4L80 swap tips and tricks.

[Supercharged111]

It's a 12208322 OS. I think the reason this one was used is because the express van is the only van truck that still came with the 5.7L in 01.

Is there another way?

Yes, change over to a 5.7/4L80 12212156 van OS.

 

[Astro]

Yes, change over to a 5.7/4L80 12212156 van OS.

Ok I will look into that tonight. Thanks again.

 

[df2x4]

Yeah agreed. I believe the tube will fit and light up, but the dipstick itself won't be the right length. Or maybe the right length with the wrong indicator marking position. I believe someone on this forum took some pictures and measurements for this.

Dipstick should be the same between 60E and 80E, if I understand correctly it looks like the length of the fill tube determines where the indicator markings sit in the pan.

Here's diagrams for 60E and 80E fill tubes from Nemiga, notice the dipstick part number is the same for everything but there are a few different fill tubes depending on application.

60E (M30):
https://nemigaparts.com/cat_spares/epc/chevrolet/54c-c/04/tc04-033/

80E (MT1):
https://nemigaparts.com/cat_spares/epc/chevrolet/54c-c/04/tc04-089/

 

[Astro]

Dipstick should be the same between 60E and 80E, if I understand correctly it looks like the length of the fill tube determines where the indicator markings sit in the pan.

Here's diagrams for 60E and 80E fill tubes from Nemiga, notice the dipstick part number is the same for everything but there are a few different fill tubes depending on application.

60E (M30):
https://nemigaparts.com/cat_spares/epc/chevrolet/54c-c/04/tc04-033/

80E (MT1):
https://nemigaparts.com/cat_spares/epc/chevrolet/54c-c/04/tc04-089/

Oh that's interesting! Thanks for linking those! I wish they were available for purchase dang it. I really don't like the one I have.

 

[Astro]

Yes, change over to a 5.7/4L80 12212156 van OS.

Welp, I tried, but cannot find any 4wd versions of this tune. I went through a lot of them today and have been unsuccessful.

 

[Supercharged111]

Welp, I tried, but cannot find any 4wd versions of this tune. I went through a lot of them today and have been unsuccessful.

I don't think you will, hence the need to change your OS. My dually has the crappy OS but that's on my short list to change.

 

[Astro]

I don't think you will, hence the need to change your OS. My dually has the crappy OS but that's on my short list to change.

No, I get you, but I can't find one to change to that has all three criteria. 4wd, 4l80, and 5.7L. I even thought Of changing to a 6.0L 4WD 4L80 tune and swapping in a 5.7L, but can't find a usable 5.7L segment that matches the 6.0L OS.

So frustrating! lolol

Shoulda LS swapped LOL

 

[Supercharged111]

No, I get you, but I can't find one to change to that has all three criteria. 4wd, 4l80, and 5.7L. I even thought Of changing to a 6.0L 4WD 4L80 tune and swapping in a 5.7L, but can't find a usable 5.7L segment that matches the 6.0L OS.

So frustrating! lolol

Shoulda LS swapped LOL

??? I don't think you're looking in the right places, you're far from the first to do this. @L31MaxExpress should have a 12212156 van tune in HPT format. Is your 6.0 4L80 4x4 tune the same OS? Even still, I know HPT has the 4lo stuff unlocked to just turn on.

 

[Astro]

??? I don't think you're looking in the right places, you're far from the first to do this. @L31MaxExpress should have a 12212156 van tune in HPT format. Is your 6.0 4L80 4x4 tune the same OS? Even still, I know HPT has the 4lo stuff unlocked to just turn on.

I've been in contact with l31, but haven't heard back yet. Also, what does unlocked mean?

Can you give me some pointers? I can make the changes if I know what to change for sure. I'm not sure what to turn on and where.

I WANT TO LEARRRRRRNNNNNNN!

 

[Supercharged111]

I've been in contact with l31, but haven't heard back yet. Also, what does unlocked mean?

Can you give me some pointers? I can make the changes if I know what to change for sure. I'm not sure what to turn on and where.

I WANT TO LEARRRRRRNNNNNNN!

I have a screenshot of the 4lo stuff posted by @Mangonesailor in my build thread.

My K1500 DD Tow Pig

Now this has me curious, I'm going to have to open my tune and see what it shows for 4lo. As far as I know everything functions correctly. I'd love a screenshot of the 4lo stuff. I went poking around my friend's HPT and couldn't find it.

www.gmt400.com