1991 4T60-E ID Chart
1AHW, 1AVW
4.9L Cadillac (export) 3.06 37/33 2.73 30 18251AMW, 1A2W
4.9L Cadillac E/K Body 3.33 37/33 2.97 30 18251APW, 1A4W
4.9 Cadillac C/K Body (export) 3.33 37/33 2.97 30 18251AYW, 1A7W
4.9 Cadillac C/K Body (touring) 3.33 35/35 3.33 30 18251AZW
4.9 Cadillac C Body (limo) 3.06 37/33 2.73 32 18251YMW
3800 V6 C/H Body 2.84 35/35 2.84 30 14201YPW
3800 V6 Reatta 3.33 35/35 3.33 30 18971YZW
3800 V6 C/H Body 3.33 35/35 3.33 30 18971CWW
3.4 DOHC W Body (non PWM TCC) 3.06 33/37 3.43 30 20951BTW
3800 V6 C Body 3.33 37/33 2.97 31 1897
1992 4T60-E ID Chart
2AVW, 2A5W
4.9L Cadillac C Body (export) 3.06 37/33 2.73 30 18252AMW, 2A2W
4.9L Cadillac E/K Body 3.33 37/33 2.97 31 18252ABW, 2A1W
4.9L Cadillac C Body 3.06 37/33 2.73 30 18252ANW, 2A3W
4.9L Cadillac C Body 3.33 37/33 2.97 30 18252APW, 2A4W
4.9L Cadillac E/K Body (export) 3.33 37/33 2.97 31 18252AWW, 2A6W
4.9L Cadillac C Body (export) 3.33 37/33 2.97 30 18252AZW, 2A8W
4.9L Cadillac C Body (limo) 3.06 37/33 2.73 32 18252AYW, 2A7W
4.9L Cadillac E/K Body 3.33 35/35 3.33 31 18252BTW, 2B1W
3800 C Body 3.33 37/33 2.97 31 18972BYW, 2B2W
3800 C/H Body SSE 3.06 35/35 3.06 31 18972CLW, 2C1W
3800 C/H Body 2.84 35/35 2.84 30 14202CSW, 2C2W
3800 C/H Body 3.06 35/35 3.06 30 18972CTW, 2C3W
3800 C/H Body SSE 3.06 35/35 3.06 31 18972CWW, 2C4W
3.4L W Body (non-PWM TCC) 3.06 33/37 3.43 30 20952CXW, 2C5W
3800 C Body 3.33 37/33 2.97 31 18972CZW, 2C6W
3800 H Body SSE/SSEi 3.33 37/33 2.97 31 18972PHW, 2P1W
3800 H Body SSE 3.33 37/33 2.97 31 18972WAW, 2W1W
3800 C/H Body & GM200 (U-body) 3.06 35/35 3.06 31 18972YLW, 2Y1W
3800 C/H Body 2.84 35/35 2.84 31 14202YMW, 2Y2W
3800 C/H Body 2.84 35/35 2.84 30 14202YZW, 2Y4W
3800 C/H Body 3.06 35/35 3.06 30 1897
1993 4T60-E ID Chart
3ABW
4.9L Cadillac C Body 3.06 37/33 2.73 30 18253AMW
4.9L Cadillac E/K Body 3.33 37/33 2.97 31 18253ANW
4.9L Cadillac C Body 3.33 37/33 2.97 30 18253APW
4.9L Cadillac E/K Body (export) 3.33 37/33 2.97 31 18253AVW
4.9L Cadillac C Body 3.06 37/33 2.73 30 18253AWW
4.9L Cadillac C Body (export) 3.33 37/33 2.97 30 18253AZW
4.9L Cadillac C Body (limo) 3.06 37/33 2.73 32 18253BTW
3800 C Body 3.33 37/33 2.97 31 18973BYW
3800 H Body 3.06 35/35 3.06 31 18973CLW
3800 C/H Body 2.84 35/35 2.84 30 14203CSW
3800 C/H Body (export) 3.33 35/35 3.33 30 18973CTW
3800 H Body SSE 3.06 35/35 3.06 31 18973CXW
3800 C Body 3.06 37/33 2.73 31 18973CZW
3800 H Body SSE/SSEi 3.33 37/33 2.97 31 18973PHW
3800 H Body SSE 3.33 37/33 2.97 31 18973WAW
