4L80e in a k-5?

[Cornfield creations]

Is it even possible? I know these are a lot longer than my TH350. I would love the strength and especially overdrive. Just wondering if anyone done it?

 

[83ZZ502_Jimmy]

Possible? Yes.

Have I done it? Yes. A few others here have too...

 

[onlychevy6]

And yet there is no write up on how it is done?

 

[83ZZ502_Jimmy]

If I had the time to do a writeup I would... My brother and I did this swap on the '87.

Perhaps I'll start working on one, if there is sufficient interest... This swap and cheap do not go in the same sentence...
Plus, we are still trying to get the shift programming better.

John

 

[broncoman6524]

in one of teh petersons articles aboot red sled. they put one in. they used a standalone computer for it.

So YES it IS possible. if i was to redo my tranny i would have done the 4l80 instead of just a 400.

 

[PsRumors]

I am about to do the conversion in a Suburban. I will take pictured. As for a formal complete nut and bolt I doubt I do that.

 

[Leper]

Expensive to do. Tunnel mods required. Stick with the 400.

 

[sandracer799]

Expensive to do. Tunnel mods required. Stick with the 400.

Just put one in my Blazer and did not have to do any mods to the transmission tunnel at all.

But expensive is correct

 

[Babaganoosh]

Anyone have a figure on how much the swap cost?

 

[sled_dog]

Expensive to do. Tunnel mods required. Stick with the 400.

It is almost entirely the same as a TH400 why would you need to modify the tunnel? Not saying it isn't true, just trying to picture what the problem is.

 

[sandawgk5]

Anyone have a figure on how much the swap cost?

I have seen figures around $2000 for the tranny and the standalone computer.

Dick

 

[sandracer799]

I have seen figures around $2000 for the tranny and the standalone computer.

Dick

Thats about right.

I did mine for right around $2100 but I got a good deal on a tranny

 

[kgblazerfive]

If anyone figues out how to get a 205 behind one of these in a 98 let me know the 205 is the easy part its the 98 computer stuff thats the issue

 

[Babaganoosh]

Ouch, alot more then I thought, but then again I guess its not to bad for what your getting.

 

[PsRumors]

I just bought a Compu-Shift Controller and Trans from Bow-Tie Overdrive which came to $3720. Then you have the HAD driveshafts which will be $650. Not to mention the rebuilt 205 at $650. Then of course you're putting a new trans in so you need to at least flush the trans cooler in the radiator, at another $220 it's easier to replace it and know for sure it is clean. Of, and the cooling lines are another $130. Then if you do like I did and buy the 4l80e to figure 8 205 adapter that is another $320.

That figure comes to $5690. Now it can be done MUCH cheaper but I got burned on 1 trans I wasn't going to get burned on a second. This should be a very stout setup with no worries for years to come.

 

[muddybuddy]

ive already got a 4L80E, complete wiring harness and 2 stand alone computers for my swap, which has been postponed until further notice

 

[PsRumors]

muddy, for less than a grand you could be complete.....what's the hold up? I hope to be able to have mine done with in the next 3 weeks. Have to wait on Bow-tie to get the trans too me.

 

[83ZZ502_Jimmy]

Expensive to do. Tunnel mods required. Stick with the 400.

Expensive, but worth it..

No tunnel mods at all required.

John

 

[Cornfield creations]

How much longer is that trans and 205 combo vs. a 350/203 combo?

 

[muddybuddy]

muddy, for less than a grand you could be complete.....what's the hold up? I hope to be able to have mine done with in the next 3 weeks. Have to wait on Bow-tie to get the trans too me.

well its for a diesel, so i believe i have everything i need to do the swap, but ive got a lot of other stuff on my plate, and need to get everything else done before rausch creek in july