Great question! For a brief explanation It is a lock-up for the torque converter. The Torque Converter is a fluid coupler that can lose a lot of energy and fuel economy. By locking it up in 4th gear you'll get better fuel and drop your RPM"s down a little bit.
You need a toggle switch to turn lock up off when you come to a stop, or your engine could lug and stall. A toggle switch would be the most efficient way to go for this. Thanks for commenting.
Brake interrupt would be nice and can we leave power on all the time and use 3rd gear for towing good question . I was told To drill governor cover and tape it if I had no oil port ?
Hey Daniel, Thanks for the questions. I'll answer them one by one for you. Does it need lock up at all time? No it does not need lock up all the time. My question what rpm does your guys work at? About 2500 rpm. If lower and smoother do I need put old wires for your guys kit work. You can use our lock up kit and your internal wiring harness. Hope that helps if you need anything further just let us know. Thanks
On the plug that goes into the trans you have 4 pins, the pin between the tab and the latch that holds itno the connector in the trans is pin A, counting clockwise with the plug off facing you the 3rd pin is D. If you want to bypass the ECM, run a vacuum hose from your venture vacuum on the carb or intake to a vacuum switch... One side of the switch run to 12V.... the other side run to Pin A, cut the wire for pin D (usually black) and ground it to the transmission.
On that model I would check the brake light switch, one side goes to the trans, the other goes to a vacuum switch under the hood.... To check at the trans, run a test light to pin A and give it 1/4 to 1/4 throttle and see if your test light comes on... If not its the brake light switch or your vacuum switch... If it does its the TCC solenoid or 3rd gear pressure switch or a bad ground which is pin D... Hope that helps... I hope that helps.. Its an easy fix...
If the pressure switch energizes the circuit could you not use the toggle switch and hook it up to a 12v source the turns on with the stock key ignition switch. If so what if any advantages do you have with the circuit being on a toggle switch
Hi, thanks for this video. My recently rebuild 700r4 has a working lockup solenoid but somehow the ECM is not telling the transmission to lock up. The shop has no idea how my computer system works (1984 trans am) and I was looking for simple ways to just activate the lockup manually. As I understand its just a matter of engaging the solenoid, but you put in a oil pressure in it. This is to only let the lockup engage in the (overdrive) gear so 3rf and 2nd can never have lockup? Regards, Robert
Hi saw your video on the 700R trans. Yours uses a switch to lock out the converter. Mine has knob to adjust the lock out. I have 55 Chevy truck with a 700R trans, 265 engine. Turning the knob till the green light comes on should I set the knob at what speed. Thanks Len
I have a 89 and I removed the computer. I cut the TCC ground wire and went to the single wire 4 th. Gear pressure switch for a ground to TCC. The only Switch on the valve body and I was done. No kit required.
I recently pulled a 700r4 out a 91 rs Camaro and put in my 72 c10 small block. does it need lock up at all time? my buddy does trans on side. he installed tci universial lock up kit # 376600. run off vacuum,rewiring changing inside pressure switch instead single. it dual prones. but lock each gear at 6,000 rpm. my question what rpm does your guys work at? if lower and smoother do I need put old wires for your guys kit work.
hello. this may sound stupid/redundant but im planning on doing a TH400 to a 700R4 swap in my 68 c10. my question is do i need this kit and the internal lockup kit as well as a lockup converter? its just a weekend cruiser truck so no drag racing with it. just a 350 with a few goodies. thanks for the awesome vids!!!
+2009KVFD976 If you are doing a conversion to a 700R4 you must have a lock up kit and a lock up torque converter. We specialize in full conversion kits. Give us a call at 800-708-0087 and we'll be sure to get the proper components for your application. Thanks
I am looking to replace the 700R4 in my 83 Chevy K10 Scottsdale 4x4. This will be a daily driver and rarely used for off-road applications. It will be used for towing my boat, however, I do not want a weak transmission for those rare occasions that I do take it off-road or the routine shifts due to stop and go driving around town or highway trips. My engine is a 350 with a mild cam, would you recommend a stock stall converter and lock-up kit for this application?
