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What year 4l80e

This is a discussion on What year 4l80e within the Automatic Transmission forums, part of the Drivetrain category; What year 4l80e will work with my lq4? I found a 98 4l80 4x4 with 90, 000 miles if I ...

  1. #1

    What year 4l80e

    What year 4l80e will work with my lq4?
    I found a 98 4l80 4x4 with 90, 000 miles if I remove the transfer case will this work with my lq4

  2. #2
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    I want to say that there is a difference between the car and truck transmissions -- could be the output shaft length or something. I'll see if I can scare up an answer this evening.

  3. #3
    Quote Originally Posted by pajeff02 View Post
    I want to say that there is a difference between the car and truck transmissions -- could be the output shaft length or something. I'll see if I can scare up an answer this evening.
    Thx pajeff02 I know I have to change the nose when I take off the transfer case

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    Moderator Firebirdjones's Avatar
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    A 98 4L80E at that time would have likely been behind the big block trucks and burbs since I don't believe the 6.0 LS truck engine hit the scene until 1999.

    With that said I'm not sure if you would run into fitment issues, or crank snout to converter fitment issues or not, since you're trying to bolt this onto an LQ4. I'd have to say something is going to be different here, since GM hasn't been too good about swapability since these LS engines hit the scene.

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    Spaz is My Mentor SMWS6TA's Avatar
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    98 T/A w/a little mods...

    what yr is the LQ4?

    Pre 99 LQ4's had a LT1 style crank, while 99< have the LS style crank.

    I know this because of T56's need a different front plate and input shaft if you take a T56 built for a LT1 and want to use on a LS engine.

    I'm pretty sure the same applies to auto's. The Bell housing should match up, it's the other stuff that becomes the issue.

  6. #6
    Lq4 is 04. I'll look for a 4l80e 2000 & up just to be on the safe side of things

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    The difference is convertor hub for the crank. Just need a convertor to match your engine. May need a different output shaft in addition to a tail shafts housing if going in a rwd

  8. #8
    Spaz is My Mentor SMWS6TA's Avatar
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    98 T/A w/a little mods...

    In case you didn't know this about 04' blocks - It's the year that GM in their infant wisdom decide to do a block design change in the middle of the production yr. Some blocks are setup for your classic LS1 head bolt's while the newer blocks are setup for the current head bolt style. How you can quickly tell is the head bolts on the middle row, the 2 outside bolts. If they are shorter than the rest of the long ones you have an older block, if all the same length then you have a newer block. It's only on this block yr that there is this issue.


    It's an important detail when ordering any head bolts. I got almost screwed when they sent me the wrong set, lucky I was able to resale my arp's

  9. #9
    Good info SMWS6TA that's my next purchase thx a mill5

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    Spaz is My Mentor SMWS6TA's Avatar
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    98 T/A w/a little mods...

    I'm pretty well knowledgeable in the LQ4's. Did a lot of reading/researching on combo's and builds for these blocks. Any questions just ask.

    I also have a build thread (in my signature) if you care to look. Beware it's been a little scary the last yr. I spent 3/4's of it trouble shooting a noise and found it just before Christmas. It hurts real bad. But I'm now heading in a direction I should have gone in the first place.
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403 built, breaking it in , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, Monster Stg 4 Clutch, QT SFI BH, MWC DSL, UMI: SFC, PHB, LCA's, LCA Relocation Brackets & TA, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/4.10 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    Horsepower never lies, but is often lied about!

  11. #11
    Yea I subscribe to your thread haven't got a round to reading it yet

  12. #12
    Spaz is My Mentor SMWS6TA's Avatar
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    Have a case of beer when you do...it's a long read
    pajeff02 likes this.

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    Are you looking for a 2wd 4L80e? I have a low mileage 2wd transmission from a 2000 C2500 I would be willing to trade for a 4wd unit.

  15. #15
    Yea I'm looking your a 2wd but I'm located in Phx, Az
    Shipping would be a bit much

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