General Motors gear ratios

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Contents

GM Rear Wheel Drive Transmissions

PTU = Power Transfer Unit (Crossover SUV AWD/4WD)

6 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd 4th 5th 6th
MNK Allison 1000 3.100 1.810 1.410 1.000 0.710 0.620
MNZ Allison 1000 3.100 1.810 1.410 1.000 0.710 0.620
MW7 Allison 1000 3.100 1.810 1.410 1.000 0.710 0.620
MYB 6L50 4.027 2.364 1.532 1.152 0.852 0.667
MYC 6L80 4.027 2.364 1.532 1.152 0.852 0.667

5 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd 4th 5th
M74 Allison 1000 3.100 1.810 1.410 1.000 0.710
M22 5L50-E 3.450 2.210 1.590 1.000 0.760
M82 5L40-E 3.460 2.210 1.590 1.000 0.760
MTW Allison 2400 3.510 1.900 1.440 1.000 0.740
MX4 Allison 2000 3.510 1.900 1.440 1.000 0.740
MX5 5L40-E with PTU* 3.460 2.210 1.590 1.000 0.760
MV3 5L50-E with PTU* 3.450 2.210 1.590 1.000 0.760

4 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd 4th
M30 4L60-E 3.059 1.625 1.000 0.696
M32 4L60-E HD 3.059 1.625 1.000 0.696
M32 4L65-E 3.059 1.625 1.000 0.696
M33 4L60-E Hybrid 3.059 1.625 1.000 0.696
M41 4L30-E 2.860 1.620 1.000 0.723
M70 4L70-E Super Duty 3.059 1.625 1.000 0.696
M99 2ML70 2-mode Hybrid* 3.692 1.705 1.000 0.738
MD8 4L60 3.059 1.625 1.000 0.696
ML4 4L30-E 2.400 1.479 1.000 0.723
MN8 4L80-E HD 2.482 1.482 1.000 0.750
MN8 4L85-E 2.482 1.482 1.000 0.750
MT1 4L80-E 2.482 1.482 1.000 0.750
MW9 HM 200-4R 2.740 1.570 1.000 0.670
  • EVT Mode 1 The 2ML70 can operate in electric mode or non-electric mode in first gear with a gear ratio of infinity to 1.70:1.
  • EVT Mode 2 The 2ML70 operates in non-electric mode with a gear ratio of 1.70 - 0.738:1

3 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd
M40 3L80 2.480 1.480 1.000
M41 3L80HD 2.482 1.482 1.000
M65 3L30 2.400 1.480 1.000
MD2 3L30 2.400 1.480 1.000
MD3 HM-180 2.400 1.480 1.000
HM-200C 2.740 1.570 1.000
HM-350 2.520 1.520 1.000
HM-400 2.480 1.480 1.000

GM Front Wheel Drive Transaxles

6 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd 4th 5th 6th
MH2 6T70 (FWD) 4.484 2.872 1.842 1.414 1.000 0.742
MH4 6T70 (FWD) 4.484 2.872 1.842 1.414 1.000 0.742
MH6 6T75 (AWD) 4.484 2.872 1.842 1.414 1.000 0.742
MH7 6T40 X23FHD 4.584 2.964 1.912 1.446 1.000 0.746
MH8 6T45 X23F 4.584 2.964 1.912 1.446 1.000 0.746
MY9 6T75 (AWD) 4.484 2.872 1.842 1.414 1.000 0.742

5 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd 4th 5th
Aisin-AW 55-51LE 4.685 2.942 1.923 1.301 1.000
M09 Aisin-AW AF33-5 4.685 2.942 1.923 1.301 1.000
M43 Aisin-AW AF23-5 4.685 2.942 1.923 1.301 1.000
M45 Aisin-AW AF33-5 4.685 2.942 1.923 1.301 1.000
M98 AF33-5 4.575 2.979 1.947 1.318 1.000
MJ7 Honda 5AT 2.185 1.270 1.023 0.729 0.530
MJ8 Honda 5AT w/PTU* 2.185 1.270 1.023 0.729 0.530
MLS Aisin 50-40E 4.575 2.979 1.947 1.318 1.000
MU3 Saab 76.5mm 3.385 1.760 1.179 0.894 0.700

