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  • 4 Speed Automatic Transaxle Info

    4 Speed Automatic Transaxle Info

    The following pages contain information on specific transmission models from the 4T60, 4T60E and 4T65 family(4T40/4T45 and 4T80 information may be in the works, stay tuned). For now, it is NOT an all-inclusive list, but any missing information would be appreciated.

    Miscellania:

    4T60E Differentials with an asterisk are "fine pitch" final drives. Sun gears, internal ring gears, and pinion gears are NOT interchangeable with other final drives.

    4T65E with "IMS" have the newer type of shifter position sensor, called the "Internal Mode Switch", as opposed to the style found on 4T60E and early 4T65E transaxles.

    4T65E Stall Speed Info:

    these are approximate stall speeds based on the K-factor and TC size. YMMV, but they should give a good estimate as to which ones will stall higher or lower.

    245-115 = 1340
    245-163 = 1900
    245-177 = 2060
    245-180 = 2100

    258-115 = 1410
    258-133 = 1630
    258-155 = 1900
    258-164 = 2010
    258-179 = 2200

    4T80 General Info:

    Maximum Engine Torque: 300 Ft-Lb
    Maximum Gearbox Torque: 461 Ft-Lb
    Maximum Gross Vehicle Weight: 4750 Lb
    265mm Torque Converter
    269 Lb Dry
    295 Lb Wet
    15 Quart Capacity

    gearing:
    2.69
    1.626
    1.0
    .681

    39/39 Chain Ratio
    Differentials: 2.84, 3.11, 3.48, 3.71

    maximum shift speeds: 6400RPM

    All have a 39 tooth input speed reluctor?
    All have a 31 tooth output speed reluctor(VSS)?

    1995 G-Body(Aurora) 4T80E
    AKN 3.48:1 FDR (has higher shift points)
    ZYN 3.71:1 FDR

    1997-up
    G:
    MDN (has higher shift points)
    MSN

    1997-up
    E & K: AAN(has higher shift points)
    K: MLN


    1985 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    CM, CP 2.8 V6 HO A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    CN, CW 2.8 V6 A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    HA, HJ, HT 2.8 V6 (Canada) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    AF, AM, AY Cadillac 4.1 V8 Cadillac C-Body & Limo 3.33 37/33 2.97 FM8C 1525
    AR Cadillac 4.1 V8 Cadillac C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    BS, BU, BN, BV Buick 3.0 V6 C-Body: Oldsmobile, Buick 3.06 35/35 3.06 FE4B 1865
    OB, OY Oldsmobile 4.3 V6 (Diesel) C-Body: Oldsmobile, Buick 3.06 35/35 3.06 FY7B 1525
    BA, BC, BR Buick 3.8 V6 A/C-Bodies: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    BX, BW Buick 3.8 V6 A/C-Bodies: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FM4B 1895

    1986 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    CNH, CFH, CMH 2.8 V6 HO A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    HJH 2.8 V6 (Canada) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    HBH 2.8 V6 (Venezuela) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick, Cadillac 3.33 37/33 2.97 FD6B 2095
    BFH, BCH, BDH Buick 3.8 V6 (High Altitude) A-Body: Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    CTH 2.8 V6 HO (High Altitude) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick, Cadillac 3.33 35/35 3.33 FD6B 2095
    BPH Buick 3.8 V6 (High Altitude) A/C-Bodies: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    BAH Buick 3.8 V6 C-Body: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FM4B 1895
    BLH Buick 3.8 V6 C-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FL4B 1895
    BGH Buick 3.8 V6 (High Altitude) C-Body: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    ACH, AMH, AFH Cadiallac 4.1 V8 Cadillac C-Body 3.33 37/33 2.97 FM8C 1525
    AJH Cadiallac 4.1 V8 (High Altitude) Cadillac C-Body 3.33 37/33 2.97 FM8C 1525
    ARH, ADH Cadiallac 4.1 V8 C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    BMH, BSH, BZH Buick 3.8 V6 E-Body: Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    BTH, BYH Buick 3.8 V6 E-Body: Oldsmobile, Buick 3.33 37/33 2974 FL4B 1895
    BQH Buick 3.8 V6 (High Altitude) E-Body: Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    AAH, ABH, AYH Cadillac 4.1 V8 Cadillac E/K-Bodies 3.33 37/33 2.97 FM8C 1525
    BBH Buick 3.8 V6 H-Body: Oldsmobile, Buick 3.06 37/33 2.73 FL4B 1895
    BCH, BDH Buick 3.8 V6 H-Body: Oldsmobile, Buick 2.84 375/35 2.84 FL4B 1895
    BHH Buick 3.8 V6 H-Body: Oldsmobile, Buick 3.06 35/35 3.06 FL4B 1895

