Need Recommendation for 700R4 Vacuum Switch - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**pjmoreland** · 04-15-2005, 09:40 AM

Does anybody know where I can buy a vacuum switch for my 700R4 torque converter clutch control wiring? Right now I just have the tcc wired to my brake switch, and the engine bogs down pretty bad if I drive up a slight hill and I'm not going very fast.

Bamm · 04-15-2005, 09:43 AM

This is the best switch going today. I've used it on my 700R4 for 4+ years. Not a single problem, super simple to hook up. Just plug it up and forget about it. No switches, no brake light hookups. Just simple....Jerry

cdowns · 04-15-2005, 10:12 AM

Quote:

Originally Posted by Bamm 24

This is the best switch going today. I've used it on my 700R4 for 4+ years. Not a single problem, super simple to hook up. Just plug it up and forget about it. No switches, no brake light hookups. Just simple....Jerry

??????????????????????????????????????? are we supposed to guess ???????

Bamm · 04-15-2005, 10:44 AM

Doh!!!!

Sorry guys, I tend to forget to attach pics and links sometimes. Fingers type faster than my brain works I guess.

Thanks cdowns for catching that.

Later, ....Jerry

http://www.tpiperformance.com/noncomlockit.html

Frank_Zeller · 04-15-2005, 10:52 AM

I'm making a set up that allows 3rd (for towing) and 4th gear lockup based on MPH and engine load (adjustable). This set up uses a vacuum switch and encoder thats in-line with speedo cable and controller circuit. I think I can make make and sale for 110.00. PM me if you have some time before you need it.

Bamm · 04-15-2005, 11:00 AM

As far as towing, wouldn't you just shift back into drive (3rd) and leave it there? Thats what my dad does with his newer model Chevrolet truck......Jerry

64fleetside · 04-15-2005, 11:14 AM

I am using one from an 85 C10, works great & almost free at the boneyard. Brian

**pjmoreland** · 04-15-2005, 11:21 AM

64fleetside, where was the switch located? What does it look like?

Frank_Zeller · 04-15-2005, 11:23 AM

Quote:

Originally Posted by Bamm 24

As far as towing, wouldn't you just shift back into drive (3rd) and leave it there? Thats what my dad does with his newer model Chevrolet truck......Jerry

Most the kits I looked at only lock in 4th. So you have to do a manual switch to lock in 3rd.

If you dont use a min MPH for 3rd gear lock you the converter will lock up at about 20mph at min load. This puts you engine RPM down to 750 rpm with 3.08 rear gear.

**pjmoreland** · 04-15-2005, 11:30 AM

I'm hoping just to buy the vacuum switch by itself, without a kit. The wiring is simple enough. In my opinion the kits are a rip-off for what you get.

The encoder inline with the speedometer cable sounds cool. Something like that would be worth the money for the right application. I'm not going to be doing any towing though.

Bamm · 04-15-2005, 11:39 AM

I'm sure you could manage to get something to work just fine off of a boneyard vehicle, just like some of the other guys here. Not one thing wrong with that, don't get me wrong. That will take you going to the yard, crawling under a truck and removing all that you need, paying anywhere from $10 to $20 for everything and hoping everything is in good shape and will hook up easily. With this kit, I pulled the truck into the shop, put it up on a lift and 25 minutes after opening the box and reading the (very precise and helpful) directions, I was done with all new wiring, switches, etc. All that for $65 is a deal to me......Jerry

**pjmoreland** · 04-15-2005, 11:56 AM

That makes complete sense. I guess I just like to do things the hard way.

Guff · 04-15-2005, 12:32 PM

i'm in the process of finding parts to do the same swap. I'll be using GM part#14014519 or scavenging one of a donor vehicle.

**pjmoreland** · 04-15-2005, 01:28 PM

GM part #14014519 sells for $44.24 at our local Chevy dealership. Anybody know if this switch has two terminals, or does it just have one, and connects the terminal to ground when the switch is activated?

flip66 · 04-15-2005, 01:49 PM

I may have one free if you pay for ride I will take a picture of it tonight

**pjmoreland** · 04-15-2005, 02:31 PM

Awesome. I couldn't ask for anything more!

