Thread: Looking for Trans Rebuild Info

Hi Rem, is your car stock or will it remain near stock? There are a lot of upgrades for these transmissions and a lot of different ways to build them. There are also quite a few common problems with them and parts that should be looked at during a rebuild whether you had issues or not. The link below is one to my website that has a lot of usefull info on this trans.

4T65E Transmission Info

You will need to get a trans tech manual to walk you through the process but it isnt going to tell you the common stuff to look for. As a minimum you should replace all the solenoids, get a hardned 4th clutch hub as the stock ones strip out over time which makes you lose 4th, replace the clutches and steel plates, gaskets, seals, molded pistons, inspect and replace if needed input clutch piston, inspect bands for wear and burning, Transgo shift kit which includes an upgraded boost valve and new accumulator springs, and also you should replace the torque converter with a reman one. This is a basic list and the rest depends on the condition of your transmission after you tear it apart. If you have any questions along the way ask away

That kit will give you the "soft" parts so to say for a rebuild and is a good quality kit at a reasonable price. That kit does not include ANY hardparts such as gear train, drums, sprockets, chains, shafts, bushings, bearings and those are things that will need inspected once it is apart to determine the need for replacement. You also need to replace the 4th clutch shaft with a hardened one. There are a lot of great converter companies out there, and there are also bad ones. I have used a number of different ones and here are a few to help your search.... Precision-I currently use these, CVC, Dacco, ATC, ACT and there are a few others I have used over the years but any of those are good quality converters. Again there are many more out there but I cant speak for them, well I know a few bad companies but I will leave that out. I would stay away from a Napa or Autozone converter if they would even sell one and go straight to a trans shop or I could sell you one if that helps out.

The hardened 4th clutch shaft should be mandatory regardless of what the old one looks like, it WILL go bad at some point which leaves you with no 4th gear. The other hardparts all need to be inspected before replacement as there is no sense in wasting money on parts you dont need. As far as the converter you should replace it with the same code that is on the original converter unless you want a higher stall speed. They dont rate stock converters as you would expect, or like what aftermarket companies advertise them to be. Mix N Matching original torque converters is trial and error unless you know of one that will give you a desired stall speed but I always replace them with the exact same code unless you want a higher stall speed and every car will respond different so it is hard to say an exact number.