    1987 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    CAH 2.8 V6 HO A-Body 3.33 35/35 3.33 FD6B 2095
    CBH 2.8 V6 A-Body 3.33 35/35 3.33 FD6B 2095
    FCH, FLH Buick 3.8 V6 A-Body 2.84 35/35 2.84 FL4B 1895
    ACH Cadillac 4.1 V8 C-Body 3.33 35/35 3.33 FL8C 1525
    ADH, ARH Cadillac 4.1 V8 C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    ALH, AFH Cadillac 4.1 V8 C-Body & C-Body Limo 3.33 37/33 2.97 FM8C 1525
    FTH Buick 3.8 V6 C-Body 3.33 37/33 2.97 FL4B 1895
    FNH Buick 3.8 V6 C/H-Bodies 2.84 37/33 2.53 FL4B 1895
    FBH, FKH Buick 3.8 V6 H-Body 3.06 37/33 2.73 FY4B 1895
    FSH Buick 3.8 V6 H-Body (Export) 2.84 35/35 2.84 FL4B 1895
    HAH Buick 3.8 V6 H-Body (Canada) 3.06 37/33 2.73 FY4B 1895
    HCH Buick 3.8 V6 H-Body (Canada) 3.33 37/33 2.97 FL4B 1895
    AHH Cadillac 4.1 V8 E/K-Bodies 3.33 37/33 2.97 FL8C 1525
    FRH Buick 3.8 V6 E-Body 3.33 37/33 2.97 FL4B 1895
    FZH Buick 3.8 V6 C-Body 2.84 35/35 2.84 FL4B 1895

    1988 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    AAH Cadillac 4.1 V8 C-Body 3.33 37/33 2.97 FM8C 1525
    ABH Cadillac 4.1 V8 E/K-Bodies 3.33 37/33 2.97 FM8C 1525
    AFH Cadillac 4.1 V8 Limo 3.33 37/33 2.97 FM8C 1525
    ANH Cadillac 4.5 V8 C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    ATH Cadillac 4.5 V8 E/K-Body (Export) 3.33 37/33 2.97 FM8C 1525
    BJH Buick 3800 V6 H-Body 3.33 37/33 2.97 FL4B 1895
    BKH Buick 3800 V6 C-Body 3.06 37/33 2.73 FY4B 1895
    BRH Buick 3800 V6 E-Body 3.33 37/33 2.97 FL4B 1895
    BTH Buick 3800 V6 C-Body 3.33 37/33 2.97 FL4B 1895
    BYH Buick 3800 V6 E-Body 2.84 35/35 2.84 FL4B 1895
    CFH, CMH, CRH, CWH, CXH 2.8 V6 A-Body 3.33 35/35 3.33 FD6B 2095
    CTH 2.8 V6 W-Body 3.33 35/35 3.33 FD6B 2095
    FBH Buick 3800 V6 H-Body 3.06 37/33 2.73 FY4B 1895
    FCH Buick 3800 V6 A-Body 2.84 35/35 2.84 FL4B 1895
    FJH Buick 3800 V6 H-Body 3.33 37/33 2.97 FL4B 1895
    FSH Buick 3800 V6 C/H-Bodies 2.84 35/35 2.84 FL4B 1895

    1989 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    AAH, ANH Cadillac 4.5 V8 C-Body 3.33 37/33 2.97 FM8C 1825
    ABH, ATH Cadillac 4.5 V8 E/K-Bodies 3.33 37/33 2.97 FM8C 1825
    AFH Cadillac 4.5 V8 Limo 3.33 37/33 2.97 FM8C 1825
    AJH Cadillac 4.5 V8 E/K-Bodies 3.33 35/35 3.33 FM8C 1825
    BAH, BDH Buick 3300 V6 A-Bdoy 3.06 37/33 2.97 FY9B 1895
    BFH Buick 3300 V6 A-Bdoy 3.06 35/35 3.06 FL9B 1895
    See more | Go to post

