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06-12-2019, 08:05 PM
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#1 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Random things in engine bay
Quick question... Can anyone id these random relays or sensors in my engine bay? There are two that sit front and rear of my carb and one that sits up by the heater box
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb Last edited by LockDoc; 06-12-2019 at 08:34 PM. |
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06-12-2019, 08:31 PM
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#2 |
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The Older Generation
  
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,315
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Re: Random things in engine bay
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I will flip your pictures for you. What size truck is this? The carb pieces almost look like governor parts. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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06-12-2019, 08:37 PM
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#3 |
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Registered User
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 755
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Re: Random things in engine bay
TSC, transmission spark control system,
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06-12-2019, 08:43 PM
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#4 | |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: Random things in engine bay
Quote:
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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06-12-2019, 08:44 PM
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#5 | |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: Random things in engine bay
Quote:
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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06-12-2019, 10:27 PM
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#6 |
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Who Changed This?
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,081
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Re: Random things in engine bay
Transmission Controlled Spark is a system that limits vacuum advance until the engine is warmed up and the transmission is in high gear. It appears to have been already bypassed, so you could just take the wires, hoses and solenoids off and throw them away. They were designed to limit hydrocarbons and oxides of nitrogen emissions back in the early '70s SMOG days. The system also provided for faster warm-up of the engine for better fuel economy.
The solenoid at the top of picture #2 is not part of the TCS. It is used to hold the throttle open when the engine is running, and allows the throttle to completely close when the engine is turned off, to avoid dieseling.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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11-15-2019, 11:33 PM
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#7 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: Random things in engine bay
So this is with everything hooked back up... can I run a line from the distributor straight to one of these vacuum ports on the carb for advance? If so which one on the carb?
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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11-15-2019, 11:36 PM
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#8 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: Random things in engine bay
Never mind, a simple google search had what I needed, thanks guys!!
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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