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  • 4L60e vs. 4L80e

    What is the difference betweent the two which one is better overall?
    "Let the music be your master". Led Zeppelin

  • #2
    Re: 4L60e vs. 4L80e

    4l80e is a way stronger trans. hold way more hp then the 4160e also. First gear on the 4l80e is a lower ratio then the 4l60 for towing reasons.
    Last edited by 6.0vortecchevy; 10-09-2008, 02:41 PM.

    2500 6.0 vortec 6in skyjacker lift with keys on 16in eagle wrapped in good year kevlar 285, LPP LT's, gmpp cam, efi live tuning software, true dual flowmaster 40 series Circle D 2500-2800.

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    • #3
      Re: 4L60e vs. 4L80e

      what are you planning on doing with your truck. They have their advantages. 4l80E much stronger and lower first whereas the 60 is a lot lighter, requires less enginge to push, but is weaker


      1997 3/4ton 454 5.38s Detroit 38.5's. Thorleys Tuned PCM etc

      1997 4Link Build Thread
      http://www.fullsizechevy.com/forum/p...ml#post5907531

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      • #4
        Re: 4L60e vs. 4L80e

        4L60-E 3.06 1.62 1.00 0.70 Light duty
        4L80-E 2.48 1.48 1.00 0.75 Heavy duty


        2007 GMC Sierra SLT Vmax 4.10 gears, Boss MT100 20x8.5 wheels/Cooper Zeon LTZ tires, Extang Bed cover,
        GMC Bedrug, Line of Fire, Denali Grill, GM Performance Intake, Corsa Sport Dual Exhaust, and DiabloSport Predator.

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        • #5
          Re: 4L60e vs. 4L80e

          4l80e actually has a [I]higher[I] first gear, but it does allow the engine to build torque without overpowering the output shaft or the rear diff.

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          • #6
            Re: 4L60e vs. 4L80e

            6l80e IMO

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            • #7
              Re: 4L60e vs. 4L80e

              Originally posted by Heavytruck
              4l80e actually has a [I]higher[I] first gear, but it does allow the engine to build torque without overpowering the output shaft or the rear diff.
              :word:


              1st gear is physically higher but numerically it is a lower number.


              Basically no comparison other then they are both 4 speed autos. A 4L80E with a shift kit is about twice as strong as a fairly built 4L60E, at least according to transgo it is.
              1995 Silverado - ported vortec heads, 4L80E, efans, LT4 Hot Cam, Rear disc brake conversion w/drilled and slotted rotors
              1999 NBS Silverdo - transgo HD2 shift kit, 3 inch dynomax ultra flow, Ford keys and 305/70-16 Mickey ATZs

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              • #8
                Re: 4L60e vs. 4L80e

                anyone know what the ratios are on the 4l70e?
                2006 Chevrolet Silverado Ext. Cab Vortec Max LT3, 6.0(LQ9), black, K&N intake,
                40 series Flowmaster, Line-x bed liner. SS Instrument Cluster, Corvette servo.
                Leveled with 295/70/17 Terra Grapplers.
                93 blackbear tune. :rocking:
                1996 Saturn sl1 5spd 4cyl. 100hp of pure aggression

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                • #9
                  Re: 4L60e vs. 4L80e

                  Originally posted by bad2006z71
                  anyone know what the ratios are on the 4l70e?
                  Same as the 60e.
                  2000 RCSB, forged ls1, 4l80e, t76
                  10.93@124mph 1.58 60'

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                  • #10
                    Re: 4L60e vs. 4L80e

                    Originally posted by Quicksilverado
                    Same as the 60e.
                    Correct, the 4l70e is slightly strengthened 4l65e, which is a slightly strengthened 4l60e, which is and electronically controlled 4l60, which is a renamed 700r4 trans which dates back to the early 80's.

