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Just an update in case my experience is helpful to anyone else in the future. Lesson 1: Don't try to use a cheap Chinese tranny jack that is powered by a manually operated 1/2" ratchet to lift one of these beasts! While lowering the old TH400 with the gearbox attached is no problem for one of...

Making more slow progress. Fuel tank is replaced without a lot of drama. Well except for a neighbor that posted the below. And the neighborhood Gestapo that sited me for working on my truck MY driveway. With no transmission sitting in there, I was able to remove to the two bolts for the...

I made some progress and got the 3 speed out without drama. Next I will be replacing the leaking fuel tank with a new one thanks to the good deals that @springer1981 pointed out to me (y) I also have more space now to get the last two remaining bolts from the drinker's side exhaust manifold...

I am not really an tranny expert as you can well tell, but I am curious what this thingy is on the drinker's side of the front? Looks like it is some kind of vacuum diaphram? The 4L80 does not seem to have it so I assume I just plug the hose.

Thank you for your patience with this newbee. One more question is regard to the speedo sensor. Should I use the sensor that came on the 4L80, and just reconnect the speedo cable on the truck? Or use the original speedo sensor assembly that was on the 3 speed tranny? Also, what is this...

Perfect! That was easy! I slightly bent the heat shield a bit and I was able to get a wrench on one of them. The other two are being difficult to get a wrench on. All are loose, but I need to get a wrench on the other end as they keep turning. I am guessing that these two will be the sort of...

Once again I need the wisdom of the collective as I am kind of stuck on a few things doing this 4L80 swap. I am officially retired, as of today. So now I will actually have some time to work on this project. Plus the Florida Inferno has eased a bit so I won't roast while outside. Here is where...

Next question for the experts here. I am almost at the stage where I would remove the old 3 speed tranny. I have the dog house off, exhaust cleared, drive shafts out and just have to disconnect the little things. When you remove the tranny, do you need to support the engine? It looks like the...

One other comment I have to the above while changing your buld - check your grounds on each light if you have anything weird, like lights out, dim, etc. Many of mine were heavily corroded and did all kinds of weird things. I had to change ground wires, bolts on both rears. The front grounds were...

Gosh, every time I come to this site I find more stuff to spend $ on. I noticed the price on Fleabay from the link went up but the price on their private web site was not yet raised. So I figured I would go ahead a bit and I snagged one for the lower price. rofl I have two rooms full of parts...

I am sorry, I did not mention I did indeed install a fresh oil filter. So the oil filter was not the source of the black.

I free admit I am a newbie, and I have two silly oil change questions as my next oil change in coming up soon. M998. Last time I changed the oil, I finished up and started the engine to let it cycle before I checked the oil and discovered that the brand new pristine oil on the dip stick was...

Not to hijack your thread - but is there a "budget" place (hahaha) to by the DWF kit? Lowest cost I could find was $425 plus $100 shipping. Considering adding DWF when I replace the exhaust...

I went through this last spring. This should help you. I just used hoses from a local auto parts store. I took them a sample and matched it up to what they had on hand. The "Complete" kit I purchased was not very complete and the heater hoses and bypass hose was not present and wrong. Found...

I will post this information in case it might be helpful to anyone else. The part number of the bearing they sent as a replacement was 3130-01-203-9870 and that is indeed what I needed. After receiving the correct carrier bearing, I found the instructions at this link were not quite workable...

Ok, I called the people that sent me the kit in the picture. They said I need a different one. They are going to swap out the kit for me. (y)

The one I received has part number 2520-01-356-9189 - was supposed to be for front drive shafts for 92-04 with 4 speed - which I think is the longer front driveshaft that I got with my 4L80. OE/OEM Part Number: 2520-01-189-2135 5-213X 5306-01-190-5760, 5340-01-190-0807 2-70-18X Interchange...

I can really use some help with the installation of the front drive sfat carrier bearing please. The rebuild kit I got looks a bit different over the one that was on the front shaft. I tried looking at the TM's but cannot see what I need - an exploded diagram on the right way to install the...

Well this is turning into quite the adventure. I managed to find a US made carrier bearing rebuilt kit so I managed to avoid all the Chinese crap. The two of us tried pulling the half shafts apart but we are total weaklings and while we could get it to the point to see the splines, but it...

So I just have to pull the two half shafts apart. Yeah, I'm a weakling. Maybe a tug of war using the driveshafts using the local high school football team! Why do I have a feeling that if I do manage to get it apart it is not going to go back together very easily! Thanks for the advice!