The stock 16 element sprag is in the center, with the 34 element on the right. The valve manifold shown , reroutes hydraulic fluid pressure, keeping the overrun clutch applied at all times except in Fourth gear, reinforcing the roller clutch to support heavy loads adequately. Valve body modifications — , there are a couple of different paths to take. They helped me figure that out and I still have a flex plate issue I ran into again. Tap the hole that feed the backside, or spring side, of the accumulator piston.
And it's not the holding ability or lack of that causes the band to fail, its the shock load placed upon it during apply, which physically breaks the apply anchor off the band. This project could take me much of the winter to rebuild correctly. Will fit all 1991 to 1996 models if 1997 and up reverse servo cover is used. I gave them a call and ordered myself a transmission, it came in 3 weeks. These can be purchased through several different companies that normally offer a warranty on them. Be careful- the thin metal can cut the teflon rings and fingers.
A microswitch can be used to trigger the kickdown, or a factory switch can be used. I have to get it right the first time. Not always necessary but it helps. This transmission has been evolving over time, and in 1996, they added a bolt-on bell housing for trucks. I install the part of the rear servo to help hold the band in place. I inspect bushings and the surface they ride on and perfect.
The gearing to move such a heavy load is a 2. We can custom build each valve body for your application. Here is the kit I plan to get. You can plug the hole with a brass dowel or a check ball. The difference between dismantlers and the local yard all come down to how vehicles are ingested and the organization structure in place. Do not use a plastic piston, they break. I am going to attempt to rebuild this transmission myself as I would like to learn how.
Cool Thank you for posting what you bought and how it turned out. Shifting into reverse while the tires are still turning in the forward direction is the quickest way to tear the lug off the band bar none. You know, I just got a car with a 4T65E transmission. This helps when towing a trailer. I lift it using one hand under the output carrier until I'm ready to set it into the case. After the boost valve modification, you can install an aluminum plug that blocks the modulator valve in place.
Got a 4L80E transmission from Monster, thing came in great, packaged well. We see you haven't yet. I know the price is high but pay now or pay later is what I am thinking. Then I was pulled back in to the transmission world. I must try to find problems to be able to fix it. The 4L80E is the successor to the Turbo Hydramatic 400 transmission.
You could leave 2-3 accumulator function in place and go slightly bigger on the feed hole. Now you see one of the reasons I called Monster transmission. The world of transmissions has developed a lot over the last 20 years. I am getting a 3 can setup of red dye, cleaner and a white color that will show cracks in aluminum. The tranny was the origional and had 380,000 kilometers on it and has been a work truck since it left the dealer.
Me - Im doing bake stands and flat footed launches so I didnt mind spending the extra couple of bucks. Monster Transmissions also offers a rebuild kit that consists of more hard parts, such as solenoids, a shift improver kit, a manifold switch, a harness, and sprags. It is best to adjust rear endplay on the tight side. He asked me to look and see if my transmission had a bolt dead center on the bell housing. Ill put 5 stars but should be 4 because of lead time. To lose or to tight would cause the problem I am seeing here. I don't want this thread to die off so I will post from time to time even if not much has happened.
We put a steel pressure regulator valve to eliminate that common problem. The center support snap ring has a taper on one side. Is the problem electrical or mechanical? It weight about 5600 pounds and this transmission just absolutely sets it off. I mounted the trans 4L80e on a friends engine stand and have been going over the manual and learning the parts inside the pan. Posting this tread so as I go through this tranny I have you folks and I know some of you will share your vast knowledge to this gearhead. I am still unsure if total stock is what I want? So now I see why people say completely rebuild it once its out. I also realize until I get mine all apart I won't really know what parts I may end up needing? It's important to stop the wheels before changing directions no matter what auto trans your running regardless.