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I wanted to post another question regarding installing the TPS so I don't make an expensive mistake. I got off the Fan CutOff Switch. There is a black cam for the Fan CutOff switch left on the shaft as shown below. I assume this black plastic cam needs to be removed. Sounds like I need to...

I am just about at the point of installing the TPS on my 4L80 conversion. I wanted to ask about relocating the Fan Cutoff Switch. Might you have any pictures on where / how you relocated the Fan Cutoff Switch?

Notice gap at right arrow, and missing bolt hole on left. The holes on the right side of the picture appear to be ok. I guess if I had good fab skills I could make it fit. But I don't!

Two piece

A minor set back that I can use some advice on please. Looks like the flywheel dust cover for the TH400 is different than the 4L80? Now that I tried to mount the original TH400 dust cover the bolt holes seem to be off and it leaves a gap near the bottom of the 4L80. Aside from rummaging...

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...