Jump to content

4l80e tranny swap

Capitalcity

Recommended Posts

Capitalcity New Member

Capitalcity

Posted
Posted

I have a tranny out of a 6.5l chevy diesel. that was rebuilt. The motor went out so i pulled the rebuilt tranny and scrapped the truck. I now have a 2002 chevy 2500 6.0 gas that i want to put it in. they are both 4l80es. the only difference i have seen are the return lines. The 02 lines are larger and have different connections. (i believe they are referred to has quick connects?) as apposed to the holes on the tranny that are just the double flare thread ons. Can the lines be reduced without causing problems? if so how?

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

You need a tech to show you , seems your experience level is less than this simple job

 

They are just fittings

Friz2 Enthusiast

Friz2

Posted
Posted

You should probably talk to a GM tech on this. These new trannies are programmed for a specific motor/truck combo and may not cross without some remapping of the motor or tranny.

Unfortunately, this ain't the good ol' days of vacuum shifting automatics anymore...

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

I believe he is swapping 80s not a 60 to an 80 ,

 

6.5s typically had 80s behind them

 

I had a 700 and a 60 behind my old 6.2,diesel 1/2 tons (85 and 93)

 

Maybe he can clarify , he saying the fittings on the tranny are different for cooler lines .

It should plug and play but I not sure if torque converter stall is different ( diesel to a gas )

 

Maybe TC mount holes in flywheel are different , who knows

Capitalcity New Member

Capitalcity

Posted
  • Author
Posted

They are both 4l80e's. The converter has a different stall speed. (I had already planned on replacing it) The 02 has an extra hole on the top of the bell housing. (7 rather than 6) The flywheel bolts all line up. I go my question answered. We just had to cut the lines back and use a compression fitting to go to the smaller line. They also make fittings if you were putting a newer tranny into the older truck to adapt to the push lock connectors that gm went to in the later models.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • 2017Z
      2020 Trailboss 6.2 replacement

      By 2017Z · Posted

      Looking for advice from this group. Took my flawless 2020 6.2 TB to an unnamed shop for routine rear brakes and oil change. Tech forgot to put oil back in after the full service and needles to say, destroyed my engine.  It’s all on their shop video so they are responsible.   I had my Chevy dealer do the analysis and they confirmed its compromised and said engine replacement. The manager said they only get GM reman engines from GM with full 3 yr warranty and the one they would put in is not same as what’s they are swapping out on 21-25 for recall.    I am looking for advice why that would be a different engine because obviously I had the good 6.2 year and replacing it has my concerns with that recall for 21-15   Also what’s the pros and cons of accepting the engine swap vs telling the shop that bricked the truck to pay up so I buy a new truck. I’m concerned about stigma resale eventually if I just decide to get rid of it after the swap or other issues showing up after the swap out.  
    • GN2018
      AFM Disabler Question

      By GN2018 · Posted

      Just looked up my records.  I've never gone over 5000 miles between oil changes.  At 46K miles, I have 10 oil changes.  I hope that will help.  I also installed the disabler last year.  I've still had a few times when it didn't seem to engage (which I can tell because the start stop feature kicks in), but for the most part, I think it's working.  For some reason, GM did not include the number of cylinders running in the information screen like I had on other models.  In my Cadillac, it shows me when it's running on 4 cylinders on the fuel milage screen.  I can't find that on my '21 Denali.
    • davester
      Wiring Help, Please

      By davester · Posted

      you might read through the info on gmupfitter.com for your truck, to find a good power source.
    • Grumpy Bear
      AFM Disabler Question

      By Grumpy Bear · Posted

      Melling I believe is/was the OEM on the lifters who explored this problem some years ago. The white paper they generated on the topic indicated two items of note when I read it. 1.) They only fail on the switch. Prevent the switch, prevent the failure. 2.) The majority fail due to deposits messing up the timing of that switch. Anyway that's what I got from it.    Mine have always been active, 195K+ now, and my oil maintenance is surgically clean.    Of course this assumes good parts. That is no heat treat issue or machining flaws. I get comfortable that these issues are in the rearview mirror by about 30K. IMHO naturally. 
    • Chuck FB
      2 speed transfer case optional now?

      By Chuck FB · Posted

      Yes, the key seems to be with the half tons that if it has the Z71, then it definitely has the two speed. What got me was that the two speed AND the lower geared towing package option could not be chosen together the last few years unless it was mated up to the 6.2. Want the 3.0 duramax and 3.73 tow gears ... nope, can't get the two speed transfer case ( neighbor son realized that after he had bought his used 3.0 half ton .. where the frick is the low range ? ! ).    I am still unsure which truck series, the half ton or the HD truck that the original poster is referring to for sure other than yes his question is in the HD section of this forum but that doesn't guarantee the question got asked in the right section.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...