  • 4T65E and 4T65E HD (99+) N-Body Swap

    4T65E and 4T65E HD (99+) N-Body Swap

    So you have significantly modded your engine and now your transmission seems to be the weak link of your build. You have a few options to upgrade the stock 4T45E transmission which can be rather costly, or you can swap to the stronger 4T65E series transmission which seems to be uncharted territory for many. The purpose of this article is to provide a little more insight on what it will take to swap a 4T65E transmission into your 99+ N-body.
    ...
    See more | Go to post

  • 4T4x-E Mechanical Specifications Information

    4T4x-E Mechanical Specifications Information

    4T40-E/4T45-E Automatic Transaxle Unit Repair

    NOTE: Click on images to see a full-size view.

    Fastener Tightening Specifications

    [ATTACH=CONFIG]4812[/ATTACH] [ATTACH=CONFIG]4811[/ATTACH]


    End Play Specifications
    [ATTACH=CONFIG]4813[/ATTACH]


    Reverse Clutch Backing Plate Specifications
    [ATTACH=CONFIG]4817[/ATTACH]


    On-Vehicle


    Fastener Tightening Specifications
    [ATTACH=CONFIG]4810[/ATTACH]


    General Specifications
    [ATTACH=CONFIG]4814[/ATTACH] [ATTACH=CONFIG]4815[/ATTACH]


    Range Reference
    [ATTACH=CONFIG]4816[/ATTACH]


    Shift Solenoid Valve State and Gear Ratio
    [ATTACH=CONFIG]4818[/ATTACH]


    Shift Speed
    [ATTACH=CONFIG]4819[/ATTACH]


    Flex Plate A/T
    • Flywheel to Torque Converter - 46 ft.lb.
    • Engine Flywheel Bolt - 52 ft.lb.
    Fluid Pan A/T ...
    See more | Go to post

  • 4T65E Hardened 4th hub and solenoid upgrade

    4T65E Hardened 4th hub and solenoid upgrade

    INTRO
    This is a guide on how to service your transverse automatic transmission without a lift. All work is done with the vehicle on jack stands. Once the cover is removed the valve body is left attached to the channel plate. This assembly can then be moved to a workbench for easier servicing if valve body work is in your plans. In any case the transmission drive chain, pump, 4th gear assembly and many other parts can be repaired or upgraded at this time.

    In the description below the term "channel plate" is used, sometimes the term "case cover" is applied to the same part. The term "cover" applies to the large casting on the driver's side that seals the transmission and holds the engine mount bracket. The term "pan" applies to the oil pan on the bottom of the transmission.

    Parts on Hand:
    • Upgraded solenoids
    • ATF: 10 qts
    • Filter
    • Hard parts (4th hub, shift kit, accumulator upgrade, etc.)
    • Cotter pin (ball joint castle nut)
    • Transmission assembly gel or Vaseline
    • Seals: shaft and lathe cut driver's side case seal.

    Special Tools:
    • 33mm/34mm deep socket -- depends on your spindle nut
    • Engine support beam
    • Strong T-40 Torx(R) bit
    • Cold chisel
    • Heavy hammer/mini sledge
    • Small & medium pry bars
    • Large drift pin or scrap cylinder head bolt
    • Soft mallet
    • Scrap wire to suspend brake caliper


    PREP Use your 33mm or 34mm socket to break the spindle nut free on the driver's side wheel. Loosen & reset each lug nut so you can break them free easier once the vehicle is on jack stands. Remove the induction hoses and air filter from the engine to allow access to the wiring harness and allow clearance when the engine subframe is lowered. Disconnect the wiring harness from the transmission by pinching the round connector on each side and pulling back. Disconnect the shift cable by lifting it off the ball stud. Remove the thru bolts from the upp
    See more | Go to post
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  • 4 Speed Automatic Transaxle Info
    robertisaar
    The following pages contain information on specific transmission models from the 4T60, 4T60E and 4T65 family(4T40/4T45 and 4T80 information may be in the works, stay tuned). For now, it is NOT an all-inclusive list, but any missing information would be appreciated.

