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Old Yesterday, 07:17 PM   #1
Woodyjiw
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Default LS Swap thoughts

Hey all, looking for some opinions on a LS swap into my 85 K5.

I've been looking to buy a whole vehicle (truck or van) with a 5.3 or 6.0. I think either way I go I'm leaning on using a 4l80 instead of the l60.

-If I went with a van 6.0/4l80 combo would I be able to pull the tail shaft to install a trans case or do I need a 4x4 trans?

-The reason I'm also thinking whole vehicle is to get all parts needed for the swap instead of sourcing it individually. Am I wrong for thinking this way?
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Old Yesterday, 07:17 PM   #2
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If only you knew somebody who just did a swap
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Old Yesterday, 07:44 PM   #3
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Depending on the year of the 4l80e, the 2wd output splines can run almost the entire length of the shaft. If you get the 01 and up (I think) you cut the output shaft to your desired length and install your 4x4 adapter. We've done this to motorcity machines, deak racing, and Gilbert bros ultra 4 transmissions.

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Old Yesterday, 08:16 PM   #4
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If you need to change the shaft, the entire trans has to come apart, valve body and all.
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Old Yesterday, 10:22 PM   #5
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Originally Posted by CheapThrillB2 View Post
If only you knew somebody who just did a swap
Did u get everything u needed from ur donor vehicle? I know u had to change a couple things for room but I don't think I'll have that problem.
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Old Today, 12:35 AM   #6
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Quote:
Originally Posted by Tom View Post
Depending on the year of the 4l80e, the 2wd output splines can run almost the entire length of the shaft. If you get the 01 and up (I think) you cut the output shaft to your desired length and install your 4x4 adapter. We've done this to motorcity machines, deak racing, and Gilbert bros ultra 4 transmissions.
Who is this guy "Tom"?
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Old Today, 05:53 AM   #7
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Who is this guy "Tom"?
Same person I've always been, I just had a name reassignment.
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Old Today, 06:01 AM   #8
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Couldn't handle all the political talk about you?
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Old Today, 06:12 AM   #9
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Couldn't handle all the political talk about you?
Maybe a little of that and maybe a request from my new employer.
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Old Today, 06:12 AM   #10
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Originally Posted by Woodyjiw View Post
Did u get everything u needed from ur donor vehicle? I know u had to change a couple things for room but I don't think I'll have that problem.
My donor was a 2wd truck. but yes, i got everything i pretty much needed. More importantly is everything was made to work with itself and was no guessing on getting random parts from different vehicles to work. Only real thing I had to change was my output shaft and tail housing.


If you found a truck donor, you'd be even better off. Being a full size truck to full size truck swap, you could take advantage of alot more parts getting recycled between the trucks lower the swap cost.

I looked around for about a month, before finding a smashed truck. I got a pretty good deal on it.
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