4l60 trans - Impala Tech
Transmission & Driveline Transmissions & Differentials

 
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post #1 of 5 (permalink) Old 12-12-2019, 06:27 PM Thread Starter
 
 
Join Date: Jul 2019
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4l60 trans

Doin a LS1 swap with 4l60e trans. Was wondering how to add gas pedal and retrofit linkage to the transmission. 64 impala SS
And the car the motor came from was a 2002 Z28
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Tony Dinh is offline  
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post #2 of 5 (permalink) Old 12-12-2019, 09:21 PM
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4L60 doesn't have any linkage. It uses a TV cable that attaches to the carburetor (or in the case of a 2002 Camaro the throttle body). The TV cable has to be adjusted correctly or the lack of line pressure will burn up the tranny in the first fifty feet that you drive it. Gas pedal bolts to the fire wall and is a cable not a rod on a bell crank.

Big Dave
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post #3 of 5 (permalink) Old 12-13-2019, 05:27 PM
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Incorrect, Dave. He's using a 4L60E, which is computer controlled. The linkage is just a matter of connecting up the column or the floor shift to the pawl on the side of the trans. You can get OD 4 gear lens inserts for the dash/floor if you want.



Tony, you either use a DBW (drive by wire) pedal/TB setup, or you convert to a cable throttle body. Tell your PCM programmer what you are using.

Two doors, four doors, wagons, and ragtops.
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post #4 of 5 (permalink) Old 12-13-2019, 07:41 PM
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Ok but without a TV cable it won't know what kind of load the tranny is seeing and the line pressure will be too low.

As far as the tranny shifting linkage is concerned, you can use the PowerGlide linkage (without the down shift bell crank) and the tranny will work just in Reverse, Park and Drive, just fine. You will only be able to down shift manually though if you have a TH350 shift linkage. Then you can get from drive to second gear, but not to be able to manually shift into low gear. To do that you would need the linkage for a 700R4 or a 4L60e equipped car.

The computer controls shift points and how hard it shifts based upon the speed sensor and the TV cable. It outputs information used by the ECU to control the ignition timing and tells the speedometer to move on some models with an electric speedometer. Trucks retained a manual speedometer but the gears where in a long tail housing not suitable for a car (requires cutting down the drive shaft).

Aftermarket sells linkage, shifter lens for OD trannies, as well as Cable shifter if you want to slap a pistol grip (or intend to drag race it since the NHRA requires a reverse lock out shifter).

Big Dave
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post #5 of 5 (permalink) Old 12-13-2019, 08:39 PM
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Still not correct. The 4L60E does not use a TV cable.

Two doors, four doors, wagons, and ragtops.
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