Thanks MJD for your question. With a mild cam you might want to look at something with a little more stall. If you provided the engine and cam specs we would be able to let you know for sure. Give us a call at 800-708-0087 and we'll be able to let you know exactly. Thanks
I have already ordered the transmission from your company. Unfortunately, the actual cam size is unknown as I purchased the truck and the engine (350ci) was already rebuilt by someone else. I have tried to contact the actual owner or builder and not had any luck. I ordered the stock stall with the tranny. I know the stall that is in it now is to high and I really don't like it.
Does the sensors on the valve body of the 700R4 need to be powered up before the transmission can shift correctly or does the TV cable that controlled the governor and amount of fluid pressure will allow it to change
So, i bought an 89 firebird and it has this switch. What is it used for? Just for highway use, or would it somehow work for drag racing? Guy i bought it off of said he used to take it to the strip all the time
Quick question below you mentioned 100 psi pressure rating on the switch. I assume it is the rating that the switch diaphragm will rupture. Is this switch a Normally open switch that Closes 28-32 PSI?
This switch closes at 0 PSI, but some other brands do not engage until around 20-30 PSI, which is still okay. If you have any more questions on that John give us a call at 800-708-0087.
The number 2 would not signify anything in our system but if you check the side of the case or the back of the pump there should be an embossed two digit number inside a circle about 1 inch around or if you drop the pan it will be embossed on the valvebody in the middle area same size. Thank you for choosing Monster Transmissions.
I have a newer style 700r4 with a 208 transfer case on it from a 1991 k1500 it dont have any ports on the side of it . By servo housing . So what can i do .
You will be able to use an internal 4th gear setup or you can use our lockup kit with the factory internal harness. www.monstertransmission.com/700R4-External-Lock-Up-Kit_p_4988.html#.UyiUq_ldV8E
It is really personal choice and depends on the truck build as well. So it can go either way. There is a lot of information on it out there in the forums. Thanks
Can i cut my factory harness and test it using the 2 pins shown here? My last 2 700r4s haven't been locking up in 4th and it kills my mpg (17 with a 4.3). If i can get the solenoid to click then i'm going to buy one of these kits.
When it comes to cutting the wiring harness, there is always a risk of your unit failing and further damage. Give us a call at 800-708-0087 and we can discuss these risks with you and your available options
I had a rebuilt(approx 10k miles) 700r4 but it sat for like 4+ yrs, but it had oil, got around to replace the filter and atf with new tv cable but now it won't shift out of first but it has reverse. Trans. Shop sold me a universal tv cable could that be the issue (not calibrated right)?
I have a 700 r4 and it seems to not shift into 3rd or 4th gear. I've adjusted the TV cable and it didn't help. the Transmission was sitting for 10 years before it was used but it was still in the car. any ideas?
+Mike Boardman It could be a couple of things. A possible stuck valve in the valve body or depending on what the rear gear ratio is you could have the wrong governor installed. Hope that helps. If you have any further questions feel free to give us a call at 800-708-0087. Thanks!
Should a first gen 700r4 transmission kick into 4th gear without lock up plug. I just installed one in my 65 elco and can't get 4th gear. I have adjusted the tv cable many times and can not get 4th gear.1st through 3rd gear shifting great but everything i read says shifting too eary.. Also nothing plugged into this plug
Thank you for the question! The Transmission should still have 4th gear with or without the lock up pig tail, if the transmission is not designed to be run without lock up however we would recommend getting a lock up kit. Lock up is designed to engage once the transmission reaches a certain pressure after already being in 4th gear. Give us a call if you need anything else at 800-708-0087.
A year ago I purchased a 2001 4x4 chevy blazer. Im getting horrible gas mileage. I have no idea of what to look for first. Can someone please direct me. I need help bad!
Great question John, there are a few things that can cause your TH400 to not shift out of 1st. The first thing you want to do is check to see if you can manually shift the transmission through gears. If you can not then you want to check your shifter linkage. If that is correctly hooked up then the clutches and bands are worn and it is time or a rebuild. If the transmission can be manually shifted into gear then the next step would be to check your vacuum. You need to have at least 16 inches of vacuum at idle for the transmission to shift correctly. If you have enough vacuum check to make sure that the modulator valve is not stuck. Next you want to check and make sure the valves and springs in the governor are not stuck and give it a nice cleaning. The gov. can be accessed from the passenger side of the transmission by removing the four bolts holding the gov. on. If these steps do not fix the issue then you can try manually shifting through the gears to try and clean out the valvebody. The last step will be removing the valvebody and cleaning it.