Bamm · 04-15-2005, 02:46 PM

Course if someone's gonna send you a freebie, ignore everything I said earlier.

flip66 · 04-16-2005, 12:38 AM

is this what you are looking for. If it is figure shipping from UPS at 75040 UPS is right by my work so its easy for me the number on it looks like 14032087 I also have a new drive shaft for a 700r 350 combo LWB but I am not to sure on shipping

**pjmoreland** · 04-16-2005, 01:28 AM

Based on the following link, it looks like that's the right switch (out of an 83 truck):

http://www.robertpowersmotorsports.com/CCC.html

I'm definitely interested in it. I could send you PayPal or a money order for the shipping if you'd like. Thanks a lot for the help!

flip66 · 04-16-2005, 02:07 AM

PM you

fatfords · 04-16-2005, 11:42 PM

Phil,
If you still have the vacuum line that hooked to the switch, send him the thing that looks like a very small fuel filter. He will need that too. I don't remember what is was called but it keeps the TCC from locking/unlocking rapidly. Makes it "more stable." Both of the parts came from a Suburban-80's vintage.

Good Luck!

**pjmoreland** · 04-17-2005, 12:15 AM

Thank you fatfords for that little piece of information. That's a good thing to know about.

flip66 · 04-18-2005, 11:48 PM

I dont have that not really sure were it went

**pjmoreland** · 04-19-2005, 01:12 AM

Where is the vacuum switch usually located in the early 80s trucks? Is it in the engine compartment somewhere?

flip66 · 04-19-2005, 10:19 AM

I have a friend that has an 85 and it is under the hood on the passenger side on the fire wall. I think the thing he is talking about you should be able to get at NAPA. I think it is a vacuum check valve

04-15-2005, 09:43 AM	#2
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	This is the best switch going today. I've used it on my 700R4 for 4+ years. Not a single problem, super simple to hook up. Just plug it up and forget about it. No switches, no brake light hookups. Just simple....Jerry __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS

04-15-2005, 10:44 AM	#4
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	Doh!!!! Sorry guys, I tend to forget to attach pics and links sometimes. Fingers type faster than my brain works I guess. Thanks cdowns for catching that. Later, ....Jerry http://www.tpiperformance.com/noncomlockit.html __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS Last edited by Bamm; 04-15-2005 at 10:44 AM.

04-15-2005, 10:52 AM	#5
Frank_Zeller Registered User Join Date: Jun 2001 Location: Austin, Texas Posts: 796	I'm making a set up that allows 3rd (for towing) and 4th gear lockup based on MPH and engine load (adjustable). This set up uses a vacuum switch and encoder thats in-line with speedo cable and controller circuit. I think I can make make and sale for 110.00. PM me if you have some time before you need it. __________________ 69 SWB C/10 5-6 drop 700R4 69 Firebird Convert 455 4 spd 70 Torino GT Convert Austin-Texas

04-15-2005, 11:00 AM	#6
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	As far as towing, wouldn't you just shift back into drive (3rd) and leave it there? Thats what my dad does with his newer model Chevrolet truck......Jerry __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS

04-15-2005, 11:39 AM	#11
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	I'm sure you could manage to get something to work just fine off of a boneyard vehicle, just like some of the other guys here. Not one thing wrong with that, don't get me wrong. That will take you going to the yard, crawling under a truck and removing all that you need, paying anywhere from $10 to $20 for everything and hoping everything is in good shape and will hook up easily. With this kit, I pulled the truck into the shop, put it up on a lift and 25 minutes after opening the box and reading the (very precise and helpful) directions, I was done with all new wiring, switches, etc. All that for $65 is a deal to me......Jerry __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS Last edited by Bamm; 04-15-2005 at 11:40 AM.

04-15-2005, 09:40 AM	#1
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	Need Recommendation for 700R4 Vacuum Switch Does anybody know where I can buy a vacuum switch for my 700R4 torque converter clutch control wiring? Right now I just have the tcc wired to my brake switch, and the engine bogs down pretty bad if I drive up a slight hill and I'm not going very fast.

04-15-2005, 11:14 AM	#7
64fleetside Registered User Join Date: Apr 2004 Location: arkieland Posts: 1,070	I am using one from an 85 C10, works great & almost free at the boneyard. Brian

04-15-2005, 11:21 AM	#8
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	64fleetside, where was the switch located? What does it look like?