    Miscellania:

    4T60E Differentials with an asterisk are "fine pitch" final drives. Sun gears, internal ring gears, and pinion gears are NOT interchangeable with other final drives.

    4T65E with "IMS" have the newer type of shifter position sensor, called the "Internal Mode Switch", as opposed to the style found on 4T60E and early 4T65E transaxles.

    4T65E Stall Speed Info:

    these are approximate stall speeds based on the K-factor and TC size. YMMV, but they should give a good estimate as to which ones will stall higher or lower.

    245-115 = 1340
    245-163 = 1900
    245-177 = 2060
    245-180 = 2100

    258-115 = 1410
    258-133 = 1630
    258-155 = 1900
    258-164 = 2010
    258-179 = 2200

    4T80 General Info:

    Maximum Engine Torque: 300 Ft-Lb
    Maximum Gearbox Torque: 461 Ft-Lb
    Maximum Gross Vehicle Weight: 4750 Lb
    265mm Torque Converter
    269 Lb Dry
    295 Lb Wet
    15 Quart Capacity

    gearing:
    2.69
    1.626
    1.0
    .681

    39/39 Chain Ratio
    Differentials: 2.84, 3.11, 3.48, 3.71

    maximum shift speeds: 6400RPM

    All have a 39 tooth input speed reluctor?
    All have a 31 tooth output speed reluctor(VSS)?

    1995 G-Body(Aurora) 4T80E
    AKN 3.48:1 FDR (has higher shift points)
    ZYN 3.71:1 FDR

    1997-up
    G:
    MDN (has higher shift points)
    MSN

    1997-up
    E & K: AAN(has higher shift points)
    K: MLN


    1985 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    CM, CP 2.8 V6 HO A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    CN, CW 2.8 V6 A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    HA, HJ, HT 2.8 V6 (Canada) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    AF, AM, AY Cadillac 4.1 V8 Cadillac C-Body & Limo 3.33 37/33 2.97 FM8C 1525
    AR Cadillac 4.1 V8 Cadillac C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    BS, BU, BN, BV Buick 3.0 V6 C-Body: Oldsmobile, Buick 3.06 35/35 3.06 FE4B 1865
    OB, OY Oldsmobile 4.3 V6 (Diesel) C-Body: Oldsmobile, Buick 3.06 35/35 3.06 FY7B 1525
    BA, BC, BR Buick 3.8 V6 A/C-Bodies: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    BX, BW Buick 3.8 V6 A/C-Bodies: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FM4B 1895

    1986 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    CNH, CFH, CMH 2.8 V6 HO A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    HJH 2.8 V6 (Canada) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FD6B 2095
    HBH 2.8 V6 (Venezuela) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick, Cadillac 3.33 37/33 2.97 FD6B 2095
    BFH, BCH, BDH Buick 3.8 V6 (High Altitude) A-Body: Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    CTH 2.8 V6 HO (High Altitude) A-Body: Chevrolet, Pontiac, Oldsmobile, Buick, Cadillac 3.33 35/35 3.33 FD6B 2095
    BPH Buick 3.8 V6 (High Altitude) A/C-Bodies: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    BAH Buick 3.8 V6 C-Body: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FM4B 1895
    BLH Buick 3.8 V6 C-Body: Chevrolet, Pontiac, Oldsmobile, Buick 3.06 35/35 3.06 FL4B 1895
    BGH Buick 3.8 V6 (High Altitude) C-Body: Chevrolet, Pontiac, Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    ACH, AMH, AFH Cadiallac 4.1 V8 Cadillac C-Body 3.33 37/33 2.97 FM8C 1525
    AJH Cadiallac 4.1 V8 (High Altitude) Cadillac C-Body 3.33 37/33 2.97 FM8C 1525
    ARH, ADH Cadiallac 4.1 V8 C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    BMH, BSH, BZH Buick 3.8 V6 E-Body: Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    BTH, BYH Buick 3.8 V6 E-Body: Oldsmobile, Buick 3.33 37/33 2974 FL4B 1895
    BQH Buick 3.8 V6 (High Altitude) E-Body: Oldsmobile, Buick 2.84 35/35 2.84 FL4B 1895
    AAH, ABH, AYH Cadillac 4.1 V8 Cadillac E/K-Bodies 3.33 37/33 2.97 FM8C 1525
    BBH Buick 3.8 V6 H-Body: Oldsmobile, Buick 3.06 37/33 2.73 FL4B 1895
    BCH, BDH Buick 3.8 V6 H-Body: Oldsmobile, Buick 2.84 375/35 2.84 FL4B 1895
    BHH Buick 3.8 V6 H-Body: Oldsmobile, Buick 3.06 35/35 3.06 FL4B 1895

