The first pic shows the thermostat bypass from the water pump boss up thru the deck surface of the block. I ran a piece of welding wire thru the passage.
The next pic shows a Vortec head which is missing the corresponding hole in the deck surface of the head. This is shown with the red circle.
The last pic shows a regular SB head (happens to be a TBI head) which does have the corresponding hole. This is indicated with the red arrow.
I do not know if this bypass passage is necessary or makes a difference, but I believe it deserves consideration.
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