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02-21-2017, 09:56 PM
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#1 |
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Registered User
Join Date: Feb 2017
Location: Fredericksburg, Va
Posts: 2
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Engine Wiring
Been a on the forum for a while this is my actual first post! Little info I have a 1984 K30 SRW with a SB 350, turbo 400 trans and a 205 transfer case. Dana 60 up front and 14 bolt upfront. The original motor crapped out so I am in the process of putting in a crate 350 in it. Which leads me to my question the original manifold had some vacuum lines connected to it to a thing called a Speed switch valve. What is that and what does it do? That valve sent 2 wires to what the wiring schematics are calling Speed SW which I am assuming is switch? What is this and how can I remove it because I am putting Hooker headers on it and there is no option for this setup and I would rather not have random wires in my engine bay. I am attaching photos of the setup thank you so much for the info.
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02-22-2017, 10:39 AM
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#2 |
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Senior Member
 
Join Date: Jul 2000
Location: North Texas
Posts: 3,442
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Re: Engine Wiring
http://www.autozone.com/repairguides...00c1528004c499
"The purpose of the throttle return control system is to prevent an over rich condition during periods of deceleration. This is accomplished by keeping the throttle plate slightly open during deceleration, which helps maintain the air/fuel ratio at optimum efficiency. The Throttle Return Control (TRC) system consists of a throttle lever actuator, a solenoid vacuum control valve, and an engine speed switch."
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Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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02-22-2017, 07:40 PM
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#3 |
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Registered User
Join Date: Feb 2017
Location: Fredericksburg, Va
Posts: 2
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Re: Engine Wiring
Awesome thank for the information! So I will be going to a edelbrock 1406 carb so this wouldn't really apply in my situation how could I delete this system from my truck?
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02-23-2017, 10:12 PM
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#4 |
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Senior Member
Join Date: Jul 2000
Location: North Texas
Posts: 3,442
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Re: Engine Wiring
Yes.
__________________
Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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