These kits are designed for Vehicle that are making the conversion to a 4 speed Transmission and do not already have the Harness set up for the factory lock up. So if you have a custom vehicle with a 700r4 this kit will ensure to make the most of the MPG. www.monstertransmission.com/Lockup-Kits_c_3767.html
Hey Eric, that would be varying depending upon different specs. If you give us a call one of our tech's can give you a quote once they have more vehicle info, our number is 800-708-0087.
The TH350 had a few different tail sizes. Some do require a different drive shaft. Give us a call and we'll be able to help you find out which one you have.
About how do you guy's sell these for? I have a 1990 Corvette with the 700r4 transmission. It currently has a B&M shift kit, but it really annoying when it locks up in 4 gear at 45 mph 😡😡
You can find the lock up kit on our site here : www.monstertransmission.com/700R4-External-Lock-Up-Kit_p_4988.html And the 7000R4 here: www.monstertransmission.com/700R4_c_3942.html Or give us a call at 800-708-0087
The lock up kit is designed to work with any 700r4 transmission with the 4th gear pressure port on the passenger side of the case. Diesel or Gas engines.
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Finally , a video that I can understand ! Bravo , bravo , hats off ! Outstanding ! Thanks
Great question!
For a brief explanation It is a lock-up for the torque converter. The Torque Converter is a fluid coupler that can lose a lot of energy and fuel economy. By locking it up in 4th gear you'll get better fuel and drop your RPM"s down a little bit.
You need a toggle switch to turn lock up off when you come to a stop, or your engine could lug and stall. A toggle switch would be the most efficient way to go for this. Thanks for commenting.
Brake interrupt would be nice and can we leave power on all the time and use 3rd gear for towing good question . I was told
To drill governor cover and tape it if I had no oil port ?
Do you have to constantly flip the toggle switch on and off while driving? Can you wire this without the toggle? Just a daily driver and cruise car.
You can wire it without the switch to have it on at all times, or just leave the switch on until you want lock up off.
So would I need this kit to go from a 1976 C10 TH350 to a 1984 700R4 swap?
Can I lock it up with out using a switch as if it was in the 1984 C10?
Hey Daniel, Thanks for the questions. I'll answer them one by one for you.
Does it need lock up at all time?
No it does not need lock up all the time.
My question what rpm does your guys work at?
About 2500 rpm.
If lower and smoother do I need put old wires for your guys kit work.
You can use our lock up kit and your internal wiring harness.
Hope that helps if you need anything further just let us know. Thanks
On the plug that goes into the trans you have 4 pins, the pin between the tab and the latch that holds itno the connector in the trans is pin A, counting clockwise with the plug off facing you the 3rd pin is D. If you want to bypass the ECM, run a vacuum hose from your venture vacuum on the carb or intake to a vacuum switch... One side of the switch run to 12V.... the other side run to Pin A, cut the wire for pin D (usually black) and ground it to the transmission.
On that model I would check the brake light switch, one side goes to the trans, the other goes to a vacuum switch under the hood.... To check at the trans, run a test light to pin A and give it 1/4 to 1/4 throttle and see if your test light comes on... If not its the brake light switch or your vacuum switch... If it does its the TCC solenoid or 3rd gear pressure switch or a bad ground which is pin D... Hope that helps... I hope that helps.. Its an easy fix...
If the pressure switch energizes the circuit could you not use the toggle switch and hook it up to a 12v source the turns on with the stock key ignition switch. If so what if any advantages do you have with the circuit being on a toggle switch
Hi, thanks for this video. My recently rebuild 700r4 has a working lockup solenoid but somehow the ECM is not telling the transmission to lock up. The shop has no idea how my computer system works (1984 trans am) and I was looking for simple ways to just activate the lockup manually. As I understand its just a matter of engaging the solenoid, but you put in a oil pressure in it. This is to only let the lockup engage in the (overdrive) gear so 3rf and 2nd can never have lockup?
