Damaged Mystery Component

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Stormhawk

Junior Member
Joined
Oct 4, 2024
Posts
8
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27
Location
Scobey, Montana
First Name
Marshall
Truck Year
1983
Truck Model
K20
Engine Size
350
Can somebody identify this part and tell me how the vacuum lines are supposed to be routed?
I was changing out the thermostat and one of the vacuum barbs broke off.
It was attached to the thermostat housing, 1983 K20 350CID.
 

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Stormhawk

Junior Member
Joined
Oct 4, 2024
Posts
8
Reaction score
27
Location
Scobey, Montana
First Name
Marshall
Truck Year
1983
Truck Model
K20
Engine Size
350
Doubtful. Truck doesn’t have cruise control. Looks like some dumb emissions nonsense. I bypassed it and the truck seems to be running fine without it.
 

Snoots

Full Access Member
Joined
Jan 23, 2013
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Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350 w/203
IIRC, it stops vacuum from reaching the dizzy can until the engine is at operating temp.
 

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