4 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd 4th
MLQ Aisin 81-40LE 2.875 1.568 1.000 0.697
Aisin ZF 4HP 16 2.719 1.487 1.000 0.717
HM 325-4L 2.740 1.570 1.000 0.670
Jatco JF405-E 2.914 1.525 1.000 0.725
M10 Jatco JF403-E 3.027 1.619 1.000 0.694
M13 4T60-E HD 2.921 1.568 1.000 0.705
M13 4T60-E 2.921 1.568 1.000 0.705
M15 4T65E 2.921 1.568 1.000 0.705
M45 Aisin-AW AF33 4.685 2.942 1.923 1.301
M57 A245-E 3.639 2.006 1.295 0.892
M76 4T65E with PTU* 2.921 1.568 1.000 0.705
MD7 4T65E 2.921 1.568 1.000 0.705
ME7 4T45-E BAS Hybrid 2.960 1.626 1.000 0.681
ME8 4T60 2.921 1.568 1.000 0.705
ME9 440-T4/F7 2.921 1.568 1.000 0.705
MH1 4T80-E 2.960 1.626 1.000 0.681
MN3 4T65E 2.921 1.568 1.000 0.705
MN4 4T40/45-E 2.960 1.626 1.000 0.681
MN5 4T45-E 2.960 1.626 1.000 0.681
MN7 4T65E HD 2.921 1.568 1.000 0.705
MS7 A240-E 3.639 2.006 1.295 0.892
MU4 A246-E 4.005 2.208 1.425 0.981
MU5 U341-F 2.847 1.552 1.000 0.700

3 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd
M60 GEO Metro 2.810 1.550 1.000
MB3 A131L 2.811 1.549 1.000
MD9 3T40 2.840 1.600 1.000
MX1 A131L 2.810 1.550 1.000
GEO Storm 2.841 1.541 1.000
HM-425 2.482 1.482 1.000

GM Manual Transmissions

6 Speed Manual Transmissions

RPO Trans Name 1st 2nd 3rd 4th 5th 6th
M10 Tremec 85mm 3.010 2.070 1.430 1.000 0.840 0.570
M12 Tremec T56 2.970 2.070 1.430 1.000 0.840 0.570
ML6 ZF S6-650 5.790 3.310 2.100 1.310 1.000 0.720
ML9 ZF S6-40 2.640 1.800 1.290 1.000 0.750 0.490
MM6 Tremec T56 2.660 1.780 1.300 1.000 0.740 0.500
MV1 Aisin 85mm 4.170 0.790
MV5 Aisin D173 AY6
MV6 Aisin 85mm 4.170 0.790
MZ6 Tremec 85mm 2.970 2.070 1.430 1.000 0.710 0.570

5 Speed Manual Transmissions

RPO Trans Name 1st 2nd 3rd 4th 5th
M35 Getrag 260 3.830 2.190 1.400 1.000 0.810
M35 Getrag 260 (2003-2004 Cadillac CTS) 3.570 2.040 1.340 1.000 0.820
M49 BW 5spd 3.750 2.190 1.410 1.000 0.720
M50 NV3500 3.490 2.160 1.400 1.000 0.780
M59 GEO Tracker 3.652 1.947 1.374 1.000 0.864
M86 Getrag F23 75mm 3.580 2.020 1.350 0.980 0.690
M94 Getrag F23 3.580 2.020 1.350 0.980 0.690
M96 Tremec 109mm 5.810 2.940 1.610 1.000 0.770
MA5 Aisin AR5 82mm 3.753 2.260 1.370 1.000 0.729
MG3 Getrag F23 3.580 2.020 1.350 0.980 0.810
MG5 NV3500 4.016 2.318 1.401 1.000 0.729
M50 NV3500 3.490 2.160 1.400 1.000 0.780
M51 NV3550 3.490 2.160 1.400 1.000 0.780
MH3 Tremec T-5 3.500 2140.000 1.390 1.000 0.730
MK5 C59 3.166 1.904 1.310 0.969 0.815
ML2 Tremec T-5 4.030 2.370 1.490 1.000 0.720
ML3 Tremec T-5 3.760 2.180 1.420 1.000 0.720
MT8 NV4500 6.340 3.440 1.710 1.000 0.730
MU3 Saab F25 3.380 1.760 1.180 0.890 0.700
MW2 NV1500 3.940 2.370 1.490 1.000 0.830
MW3 NV4500 109mm 5.610 3.040 1.670 1.000 0.750
TR-3450 3.820 2.310 1.420 1.000 0.830
TR-4050 5.810 2.940 1.610 1.000 0.770
TR-4050 6.160 3.110 1.710 1.000 0.760
2007 Chevrolet Optra and Spark (Trans code Y4A) 3.416 1.950 1.280 0.971 0.757
2007 Chevrolet Optra and Spark (Trans code Y4M) 3.416 1.950 1.280 0.971 0.757

