Does the 700R4 have overdrive?
Does the 700R4 have overdrive?
The GM 700-R4 is one of the most popular overdrive automatic transmissions used in street rods. And why not, you might ask-they have a 3.06:1 First gear for launching from a standstill, a . 70:1 overdrive Fourth for low-rpm highway cruising, and they can be built to withstand a tremendous amount of horsepower.
What causes a stock 700R4 transmission to fail?
One of the main causes of stock 700R4 failures can be attributed to the Throttle Valve cable (TV) cable. The TV cable on the 700R4 transmission controls line pressure, shift points, shift feel, part-throttle downshifts, and detent (full-throttle) downshifts.
Can you change shift feel on 700R4 cable?
Many people try to defeat the self-adjusting TV cable and tailor shift points of shift feel. However, remember that on the 700R4 and 2004R Transmission the TV cable controls both shift feel (clutch apply pressure) and shift points, you therefore cannot alter one without altering the other.
How does the overdrive work on a 700R4?
Using the connectors at the end of the switch, 12 volts is sent to lock up the 700R4 torque converter when the plunger is pushed in (brake pedal not applied – left). The ohmmeter shows continuity. Depressing the brake pedal interrupts the 12-volt power and unlocks the converter (center). The ohmmeter shows continuity is lost (OL – open loop).
What kind of transmission does a TCI streetfighter 700R4 have?
A TCI Auto StreetFighter 700R4. The time arrived, and the transmission is now installed. The forward clutches, forward race, and overrun clutch hub install. Stock 700R4s only have six clutch plates in the Third to Fourth gear shift pack.
One of the main causes of stock 700R4 failures can be attributed to the Throttle Valve cable (TV) cable. The TV cable on the 700R4 transmission controls line pressure, shift points, shift feel, part-throttle downshifts, and detent (full-throttle) downshifts.
What should the shift point be on a 700R4?
A properly shifting 700R4 should shift from First to Second gear between 15 and 20mph, from Second to Third at 25 to 30mph, and from Third into Fourth at roughly 40 to 45mph. You can raise the shift point by pushing the D-shaped button and moving the cable housing toward the firewall.
Using the connectors at the end of the switch, 12 volts is sent to lock up the 700R4 torque converter when the plunger is pushed in (brake pedal not applied – left). The ohmmeter shows continuity. Depressing the brake pedal interrupts the 12-volt power and unlocks the converter (center). The ohmmeter shows continuity is lost (OL – open loop).
Can you shorten the cable on the 700R4?
However, remember that on the 700R4 and 2004R Transmission the TV cable controls both shift feel (clutch apply pressure) and shift points, you therefore cannot alter one without altering the other. Shortening the Cable : If you shorten the cable (move it towards the adjuster tab), this raises both one pressure and shift point.