Regards,
Robert
Hi saw your video on the 700R trans. Yours uses a switch to lock out the converter. Mine has knob to adjust the lock out. I have 55 Chevy truck with a 700R trans, 265 engine. Turning the knob till the green light comes on should I set the knob at what speed. Thanks Len
I have a 89 and I removed the computer. I cut the TCC ground wire and went to the single wire 4 th. Gear pressure switch for a ground to TCC. The only Switch on the valve body and I was done. No kit required.
I recently pulled a 700r4 out a 91 rs Camaro and put in my 72 c10 small block. does it need lock up at all time? my buddy does trans on side. he installed tci universial lock up kit # 376600. run off vacuum,rewiring changing inside pressure switch instead single. it dual prones. but lock each gear at 6,000 rpm. my question what rpm does your guys work at? if lower and smoother do I need put old wires for your guys kit work.
I just purchased this Kit from Monsters Trans. Where is the 4th gear pressure port on the 200-4r. Thanks
Probably a dumb question, but does it matter if your truck is 4 wheel drive or not. I have a 1990 K5 blazer 4x4 I was thinking of installing this on?
Not a dumb question at all. It does not matter if it's in 4wd.
Can I just leave the switch on all the time?
hello. this may sound stupid/redundant but im planning on doing a TH400 to a 700R4 swap in my 68 c10. my question is do i need this kit and the internal lockup kit as well as a lockup converter? its just a weekend cruiser truck so no drag racing with it. just a 350 with a few goodies. thanks for the awesome vids!!!
+2009KVFD976 If you are doing a conversion to a 700R4 you must have a lock up kit and a lock up torque converter. We specialize in full conversion kits. Give us a call at 800-708-0087 and we'll be sure to get the proper components for your application. Thanks
I am looking to replace the 700R4 in my 83 Chevy K10 Scottsdale 4x4. This will be a daily driver and rarely used for off-road applications. It will be used for towing my boat, however, I do not want a weak transmission for those rare occasions that I do take it off-road or the routine shifts due to stop and go driving around town or highway trips. My engine is a 350 with a mild cam, would you recommend a stock stall converter and lock-up kit for this application?
Thanks MJD for your question. With a mild cam you might want to look at something with a little more stall. If you provided the engine and cam specs we would be able to let you know for sure. Give us a call at 800-708-0087 and we'll be able to let you know exactly. Thanks
I have already ordered the transmission from your company. Unfortunately, the actual cam size is unknown as I purchased the truck and the engine (350ci) was already rebuilt by someone else. I have tried to contact the actual owner or builder and not had any luck. I ordered the stock stall with the tranny. I know the stall that is in it now is to high and I really don't like it.
Give us a call and we can work with you on finding the best stall.
Does the sensors on the valve body of the 700R4 need to be powered up before the transmission can shift correctly or does the TV cable that controlled the governor and amount of fluid pressure will allow it to change
The switches on a 700R4 are for lock-up only they don't control the shift points. The T.V. cable and governor handle that.
So, i bought an 89 firebird and it has this switch. What is it used for? Just for highway use, or would it somehow work for drag racing? Guy i bought it off of said he used to take it to the strip all the time
***** It is to turn your lockup on and off. We build our units where it controls itself. Leave on for normal driving or turn off for racing.
It depends on the transmission that you have.Some transmissions need complete lock-up or the unit will overheat and fail rapidly.
Quick question below you mentioned 100 psi pressure rating on the switch. I assume it is the rating that the switch diaphragm will rupture. Is this switch a Normally open switch that Closes 28-32 PSI?
This switch closes at 0 PSI, but some other brands do not engage until around 20-30 PSI, which is still okay. If you have any more questions on that John give us a call at 800-708-0087.
I have a 4l60 e transmission with a number 2 on the side of case. I've been trying to figure out what it came out of?
The number 2 would not signify anything in our system but if you check the side of the case or the back of the pump there should be an embossed two digit number inside a circle about 1 inch around or if you drop the pan it will be embossed on the valvebody in the middle area same size. Thank you for choosing Monster Transmissions.
So it locks at all times when in 4th even part throttle or coasting?
that is normal on a 4th gear lock up once it is in 4th lock up is engaged
I have a newer style 700r4 with a 208 transfer case on it from a 1991 k1500 it dont have any ports on the side of it . By servo housing . So what can i do .
