Intake cooling lines

How beneficial would it be to run -8 lines from the water pump to the back of the intake on a filled, aluminum headed drag motor? I was told it would help cooling considerably? Thoughts?

460Dave wrote:How beneficial would it be to run -8 lines from the water pump to the back of the intake on a filled, aluminum headed drag motor?  I was told it would help cooling considerably?  Thoughts?

It would be too big unless you were to continuously change the water. It would be beneficial to allow steam bubbles to escape at that point so only a -4 would be necessary to help.

EDIT: Not from the water pump as that would allow extra colder water to bypass the block which is going to need more cooling, not the heads.
The lines just go to the thermostat housing.

  

It was explained that the lines ran from each side of the water pump (electric) to a fitting that went through the intake at the back of the head. This allowed water to flow into the back of each head directly from the water pump. It was all part of the closed system, not some sort of vent.

460Dave wrote:It was explained that the lines ran from each side of the water pump (electric) to a fitting that went through the intake at the back of the head.  This allowed water to flow into the back of each head directly from the water pump.  It was all part of the closed system, not some sort of vent.

I know what you were referring to and it is NOT good for a almost totally filled block which gets much hotter than a normal volume water jacketed block.
If the block is filled "right to the top" then you have no choice but, to go that way.

The other is a CLOSED system, also ... but, is a cylinder head by-pass so more coolant runs through the top of a mostly filled block..

I did some searching and looked at all the pictures of engines I could find on this site and didn't see anyone doing this. I only bring it up because a reputable engine builder made that recommendation to me and this is my first "filled block". I thought I would get some more info before I jumped the gun. Common sense tells me that it might put cooler water into the back of the heads. Experience tells me that it might cause more problems than it helps. I was just wondering.

460Dave wrote:I did some searching and looked at all the pictures of engines I could find on this site and didn't see anyone doing this.  I only bring it up because a reputable engine builder made that recommendation to me and this is my first "filled block".  I thought I would get some more info before I jumped the gun.  Common sense tells me that it might put cooler water into the back of the heads.  Experience tells me that it might cause more problems than it helps.  I was just wondering.

Your "reputable" engine builder told you that so, do whatever you feel comfortable with doing.
I have no intention of trying to sway your thoughts ... just telling you what works and what doesn't work ... which I thought was what you asked.

Actually, "single pass" cooling works best on a "filled" block with any amount of filling.

for your help

Randy knows his sh€€t. Feel comfortable what he says

That's why I came here to ask. There are several on here that I have come to respect. I figure the only dumb question is the one not asked. But, sometimes my written questions may not come across the way I am thinking.

bigblockfox468 wrote:Randy knows his sh€€t. Feel comfortable what he says

Exactly true,Some peple that have never met Randy Malik take him the wrong way w/some of his uncut keyboard comments or answers.But,he is just stating facts,and believe me,he is a sharp cookie.

And as far as asking a so called "dumb question".We that are still willing too learn from others w/o letting pride get in the way,will ask one now and then,and learn from it.