    1987 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    CAH 2.8 V6 HO A-Body 3.33 35/35 3.33 FD6B 2095
    CBH 2.8 V6 A-Body 3.33 35/35 3.33 FD6B 2095
    FCH, FLH Buick 3.8 V6 A-Body 2.84 35/35 2.84 FL4B 1895
    ACH Cadillac 4.1 V8 C-Body 3.33 35/35 3.33 FL8C 1525
    ADH, ARH Cadillac 4.1 V8 C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    ALH, AFH Cadillac 4.1 V8 C-Body & C-Body Limo 3.33 37/33 2.97 FM8C 1525
    FTH Buick 3.8 V6 C-Body 3.33 37/33 2.97 FL4B 1895
    FNH Buick 3.8 V6 C/H-Bodies 2.84 37/33 2.53 FL4B 1895
    FBH, FKH Buick 3.8 V6 H-Body 3.06 37/33 2.73 FY4B 1895
    FSH Buick 3.8 V6 H-Body (Export) 2.84 35/35 2.84 FL4B 1895
    HAH Buick 3.8 V6 H-Body (Canada) 3.06 37/33 2.73 FY4B 1895
    HCH Buick 3.8 V6 H-Body (Canada) 3.33 37/33 2.97 FL4B 1895
    AHH Cadillac 4.1 V8 E/K-Bodies 3.33 37/33 2.97 FL8C 1525
    FRH Buick 3.8 V6 E-Body 3.33 37/33 2.97 FL4B 1895
    FZH Buick 3.8 V6 C-Body 2.84 35/35 2.84 FL4B 1895

    1988 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    AAH Cadillac 4.1 V8 C-Body 3.33 37/33 2.97 FM8C 1525
    ABH Cadillac 4.1 V8 E/K-Bodies 3.33 37/33 2.97 FM8C 1525
    AFH Cadillac 4.1 V8 Limo 3.33 37/33 2.97 FM8C 1525
    ANH Cadillac 4.5 V8 C-Body (Export) 3.33 37/33 2.97 FM8C 1525
    ATH Cadillac 4.5 V8 E/K-Body (Export) 3.33 37/33 2.97 FM8C 1525
    BJH Buick 3800 V6 H-Body 3.33 37/33 2.97 FL4B 1895
    BKH Buick 3800 V6 C-Body 3.06 37/33 2.73 FY4B 1895
    BRH Buick 3800 V6 E-Body 3.33 37/33 2.97 FL4B 1895
    BTH Buick 3800 V6 C-Body 3.33 37/33 2.97 FL4B 1895
    BYH Buick 3800 V6 E-Body 2.84 35/35 2.84 FL4B 1895
    CFH, CMH, CRH, CWH, CXH 2.8 V6 A-Body 3.33 35/35 3.33 FD6B 2095
    CTH 2.8 V6 W-Body 3.33 35/35 3.33 FD6B 2095
    FBH Buick 3800 V6 H-Body 3.06 37/33 2.73 FY4B 1895
    FCH Buick 3800 V6 A-Body 2.84 35/35 2.84 FL4B 1895
    FJH Buick 3800 V6 H-Body 3.33 37/33 2.97 FL4B 1895
    FSH Buick 3800 V6 C/H-Bodies 2.84 35/35 2.84 FL4B 1895

