Can a 4L80E be converted to full manual control?
Can a 4L80E be converted to full manual control?
So this article provides a tried-and-true procedure for converting any 4L80E transmission to full manual control, eliminating the need for a PCM. The 4L80E uses shift solenoids A and B to control upshifts and downshifts in all forward ranges. The solenoids are both powered with system voltage when the ignition is on.
What kind of case does a GM 4L80E have?
Like the other GM automatics, the 4L80E featured a die-cast aluminum case. Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available.
Where is the correct fill level on a 4L80E?
Correct reading means that “FULL” Is level with the pan rail. The flat part of the case where the pan bolts/seals. Right at that level or 1/8″ above it the correct fill level. I recommend doing it IN THE CAR with the dipstick permanently mounted. Get the trans in and bolted up to the cross member…then drop the pan and check the stick.
How does the 99up model 4l80e-97 work?
Center Support The 99up model 4L80E’s have a different center support, planetary carriers, sun shaft, and also use a new shim under the rear bearing. The new planets have slight longer gear teeth (.075”) than previ- ous design, and the changes described on this page were required to “re-center” the geartrain.
Like the other GM automatics, the 4L80E featured a die-cast aluminum case. Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available.
Do you need to replace boost valve on 4L80E?
Always replace the boost valve as they are always worn. Doctor Steve likes an upgraded version with O-rings and a progressive spring. Another trick is to use a boost valve with o-rings and a progressive rate spring. This offers better performance and a longer life. It’s not a necessary step, but while you’re inside the transmission]
What’s the max load capacity of a 4L80E?
The 4L80E has a max torque rating of 440 lb.-ft. of torque, giving it a max load capacity of 18,000 pounds. The gearing to move such a heavy load is a 2.48 first gear, 1.48 second, 1.00 third, and 0.75 overdrive. These transmissions can be found behind 4.3 to 8.1-liter gas engines and 6.5 to 6.6-liter diesel engines.
Center Support The 99up model 4L80E’s have a different center support, planetary carriers, sun shaft, and also use a new shim under the rear bearing. The new planets have slight longer gear teeth (.075”) than previ- ous design, and the changes described on this page were required to “re-center” the geartrain.