04-15-2005, 11:30 AM	#10
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	I'm hoping just to buy the vacuum switch by itself, without a kit. The wiring is simple enough. In my opinion the kits are a rip-off for what you get. The encoder inline with the speedometer cable sounds cool. Something like that would be worth the money for the right application. I'm not going to be doing any towing though.

04-15-2005, 11:56 AM	#12
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	That makes complete sense. I guess I just like to do things the hard way.

04-15-2005, 12:32 PM	#13
Guff Registered User Join Date: Feb 2002 Location: illinois Posts: 78	i'm in the process of finding parts to do the same swap. I'll be using GM part#14014519 or scavenging one of a donor vehicle. __________________ -Guff 1969 C10 LWB, 350, 700R4, 3.73 gears

04-15-2005, 01:28 PM	#14
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	GM part #14014519 sells for $44.24 at our local Chevy dealership. Anybody know if this switch has two terminals, or does it just have one, and connects the terminal to ground when the switch is activated?

04-15-2005, 01:49 PM	#15
flip66 Registered User Join Date: Jan 2004 Location: Garland TX Dallas area Posts: 658	I may have one free if you pay for ride I will take a picture of it tonight __________________ 1998 Pontiac Grad Prix GTP 1969 C10 396 TH400 3.08 posi

04-15-2005, 02:31 PM	#16
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	Awesome. I couldn't ask for anything more!

04-15-2005, 02:46 PM	#17
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	Course if someone's gonna send you a freebie, ignore everything I said earlier. __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS



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04-16-2005, 12:38 AM	#18
flip66 Registered User Join Date: Jan 2004 Location: Garland TX Dallas area Posts: 658	Picture is this what you are looking for. If it is figure shipping from UPS at 75040 UPS is right by my work so its easy for me the number on it looks like 14032087 I also have a new drive shaft for a 700r 350 combo LWB but I am not to sure on shipping __________________ 1998 Pontiac Grad Prix GTP 1969 C10 396 TH400 3.08 posi Last edited by flip66; 04-16-2005 at 12:54 AM.

04-16-2005, 01:28 AM	#19
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	Based on the following link, it looks like that's the right switch (out of an 83 truck): http://www.robertpowersmotorsports.com/CCC.html I'm definitely interested in it. I could send you PayPal or a money order for the shipping if you'd like. Thanks a lot for the help!

04-16-2005, 02:07 AM	#20
flip66 Registered User Join Date: Jan 2004 Location: Garland TX Dallas area Posts: 658	PM you __________________ 1998 Pontiac Grad Prix GTP 1969 C10 396 TH400 3.08 posi

04-16-2005, 11:42 PM	#21
fatfords Registered User Join Date: Sep 2002 Location: DFW, TX Posts: 350	Phil, If you still have the vacuum line that hooked to the switch, send him the thing that looks like a very small fuel filter. He will need that too. I don't remember what is was called but it keeps the TCC from locking/unlocking rapidly. Makes it "more stable." Both of the parts came from a Suburban-80's vintage. Good Luck! __________________ '56 F-100 (w/all GM stuff) Lookin' for another parts chaser! '05 GMC crew cab Last edited by fatfords; 04-16-2005 at 11:52 PM.

04-17-2005, 12:15 AM	#22
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	Thank you fatfords for that little piece of information. That's a good thing to know about.

04-18-2005, 11:48 PM	#23
flip66 Registered User Join Date: Jan 2004 Location: Garland TX Dallas area Posts: 658	I dont have that not really sure were it went __________________ 1998 Pontiac Grad Prix GTP 1969 C10 396 TH400 3.08 posi

04-19-2005, 01:12 AM	#24
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,982	Where is the vacuum switch usually located in the early 80s trucks? Is it in the engine compartment somewhere?

04-19-2005, 10:19 AM	#25
flip66 Registered User Join Date: Jan 2004 Location: Garland TX Dallas area Posts: 658	I have a friend that has an 85 and it is under the hood on the passenger side on the fire wall. I think the thing he is talking about you should be able to get at NAPA. I think it is a vacuum check valve __________________ 1998 Pontiac Grad Prix GTP 1969 C10 396 TH400 3.08 posi

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