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Old Oct 12, 2023 | 12:22 PM
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Carb Vac Lines

Hello all.
Trying to get this 1986 F600 dump truck with a 370 up and running. It's been sitting for a while so I took the carb off, gave it an overhaul, and reinstalled it. A few of the vac lines were already disconnected and the Emission/Vacuum Routing sticker on the valve cover is missing. I've looked online but can't find one.
If someone DID have a picture of that Emission/Vacuum Routing sticker for a 1986 370, that would be amazing!

As for the Holley 2380EG carb on it, I'm trying to confirm where the 3 vac ports should go. I "believe" that vac port #2 in my pic is the Timed Spark Vac Port.
For ports #1 and #3, I'm not quite sure where they should be ran to.

Any help would be greatly appreciated!



 
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Old Oct 13, 2023 | 05:07 AM
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Need to know if the emissions are Cali or not (I imagine you have no idea on that as the sticker is missing)
That #2 sure looks like venturi vacuum used for EGR (Cali)
Certainly #1 is manifold vacuum and it looks like #3 on yours is spark port

 
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Old Oct 13, 2023 | 01:02 PM
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Thanks for the info.
No, this is not a Cali truck.
 
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Old Oct 13, 2023 | 01:07 PM
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The truck has been sitting for over 8 years.


Here's another pic.
 
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Old Nov 6, 2023 | 01:31 PM
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From: LOURES, PORTUGAL

The bottom connection tube is the "Governor Vacuum Tube"

Despite being a different carburetor, I think they share the same vacuum connections...
I hope this helps!
 
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Old Nov 6, 2023 | 01:56 PM
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From: LOURES, PORTUGAL
Here is the VACUUM HOSE ROUTING"

VACUUM HOSE ROUTING
 
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Old Feb 4, 2024 | 09:06 AM
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Thanks a bunch!
 
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