Vacuum Spark Control

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Kilian

Full Access Member
Joined
Mar 25, 2018
Posts
191
Reaction score
35
Location
Wisconsin
First Name
K
Truck Year
1983
Truck Model
C2500 on its way to a K2500
Engine Size
350
Hello folks, wondering if anyone can provide some photos or info on how the components circled in the attached photo. This is a 1983 GMC 2500, 350 "M" code engine (HD V8). It's a mess of vacuum hoses that don't go anywhere, so I'm trying to get some of the functionality working again, such as spark control for the distributor.

Not sure where the Thermal Vacuum Switch should be located (assume that it's controlled by coolant temp?), and which port on the Q-jet provides vacuum, best place to put the check valve and delay valve, etc.
 

Attachments

  • Screenshot 2024-10-01 095607.jpg
    Screenshot 2024-10-01 095607.jpg
    115.7 KB · Views: 6
Last edited:

Latest posts

Forum statistics

Threads
43,674
Posts
940,335
Members
35,594
Latest member
tony81
Top