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What does a 700r4 lockup do?
The GM 700-R4 & 200-4R transmissions utilize a lock up converter to help create a more efficient transmission. It takes stress off the fluid coupling of the torque converter and it helps decrease the amount of heat being generated at higher cruising speeds.
How does the torque converter lockup work on 700r4?
The TCC solenoid engages, locking up the converter. When the trans downshifts to Third gear, the pressure switch opens, interrupting flow through the relay to unlock the TCC solenoid. Alternatively, the driver can unlock the converter at any time by toggling the dash switch to the “Off” position.
What does a lockup kit do?
A lock-up kit gives the driver full control of the torque convertor. This does two things; first it gives you 100% full and complete engine braking on all downhill descents, both on-road and off-road, on command. This is perfect when towing on-road and off-road and while in low range.
How do I know if my 700r4 has lockup?
To tell if the converter is locking up in the early GMs try this- Once at interstate cruising speed(no load other than cruising) , very lightly touch the brakes with your LEFT foot, while maintaining your current speed and accelerator position.
At what speed does a torque converter lock-up?
approximately 40 mph
Recently developed torque converters have had a “lockup” feature added to reduce this energy loss and improve mpg. This lockup feature will not engage until the vehicle reaches approximately 40 mph.
Do torque converters need a lockup?
A lockup torque converter is important in automatic transmissions to reduce slippage. And once slippage is curbed, heat generation is minimal while fuel economy is improved.
Do I need a lock up converter?
A lockup torque converter is important in automatic transmissions to reduce slippage. And once slippage is curbed, heat generation is minimal while fuel economy is improved. This and many more have been outlined above to give you an insight into this component and why you may need one.
What is the plug on the side of a 700R4?
the plug on the left side only controls the converter clutch. you really need to use the lock up feature,if not you will eventually burn up the trans. if you do a lot of interstate driving.as the converter will not get any cooling lube with the lockup feature not working.
How much torque can a stock 700R4 handle?
I’ve read a stock 700r4 can handle 350 lb-ft of torque. But some were rated higher depending on it’s application. 1989 was not a high horsepower maybe 230 or torque motor if I recall correctly. You could just have that trans freshened up to handle new motor.
What is the difference between a lock-up and non lockup torque converter?
Towing will add heat to the transmission. A non-lock-up torque converter will add more heat. With a lock-up when you get to speed, the torque converter will lock-up, which creates a direct drive from engine to transmission. No additional heat will be added into the tranny fluid due to slippage during operation.
What is the difference between a lock up and non lockup torque converter?
How do I test my torque converter lock up?
Put the pedal to the metal While pressing on the brake pedal, press the accelerator to the floor for two to three seconds. Don’t exceed five seconds, or you risk blowing out the transmission. The RPM the engine maxes out at is the stall speed.
What does the 700R4 Lock Up Kit do?
The 700R4 External Lock-up Kit This kit will enable the driver to control the operation of the torque converter Lock-up. The switch will allow driver to turn the lock-up function off during in-town driving and on during high speed/highway driving.
How does the lockup kit work?
The lockup kit will allow you to control this by allowing you to activate or deactivate the feature at will. Since this kit is externally wired, there is no need to drop the pan to install the system.
Do I need a lockup kit to install lockup?
Lockup is needed when driving on highways or in high speed situations. The lockup kit will allow you to control this by allowing you to activate or deactivate the feature at will. Since this kit is externally wired, there is no need to drop the pan to install the system.