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4T45 Transaxle(MN5) (V6,GT)

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  • 4T45 Transaxle(MN5) (V6,GT)



    Type: four speed front-wheel-drive, electronically
    controlled, automatic overdrive transaxle
    with electronically controlled torque converter
    clutch

    Engine range: 3.0L - 3.4L

    Maximum engine torque: 205 lb-ft (278 Nm)

    Maximum gearbox torque: 325 lb-ft (440 Nm)

    Gear ratios: First: 2.95 Second: 1.62 Third: 1.00 Fourth: 0.68 Reverse: 2.14
    Maximum shift speed: 5800 rpm

    Maximum validated gross vehicle weight: 1990 kg (4347 lb)

    Case material: die cast aluminum

    Shift pattern: (2) two-way on/off solenoids

    Shift quality: variable bleed solenoid

    Torque converter clutch: pulse width modulated solenoid control

    Converter size: 245mm (reference) (diameter of torque
    converter turbine)

    Fluid type: DEXRON VI

    Dry: 74.7 kg (164 lb)

    Wet: 85.1 kg (187.6 lb)

    Fluid capacity (approximate): bottom pan removal: 7L (7.4 qt)

    Complete overhaul: 10L (10.6 qt)

    dry: 12.5L (13.2 qt)

    Transfer design: two-axis design, link chain assembly
    2009 Panther Black G8 GT
    334 WHP 347 WTQ

  • #2
    Nice Pic

    I saved it.
    06 Stealth Gray Metallic GT Coupe Dr Speed Stage III Thanks, WCC

    Comment


    • #3
      any way i can get my hands on a more detailed schematic of the tranny.

      Comment


      • #4
        maybe us GT owners can finally get something good for these!!
        TRADED IN BUT NEVER FORGOTTEN: 2006 GT Coupe in granite metallic, 15/5% tint, vinyl side marker deletes, Doctor Speed Stage 3 CAI, RED calipers by DupliColor, RED LED interior lights, 45 LED tail lights, WideView 8000K HID coversion kit, Nokya Artic White fogs installed, running MoBil 1, FIRST ever granite metallic color matched headlights!! Color matched eyelids just finished! GT-R Exhaust installed. R1 Concepts drilled and slotted zinc plated front rotors.

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        • #5
          Re: 4T45 Transaxle(MN5) (V6,GT)

          Delete me.
          2009 Panther Black G8 GT
          334 WHP 347 WTQ

          Comment


          • #6
            Re: 4T45 Transaxle(MN5) (V6,GT)

            Before you give me the I know...holy thread revival

            Anyway...can someone please confirm that the torque rating for the 4T45e is only 205 lb/ft
            If so, and please correct me if I'm wrong, it means that the trans was over powered from the factory as the LX9 has 222 lb/ft stock


            Progression Page - G6P Garage

            They had like 47 different kinds of diapers there so I picked up some ShamWow's and Duct Tape instead

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            • #7
              Re: 4T45 Transaxle(MN5) (V6,GT)

              From the manual
              Maximum Engine Torque 4T45-E 215 lb ft

              According to Wikipedia the LX9 ranges from 213lb ft to 221lb ft. So I guess you are correct.
              Last edited by gface2k; 02-01-2011, 09:05 PM.
              2005 G6 V6, CRABS w/ Custom lower grill ram, Eibach on KYB GR-2, Racingline STB & Street MMI , R1 Concepts Slotted & Cross Drilled w/ Hawk Pads, GTP 18" Hyper White, DDM 3K Fogs.

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              • #8
                Re: 4T45 Transaxle(MN5) (V6,GT)

                Paying someone to install parts on your car, and bragging about it being fast is like watching someone SMURF your wife, and being proud to raise the kids
                sigpic
                Progression Page
                Four Door Mafia

                Forever Pontiac
                Sponsored by: Negrotis™ Racing

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                • #9
                  Re: 4T45 Transaxle(MN5) (V6,GT)



                  Cold air intake, racingline engine mounts, painted engine cover, tinted tail lights, resonator delete, red and black calipers, Flowmaster 50 series, black upper recessed grills,cobalt ss/tc rims, massive audio nano 800w amp, pioneer A series 460W speakers, pioneer double din touch screen headunit and debadge[color=#FF0000][

                  My Progression:http://www.g6performance.com/forum/s...;s+progression
                  JOIN FOREVERPONTIAC.COM...NOW!!!!!!

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                  • #10
                    Re: 4T45 Transaxle(MN5) (V6,GT)

                    Bumpage
                    Can anyone else confirm?


                    Progression Page - G6P Garage

                    They had like 47 different kinds of diapers there so I picked up some ShamWow's and Duct Tape instead

                    Comment


                    • #11
                      Re: 4T45 Transaxle(MN5) (V6,GT)

                      Yea.. GM site says this as well..


                      Current Modifications: 18' Sky Wheels w/ 245/40-18 Tires, 25mm Spacers, Megan Racing Coilovers, Racingline STB, JPE Rear Camber Kit, Energy Suspension Poly Bushings, Painted Calipers, Double Drilled/Slotted Rotors, Ceramic Brake Pads, Street Series MMI, CRABS with FPU, NGK Iridium Plugs, Kingsborne 8mm Wires, Custom Magnaflow Exhaust, Custom 2ga Grounding Kit, DDM 6k HIDs High/Low/Fog, Halos, High/Fog Mod, Chrome Recessed Upper and Lower Grills, GM Ground Effects Kit, GXP Rear Bumper, GXP Sedan Hammerhead, 15% Tint, Custom Painted Engine Cover, Painted Mirror Caps, Tinted Tails, QuickLifts, PAC Audio Input, Interior LED Conversion, Dash LED Accents, 3W LED Trunk Lighting

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                      • #12
                        Re: 4T45 Transaxle(MN5) (V6,GT)

                        Enter: Sonnax

                        Sonnax offers cutting-edge transmission, torque converter and driveline products for the automotive aftermarket. Get hundreds of free tech resources online 24/7.


                        When I worked for Jasper Engines & Transmissions, these were the go-to guys for our Transmission division. The 45 is a little light on documentation, but the 65 has a bit more to peruse through!
                        GT-R Exhaust, 5000°K H.I.D., 15% Tint (All Around)
                        Loud Exhaust, Bright Lights, Dark Tint, Simple.

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