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09-20-2012, 02:49 PM
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#1 |
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Registered User
Join Date: Jul 2004
Location: Lomita, Ca
Posts: 1,225
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Should all water passages on head match the engine block?
There is a very small opening like pencil eraser size on the front and back of my 350 heads that has to be for coolant to pass through. These two locations are non existant on the block. Should all the coolant ports that are on the heads be on the engine block, or are some not there? Does water flow through all the hole in the heads or just a select amoumt? Anyone have a diagram or picture of which one are used and not used if thats the case?
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09-20-2012, 05:01 PM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,712
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Re: Should all water passages on head match the engine block?
Thanks for the chuckle!!
Those are dowel locating holes!! To make sure the head is placed precisely where they belong. |
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09-20-2012, 05:18 PM
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#3 |
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Registered User
Join Date: Jul 2004
Location: Lomita, Ca
Posts: 1,225
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Re: Should all water passages on head match the engine block?
Haha.....they are not dowel pin holes.....in each head there two pencil sized openings that when air blows through, it blows through the other passages as well. These holes are not on my engine block though. The dowel pin holes are there as well and they are not the ones in question
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09-20-2012, 06:09 PM
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#4 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,712
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Re: Should all water passages on head match the engine block?
OK! Jokes on me!!
Are the holes also on the head gasket? |
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09-20-2012, 06:37 PM
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#5 |
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Senior Member
 
Join Date: Feb 2011
Location: Corona, CA
Posts: 1,842
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Re: Should all water passages on head match the engine block?
Would this be from a 400 and would this link help any?
http://www.gregsengine.com/convertin...ds-to-400.html
__________________
MusicMan70 1961 GMC Suburban |
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09-20-2012, 07:23 PM
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#6 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,712
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Re: Should all water passages on head match the engine block?
DING!! DING!! DING!!
We have a winner!! |
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09-20-2012, 08:45 PM
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#7 |
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Registered User
Join Date: Jul 2004
Location: Lomita, Ca
Posts: 1,225
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Re: Should all water passages on head match the engine block?
My heads do look like those, minus the 400 mods. should the same pattern on the heads match the pattern on the block? My 3970010 block and 882 heads have the same pattern but on the block, right by the dowel pin hole there is no small hole, while on the heads, there is
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09-20-2012, 09:45 PM
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#8 |
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Registered User
Join Date: Jul 2004
Location: Lomita, Ca
Posts: 1,225
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Re: Should all water passages on head match the engine block?
My heads do look like those, minus the 400 mods. should the same pattern on the heads match the pattern on the block? My 3970010 block and 882 heads have the same pattern but on the block, right by the dowel pin hole there is no small hole, while on the heads, there is
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09-21-2012, 09:17 AM
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#9 |
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Registered User
Join Date: Jul 2004
Location: Lomita, Ca
Posts: 1,225
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Re: Should all water passages on head match the engine block?
After doing some research, it looks like there are differences between the passages in the heads and the block. My issue was that I had water mix with the oil. Pulled the heads off and had water on top of a piston. Blown head gaskets. Now, heads are clean, block is clean, oarts ready to bolt back on. I noticed some differences in the head and block patterns so I just want to be sure before I bolt it back together. At this point from what it looks like, there are supposed to be slightly different so im going to bolt it up and run it and hope for the best
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