You will be able to use an internal 4th gear setup or you can use our lockup kit with the factory internal harness.
www.monstertransmission.com/700R4-External-Lock-Up-Kit_p_4988.html#.UyiUq_ldV8E
I have a 700r4 rebuilt but won't reverse feels like it's stuck when I reverse it Forward works good any idea I would appreciate
We need a little more info Danny, Give us a call at 800-708-0087
Trans brake one th 350 is it a good or bad idea for mud racing
It is really personal choice and depends on the truck build as well. So it can go either way. There is a lot of information on it out there in the forums. Thanks
HEY BRO DO YOU KNOW IF 1992 CLASSIC CAPRICE TRANSMISSION IS ELECTRIC OR DOES IT MATTER WHICH ONE U INSTALL? IT IS A 700R4
If you were to run 12 volt to the connector and skip the oil pressure valve, would it be possible to lock the torque converter in all gears?
Yes, it would be possible to lock the 2nd, 3rd, and 4th gears if you're in a 1998 and newer 700R4.
Interesting. What about a TH200? I have one with the wire connector. I guess it would work on second and high gear then?
They run on hydraulics and electronics so it all depends on pressure for what gear it would go into, but it will never go into lock up in first gear.
Great video thanks👍👍👍
Hi what is the cost for your lock up kit, would like to get one for my 700r-4 thank you
Tell us wen to engage the switch, or we turn it on when truck is on??
We would use the switch so if you are going up high hills or towing you can turn off lock up for high rpm range in 4th
Can i cut my factory harness and test it using the 2 pins shown here? My last 2 700r4s haven't been locking up in 4th and it kills my mpg (17 with a 4.3). If i can get the solenoid to click then i'm going to buy one of these kits.
When it comes to cutting the wiring harness, there is always a risk of your unit failing and further damage.
Give us a call at 800-708-0087 and we can discuss these risks with you and your available options
I had a rebuilt(approx 10k miles) 700r4 but it sat for like 4+ yrs, but it had oil, got around to replace the filter and atf with new tv cable but now it won't shift out of first but it has reverse. Trans. Shop sold me a universal tv cable could that be the issue (not calibrated right)?
Yes the cable adjustment could very well be the issue. We've got a video to show you how to adjust the cable. ruclips.net/video/D109Fz1SK18/видео.html
I didn’t expect that G to sounds so good 😂
Not always 670whp😅
RR racing kit lose all the power after small pull because of heat
so 550whp max
I have a 700 r4 and it seems to not shift into 3rd or 4th gear. I've adjusted the TV cable and it didn't help. the Transmission was sitting for 10 years before it was used but it was still in the car. any ideas?
+Mike Boardman It could be a couple of things. A possible stuck valve in the valve body or depending on what the rear gear ratio is you could have the wrong governor installed. Hope that helps. If you have any further questions feel free to give us a call at 800-708-0087. Thanks!
Same problem on my transmission, I took the governor off and cleaned it with brake cleaner and it worked good after that, shifted all 4 gears.
Should a first gen 700r4 transmission kick into 4th gear without lock up plug. I just installed one in my 65 elco and can't get 4th gear. I have adjusted the tv cable many times and can not get 4th gear.1st through 3rd gear shifting great but everything i read says shifting too eary.. Also nothing plugged into this plug
Thank you for the question! The Transmission should still have 4th gear with or without the lock up pig tail, if the transmission is not designed to be run without lock up however we would recommend getting a lock up kit. Lock up is designed to engage once the transmission reaches a certain pressure after already being in 4th gear. Give us a call if you need anything else at 800-708-0087.
A year ago I purchased a 2001 4x4 chevy blazer. Im getting horrible gas mileage. I have no idea of what to look for first. Can someone please direct me. I need help bad!
There are so many variables that it could be. Have you taken it to a shop to have them check it out to give you an idea?
so is the lock up really necessary to drive daily?
Will this kit work with the brake pedal to unlock the converter?...
This kit is not specific for the brake pedal.
Does the 200-4R need the same lockup kit? I haven't read about it anywhere for conversions from TH350 to TH200r4
Dont forget the Corvette servo
dose a' 93' 4l60e with a tv cable require a computer to shift properly or can a lock-up kit be installed ?
The E in 4L60E stands for electronic. Electronics are required for that trans type.
I do not have these oil bosses with the 9/16 heads on my 91 Z/28 with the original transmission. Is there another kit for my 91 700R4 ?