                    I actually dont like the 6l80e/6l90e as the rpm drop between drop netween 1st and 2nd gear is HUGE, even worse than the 4l60e series of trans.
                    First:4.02

                    Second: 2.36

                    Third:1.53

                    Fourth: 1.15

                    Fifth:0.85

                    Sixth 0.67

                    I do like its high 0.67:1 6th gear.

                    I do like the 6l80e/6l90e transmissions torque capacity
                    4l80e 440 lb/ft torque rating

                    4l85e 460 lb/ft torque rating

                    6l80e 469 hp,439 lb/ft torque rating

                    6l90e 452 hp truck, 531 lb/ft truck, 555hp car, 550 lb/ft car.


                    Another great feature of the 6l80e/6l90e transmissions is that they use a clutch to clutch arrangement, no more BANDS. Yeehaw.

                    The best trans IMO would be a 4l80e with a 0.6:1 OD ratio.

                    My favourite GM trans as far as automatic goes, is the thm 200r4.

                    1st 2.74,
                    2nd 1.57,
                    3rd 1.00
                    OD .67,
                    R 2.29

                    It has a slightly deeper 1st to get the car off the line, and a higher OD ratio to keep high rpms down.

                    peace
                    Pauly
                    Last edited by Pauly; 10-10-2008, 11:33 AM.
                    97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

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                    • #11
                      Re: 4L60e vs. 4L80e

                      Originally posted by Pauly
                      The best trans IMO would be a 4l80e with a 0.6:1 OD ratio.

                      Pauly
                      Do what? Over drive on the 4L80E is .75:1 which I don't particularly love but its worth it for the added strength of the transmission.
                      1995 Silverado - ported vortec heads, 4L80E, efans, LT4 Hot Cam, Rear disc brake conversion w/drilled and slotted rotors
                      1999 NBS Silverdo - transgo HD2 shift kit, 3 inch dynomax ultra flow, Ford keys and 305/70-16 Mickey ATZs

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                      • #12
                        Re: 4L60e vs. 4L80e

                        Originally posted by oldred95
                        Do what? Over drive on the 4L80E is .75:1 which I don't particularly love but its worth it for the added strength of the transmission.
                        I was speaking hypothetically, that the best trans for me woudl be a 4l80e BUT with a 0.6:1 OD ratio. Obviously not good for towing, but would work well for my purposes.

                        peace
                        PAuly
                        97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

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                        • #13
                          Re: 4L60e vs. 4L80e

                          L60-e done me no harm behind an l31 for 286 000kms well beaten on. Mind you i have the tow package and it helps keep the tranny cooler. It is very close to it's death, But i have been saying that for 2 years now.

                          Can't be a bad transmission at all. I can only imagine the added benefits of the 5 pinion planetary gears on the 4l65 and the "beast" sun shell. I am definately sticking to a properly built 4L60-e with all the goodies. I am definately regearing to 3.90 or 4.10 ratio because of the excessive loss of power and torque from 1st to second gear. It will help alot over 3.42.

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                          • #14
                            Re: 4L60e vs. 4L80e

                            If you want to swap rear gears, I suggest the 4.10's if you allready have 3.42's. I went 3.08's to 4.10's. It made a difference, but it wasnt as crazy as I thought it would be.

                            peace
                            PAuly
                            97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

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                            • #15
                              Re: 4L60e vs. 4L80e

                              Originally posted by Pauly
                              If you want to swap rear gears, I suggest the 4.10's if you allready have 3.42's. I went 3.08's to 4.10's. It made a difference, but it wasnt as crazy as I thought it would be.

                              peace
                              PAuly
                              :word:


                              I went from 3.08s to 3.73s and other then being able to feel the corvette servo on the 1-2 shift and running more rpms at highway speeds I really didn't feel much difference.
                              1995 Silverado - ported vortec heads, 4L80E, efans, LT4 Hot Cam, Rear disc brake conversion w/drilled and slotted rotors
                              1999 NBS Silverdo - transgo HD2 shift kit, 3 inch dynomax ultra flow, Ford keys and 305/70-16 Mickey ATZs

                              Comment

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