4 Speed Manual Transmissions

RPO Trans Name 1st 2nd 3rd 4th
M20 HM-117 6.555 3.580 1.700 1.000
M73 Isuzu 4.010 2.250 1.420 1.000
MC0 Getrag 4.020 2.300 1.400 1.000
MC9 BW 4.030 2.370 1.490 1.000
MY6 NP260 3.090 1.670 1.000 0.730

More GM Manual Transmissions

6 Speed Manual Transaxles

RPO Trans Name 1st 2nd 3rd 4th 5th 6th
MT2 Opel F40 83mm 3.770 2.040 1.370 1.050 0.850 0.620
MU9 Opel F40 83mm 3.770 2.040 1.370 1.050 0.850 0.620
MTN Toyota C60 3.166 2.050 1.481 1.166 0.916 0.725

5 Speed Manual Transaxles

RPO Trans Name 1st 2nd 3rd 4th 5th
D-16 (2005-2008 Chevrolet Aveo 1.4 DOHC / 1.5L) 3.545 1.952 1.276 0.971 0.763
D-16 (2005-2008 Chevrolet Aveo 1.4 SOHC) 3.545 1.952 1.276 0.892 0.707
Y4A (2007 Pontiac Matiz) 3.416 1.950 1.280 0.971 0.757
YM4 (2005-2007 Chevrolet Aveo) 3.417 1.950 1.280 0.971 0.758
D-20 (2005-2007 Chevrolet Epica) 3.545 2.158 1.478 1.129 0.886
L73 Pontiac LeMans F16 3.410 1.950 1.270 0.890 0.710
M42 Geo Metro
M43 AF23 4.685 2.942 1.923 1.301 1.000
M49 BW 5spd 3.750 0.760
M58 Geo Metro 3.420 1.890 1.280 0.910 0.760
M79 LeMans F13 3.550 2.390 1.300 0.890 0.730
M86 Getrag F23 (5T45MI) 3.580 2.020 1.350 0.980 0.690
M94 Getrag F23 3.580 2.020 1.350 0.980 0.690
M98 Aisin 55-51E
MB4 Geo Prizm 1.8L 3.545 1.904 1.233 0.885 0.725
MB5 Geo Prizm 3.545 1.904 1.233 0.885 0.725
MFB 2008 Chevrolet Epica 5-Speed S/R (D24)
MFN 2008 Chevrolet Epica 5-Speed S/R (D33)
MG1 HM-282 3.500 2.190 1.380 0.940 0.720
MG2 HM-282 3.500 2.050 1.380 0.940 0.720
MG3 Getrag F23 3.580 2.020 1.350 0.980 0.810
MJ1 Isuzu 3.730 2.180 1.330 0.920 0.740
MK7 Isuzu 3.910 2.180 1.450 1.030 0.740
MLM Y4M (2008 Chevrolet Aveo 1.6 DOHC) 3.417 1.950 1.280 0.971 0.758
MR3 Isuzu 3.730 2.180 1.330 0.920 0.740
MU3 Saab F25 3.480 1.760 1.180 0.890 0.700
MV2 Chevrolet Sprint 3.420 1.890 1.280 0.910 0.760
MY7 Early J-car 3.910 2.150 1.330 0.920 0.740

GM Continuously Variable Transaxles

RPO Trans Name Lowest Highest
M83 V20-E 2.618 0.443
M75 V25-E 2.618 0.443
M16 V25-E AWD 2.618 0.443