Never mind, I found your other video covering my transmission.
can the lock up switch install be damaging to a stock 700r4? would you recommend putting it on a stock car/truck altogether?
The external lock up kit will not harm a factory lock-up.
When do you turn it on at the switch? Or do you immediately turn it on when you start the car?
It all depends on driving situations and if you have it on with power from ignition or always on.
Quick question. If I choose not to run the lockup do I still have a four speed, (Utilizing all 4 gears)? Or is the lock up considered 4th gear?
Yes you will still have 4th gear. The lock up wouldn't be a gear but rather holds it in the 4th gear. Hope that helps and makes sense. Thanks
Thanks I appreciate the info
Monster Transmission nee
does this kit also work on a 200 4r trans? Would the oil port be in similar location?
This kit does work for both 700-R4/200-4R. And yes, the oil port will be in similar location on the left side of the servo.
so does a 700r4 need complete lock up
what would cause a 400 traney not to shift out of first gear it is a electric shift
Great question John, there are a few things that can cause your TH400 to not shift out of 1st. The first thing you want to do is check to see if you can manually shift the transmission through gears. If you can not then you want to check your shifter linkage. If that is correctly hooked up then the clutches and bands are worn and it is time or a rebuild. If the transmission can be manually shifted into gear then the next step would be to check your vacuum. You need to have at least 16 inches of vacuum at idle for the transmission to shift correctly. If you have enough vacuum check to make sure that the modulator valve is not stuck. Next you want to check and make sure the valves and springs in the governor are not stuck and give it a nice cleaning. The gov. can be accessed from the passenger side of the transmission by removing the four bolts holding the gov. on. If these steps do not fix the issue then you can try manually shifting through the gears to try and clean out the valvebody. The last step will be removing the valvebody and cleaning it.
what is the pressure rating on the pressure switch??
Do all 700r4's have the plug next to the servo?
No, after 1989 they stopped putting them on there.
Why do I need a lock up kit? Doesn't the transmission already have a lock up?
These kits are designed for Vehicle that are making the conversion to a 4 speed Transmission and do not already have the Harness set up for the factory lock up. So if you have a custom vehicle with a 700r4 this kit will ensure to make the most of the MPG.
www.monstertransmission.com/Lockup-Kits_c_3767.html
What is the lock up kit for?
How much dose that kit cost
You can find the kit and pricing here: www.monstertransmission.com/700R4-External-Lock-Up-Kit_p_4988.html#.XrP2cahKiUk
Which pig tail connector is the ground?
When it's plugged in the transmission the wire facing the tail end is the ground.
100lbs on pressure switch.
How much is a new 700R4
Hey Eric, that would be varying depending upon different specs. If you give us a call one of our tech's can give you a quote once they have more vehicle info, our number is 800-708-0087.
Where can I buy this kit?
wanting to do this in my 82 c10 to improve milage. has a 350, would I have to get drive shaft cut?
The TH350 had a few different tail sizes. Some do require a different drive shaft. Give us a call and we'll be able to help you find out which one you have.
Does it work without a lock-up torque converter?
About how do you guy's sell these for? I have a 1990 Corvette with the 700r4 transmission. It currently has a B&M shift kit, but it really annoying when it locks up in 4 gear at 45 mph 😡😡
You can find the lock up kit on our site here : www.monstertransmission.com/700R4-External-Lock-Up-Kit_p_4988.html
And the 7000R4 here: www.monstertransmission.com/700R4_c_3942.html
Or give us a call at 800-708-0087
how's this work with diesel
The lock up kit is designed to work with any 700r4 transmission with the 4th gear pressure port on the passenger side of the case. Diesel or Gas engines.
My 700R4 doesn't have that port.
THX !
Subscribed
how do i get my jimmy 1995 converter to unlock
So it's stuck in 4th gear?
Can i drill and tap the servo cover and use that instead .
Yes, It can be done like that.
Good Pro
mi trasmition 700 de corvette 1984 canbia el primer canbio y se que como en neutral el segundo
Llámenos para hablar con alguien en español para recibir asistencia técnica 800-708-0087
Great Question. To better help you give us a call at 800-708-0087 and one of our techs would be able to give you a hand. Thanks Again
🔥🇺🇸🦅
merica!