Looking for Wire Separators

[longslot]

helping a friend detail his 84 GMC's engine compartment.
it's missing all the spark plug wire separators, brackets and holders.
it's a 350 with stock intake and exhaust manifolds, also has the production air cleaner assembly.
AIR pump was removed.
i believe the thermoswitch is missing for the EFE valve, need the vacuum diagram.
steel line is gone to the EFE , and i believe there is supose to be a short red hi-temp 1/4 hose to connect them.

thanks for any help, Keith

 

[firebane]

Any parts store will have brackets and separators for spark plugs. Just be careful because of them are too small or too tight and will mark up or leave impressions in the plug wires.

 

[longslot]

these parts are what i call dealer only, i need the part numbers .

i'll then search for nos parts at dealers on line and sites like e-bay .

thanks

 

[chengny]

In this case, all the part numbers in the world won't help. These are NLA everywhere except in junkyards. Below is some info.


There are a lot of vacuum diagrams for a 1984 3/4 ton truck with a 350 motor. Without the three character code on the EPA sticker, or lots more info about the truck (e.g. the type of transmission, federal or CA package, high/low altitude operation, carburetor style, 2WD or 4WD etc), the exact vacuum hose routing and components required are anyone's guess. I guessed at two of the most common configurations:

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OEM plug wire separators came only with the original harnesses - they were not sold separately. The catalog only lists individual wires as spare parts. Forget about finding NOS replacements. The plug wire stand-offs and bracketing were - at the time - available as spare parts. But I can say with near certainty that they are NLA everywhere as well. Again hit the junkyards. The parts illustration and cross-key that references group 2251:

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If you are determined to try to find these parts, here is the complete list of part numbers in the 2251 group. Also, see the note regarding plug wires (group 2240):

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The TVS for actuating the EFE valve - here again without knowing more about the truck, we can't be certain about the part number. But in this case there are only 4 choices (and that goes down to just 2 if it isn't a CA conforming truck). If I had to guess, I would say you want part number 3041769 - mainly because there were very few truck that were modified for high altitude. The choices:

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As far as the steel tubing and connecting hoses for actuating the EFE diaphragm - neither of these show a part number. They are just listed by diameter.