1964 chrysler 318 cooling system

disciple

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I have a pair of 1964 chrysler 318 out of a shepherd boat. I am in need of the cooling system schematic and parts breakdown of the exhaust logs. these engines are running cool on the starboard side and hot on the port help please
 
When you say Cool/Stbd and Hot/Port, are you referring to the two sides of both engines? By that I mean both Stbd banks are Cool and both Port banks are Hot? Or that the whole Stbd Engine is Cool and the whole Port Engine is Hot?

Also, can you tell us if these are "Big" or "Small" Block 318's? There was a heavy duty big block 318 for awhile, before Chrysler brought out the small blocks. I know there were both. Not clear if my memory that the small blocks were called "LA" something...
 
You have most likely looked at all these, but maybe there is something here that matches your parts? At least some will be for 1965 up though, apparently differing in some ways from pre-'65.

http://www.marineengineparts.com/exhaust-manifolds-risers/chrysler-exhaust.html
http://www.marineparts.com/c-452-chrysler-manifolds-risers-osco-small-block-v8-318-360-with-swivel-exhaust.aspx
http://www.barrmarine.net/chrysler.html
http://bpi.ebasicpower.com/shop/index.php?main_page=index&cPath=242_259_261&zenid=472ce051dff542fccae8744ff836e5a6

Here's an old marine 225hp/318ci manual but it doesn't say much about the cooling/exhaust systems or even give the year.:
https://www.correctcraftfan.com/Downloads/Chrysler225_Manual.pdf

Very basic Chrysler cooling flow ( unknown era): https://www.google.com/search?q=chr...=FrSsWbucMYTsmAH1ka2IBw#imgrc=ItkbGpIgt34dnM:
(Not a "log" style exhaust and doesn't show a crank oil or transmission cooler.)

Are yours RWC or FWC?
With some effort you should be able to track the water flow of either, and relative temps may be semi-good clues on a warmed engine.

Once you figure that out for each hose and system device , I find it helps later to mark ( paint marker) each one with "RW" or "FW" and flow-directional arrow for easy ID when I'm tired.
 
yes both starboard sides are cool and both port sides are hot. All the info sent so far does not relate 1964 Chrysler 318. they are big blocks. someday I will figure out how to respond to individual posts. thanks for all the help so far. still hoping to solve my problem
 
Big Block 318 was a Torque Monster. Friend had two in a 35-footer and it was NICE. Only one I ever worked on was in a 1966 school bus. Again, torque! I hope you'll get what you need to keep them running well.

Are they Raw or Fresh Water Cooled? You'll need the appropriate diagram, and anybody here trying to help will need to know also.

Torque-wise, the small block 318 is the opposite. Won't get your pickup out of the hole. Might as well have a Slant Six.

You can "Reply to Topic" for any given response. It'll quote that response. Then you can delete what you don't want to repeat in your reply, go ahead and key your new text. The whole Forum will still see your reply.
 
318 big block?? really?? valve cover shape is the clue. scalloped lower edge on small blocks 318? or straight on the big blocks 340ci??
 
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