    1989 - 4T60
    Model Code Engine Platform Differential Ratio Sprocket Ratio Final Drive Ratio Converter Code Convertor Stall Speed
    AAH, ANH Cadillac 4.5 V8 C-Body 3.33 37/33 2.97 FM8C 1825
    ABH, ATH Cadillac 4.5 V8 E/K-Bodies 3.33 37/33 2.97 FM8C 1825
    AFH Cadillac 4.5 V8 Limo 3.33 37/33 2.97 FM8C 1825
    AJH Cadillac 4.5 V8 E/K-Bodies 3.33 35/35 3.33 FM8C 1825
    BAH, BDH Buick 3300 V6 A-Bdoy 3.06 37/33 2.97 FY9B 1895
    BFH Buick 3300 V6 A-Bdoy 3.06 35/35 3.06 FL9B 1895
    10-08-2010, 02:48 PM
  • 4T65E and 4T65E HD (99+) N-Body Swap
    onefastV6
    So you have significantly modded your engine and now your transmission seems to be the weak link of your build. You have a few options to upgrade the stock 4T45E transmission which can be rather costly, or you can swap to the stronger 4T65E series transmission which seems to be uncharted territory for many. The purpose of this article is to provide a little more insight on what it will take to swap a 4T65E transmission into your 99+ N-body.
    ...
    09-20-2010, 09:36 PM
  • 4T4x-E Mechanical Specifications Information
    bszopi
    4T40-E/4T45-E Automatic Transaxle Unit Repair

    NOTE: Click on images to see a full-size view.

    Fastener Tightening Specifications

    [ATTACH=CONFIG]4812[/ATTACH] [ATTACH=CONFIG]4811[/ATTACH]


    End Play Specifications
    [ATTACH=CONFIG]4813[/ATTACH]


    Reverse Clutch Backing Plate Specifications
    [ATTACH=CONFIG]4817[/ATTACH]


    On-Vehicle


    Fastener Tightening Specifications
    [ATTACH=CONFIG]4810[/ATTACH]


    General Specifications
    [ATTACH=CONFIG]4814[/ATTACH] [ATTACH=CONFIG]4815[/ATTACH]


    Range Reference
    [ATTACH=CONFIG]4816[/ATTACH]


    Shift Solenoid Valve State and Gear Ratio
    [ATTACH=CONFIG]4818[/ATTACH]


    Shift Speed
    [ATTACH=CONFIG]4819[/ATTACH]


    Flex Plate A/T
    • Flywheel to Torque Converter - 46 ft.lb.
    • Engine Flywheel Bolt - 52 ft.lb.
    Fluid Pan A/T ...
    08-18-2010, 09:25 PM
  • 4T65E Hardened 4th hub and solenoid upgrade
    Tbay99Venture
    INTRO
    This is a guide on how to service your transverse automatic transmission without a lift. All work is done with the vehicle on jack stands. Once the cover is removed the valve body is left attached to the channel plate. This assembly can then be moved to a workbench for easier servicing if valve body work is in your plans. In any case the transmission drive chain, pump, 4th gear assembly and many other parts can be repaired or upgraded at this time.

    In the description below the term "channel plate" is used, sometimes the term "case cover" is applied to the same part. The term "cover" applies to the large casting on the driver's side that seals the transmission and holds the engine mount bracket. The term "pan" applies to the oil pan on the bottom of the transmission.

    Parts on Hand:
    • Upgraded solenoids
    • ATF: 10 qts
    • Filter
    • Hard parts (4th hub, shift kit, accumulator upgrade, etc.)
    • Cotter pin (ball joint castle nut)
    • Transmission assembly gel or Vaseline
    • Seals: shaft and lathe cut driver's side case seal.

    Special Tools:
    • 33mm/34mm deep socket -- depends on your spindle nut
    • Engine support beam
    • Strong T-40 Torx(R) bit
    • Cold chisel
    • Heavy hammer/mini sledge
    • Small & medium pry bars
    • Large drift pin or scrap cylinder head bolt
    • Soft mallet
    • Scrap wire to suspend brake caliper


    PREP Use your 33mm or 34mm socket to break the spindle nut free on the driver's side wheel. Loosen & reset each lug nut so you can break them free easier once the vehicle is on jack stands. Remove the induction hoses and air filter from the engine to allow access to the wiring harness and allow clearance when the engine subframe is lowered. Disconnect the wiring harness from the transmission by pinching the round connector on each side and pulling back. Disconnect the shift cable by lifting it off the ball stud. Remove the thru bolts from the upp
    07-24-2010, 10:59 PM
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