What Is This and What Does It Do? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NoNeck · 03-04-2012, 06:11 PM

Hey guys -

My son and I replaced the factory cast iron 4 barrel intake on his '70 GMC 350 with an Edelbrock aluminum intake. The part in the photo below was attached to the intake manifold, and had an electrical connector attached to it. The small piece with the two pointed ends was stuck into a hole in the back. It looks like it has a vacuum port, but there was no vacuum hooked to it.

The PO had changed the Q-Jet to an Edelbrock 1406 (w/adapter).

Is this an anti-dieseling solenoid for the original Q-Jet carb? Or, maybe some sort of secondary vacuum advance for cruising at highway speeds?

Also, is it something we need to re-install? If so, how does it connect?

HELP!

NoNeck

gearys 5600 · 03-04-2012, 06:52 PM

Maybe a kickdown for a 400 turbo trans ??

NoNeck · 03-04-2012, 07:15 PM

The truck is an original 3 speed on the column, and it is still in the truck.

NoNeck

**CC69Rat** · 03-04-2012, 07:22 PM

Switch for the hybrid batteries to kick in when you stop at a stop light?

71 super · 03-04-2012, 07:51 PM

TCS solinoid (sp) it was connected to a harness that ran to trans and controlled vac advance of dist. In short an early attempt at emissions control - T transmission C controlled S spark

NoNeck · 03-04-2012, 08:49 PM

Quote:

TCS solinoid (sp) it was connected to a harness that ran to trans and controlled vac advance of dist. In short an early attempt at emissions control - T transmission C controlled S spark

Thanks 71 Super - So, it's really not necessary to re-connect it?

NoNeck

71 super · 03-04-2012, 10:16 PM

not needed.

03-04-2012, 06:11 PM	#1
NoNeck Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 1,108	What Is This and What Does It Do? Hey guys - My son and I replaced the factory cast iron 4 barrel intake on his '70 GMC 350 with an Edelbrock aluminum intake. The part in the photo below was attached to the intake manifold, and had an electrical connector attached to it. The small piece with the two pointed ends was stuck into a hole in the back. It looks like it has a vacuum port, but there was no vacuum hooked to it. The PO had changed the Q-Jet to an Edelbrock 1406 (w/adapter). Is this an anti-dieseling solenoid for the original Q-Jet carb? Or, maybe some sort of secondary vacuum advance for cruising at highway speeds? Also, is it something we need to re-install? If so, how does it connect? HELP! NoNeck Attached Images __________________ 2016 RAM Laramie HEMI 1966 Fairlane GT/A, 390/335 HP If it costs you a dollar to make a friend, KEEP THE DOLLAR. If it costs you a friend to make a dollar, KEEP THE FRIEND.

03-04-2012, 06:52 PM	#2
gearys 5600 Registered User Join Date: Mar 2010 Location: tulsa,ok Posts: 1,085	Re: What Is This and What Does It Do? Maybe a kickdown for a 400 turbo trans ?? __________________ MY BUILD THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=423629 1969 custom/10 swb--SOLD 1968 swb 50th anniv.--SOLD 1967 camaro ss/rs..LS-6-speed, 16-year long project 1956 chevy nomad 1955 chevy 210 2-dr sedan 1978 el-camino ss 1-owner

03-04-2012, 07:15 PM	#3
NoNeck Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 1,108	Re: What Is This and What Does It Do? The truck is an original 3 speed on the column, and it is still in the truck. NoNeck __________________ 2016 RAM Laramie HEMI 1966 Fairlane GT/A, 390/335 HP If it costs you a dollar to make a friend, KEEP THE DOLLAR. If it costs you a friend to make a dollar, KEEP THE FRIEND.

03-04-2012, 07:22 PM	#4
CC69Rat Senior Member Join Date: Jan 2011 Location: Chattanooga TN Posts: 6,224	Re: What Is This and What Does It Do? Switch for the hybrid batteries to kick in when you stop at a stop light? __________________ Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 Currently underway 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet Sold 1985 Silverado Short Fleet Sold 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)

03-04-2012, 07:51 PM	#5
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,080	Re: What Is This and What Does It Do? TCS solinoid (sp) it was connected to a harness that ran to trans and controlled vac advance of dist. In short an early attempt at emissions control - T transmission C controlled S spark __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

03-04-2012, 10:16 PM	#7
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,080	Re: What Is This and What Does It Do? not needed. __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle



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