3800 C/H Body & GM200 (U-body) 3.06 35/35 3.06 31 18973YMW
3800 C/H Body 2.84 35/35 2.84 30 14203YZW
3800 C/H Body (export) 3.06 35/35 3.06 30 18973CWW
3.4L W Body (non-PWM TCC) 3.06 33/37 3.43 30 20953CMW
3.1L W Body (non-PWM TCC) 3.33 35/35 3.33 30 20603YLW
3800 H Body 2.84 35/35 2.84 31 14203YRW
3800 E Body 3.06 35/35 3.06 30 18973BHW
3.1L W Body (structural side cover 4-bolt) 3.33 35/35 3.33 30 2095
1994 4T60-E ID Chart
4ATW
4.9L Cadillac K Body 3.06 37/33 2.73 31 18254CLW
2.3L Quad4 N Body (6-bolt side cover) 3.06 33/37 3.43 29 20954PHW
2.3L Quad4 N Body (6-bolt side cover) 3.33 33/37 3.73 29 23634AFW
3.1L W Body (4-bolt side cover) 3.33 35/35 3.33 30 20954AJW
3.1L A Body (export) 3.33 37/33 2.97 29 16304CMW
3.1L W Body (non-PWM TCC) 3.33 35/35 3.33 30 20604PAW
3.1L A Body 3.33 37/33 2.97 29 16304WSW
3.1L L/N Body (6-bolt side cover) 3.33 37/33 2.97 29 16304PBW
3.4L W Body (4-bolt side cover) 3.06 33/37 3.43 30 20604BLW
3800 W Body (4-bolt side cover) 3.06 35/35 3.06 31 18974KUW
3800 U Body 3.06 35/35 3.06 31 18974KHW
3800 Supercharged H Body 3.33 37/33 2.97 31 18974PFW
3800 H Body 3.06 35/35 3.06 31 18974WAW
3800 C/H Body 3.06 35/35 3.06 31 18974YCW
3800 Supercharged C/H Body 3.33 37/33 2.97 31 18974YMW
3800 H Body 2.84 35/35 2.84 30 14204YZW
3800 H Body 3.06 35/35 3.06 30 1897
1995 4T60-E ID Chart
5ATW
4.9L Cadillac K Body 3.06 37/33 2.73 31 18255PCW
2.3L Quad4 N Body (6-bolt side cover) *3.29 33/37 3.69 29 23635AFW
3.1L W Body (4-bolt side cover) 3.33 35/35 3.33 30 20955AJW
3.1L A Body (export) 3.33 37/33 2.97 29 16305PAW
3.1L A Body 3.33 37/33 2.97 29 16305WFW
3.1L L/N Body (6-bolt side cover) *3.29 37/33 2.93 29 16305PBW
3.4L W Body (4-bolt side cover) 3.06 33/37 3.43 30 20605BLW
3800 W Body (4-bolt side cover) 3.06 35/35 3.06 31 18975CAW
3800 G Body (6-bolt side cover) *3.05 35/35 3.05 31 18975BFW
3800 Supercharged G Body (6-bolt side cover) *3.29 37/33 2.93 31 18975KUW
3800 U Body 3.06 35/35 3.06 31 18975PMW
3800 U Body (export) 3.06 35/35 3.06 30 18975ACW
3800 C/H Body 3.06 35/35 3.06 30 18975ASW
3800 C/H Body 2.84 35/35 2.84 30 14205YZW
3800 H Body 3.06 35/35 3.06 30 18975BXW
3800 H Body 3.06 35/35 3.06 31 18975BKW
3800 H Body 3.06 35/35 3.06 31 18975YMW
3800 H Body 2.84 35/35 2.84 30 14205YDW
3800 Supercharged C/H Body 3.33 37/33 2.97 31 18975YNW
3800 Supercharged H Body 3.33 37/33 2.97 31 1897* 3.05 and 3.29 ratios are "fine pitch" final drives. Sun gears, internal ring gears, and pinion gears are NOT interchangeable with other final drives
1996 4T60-E ID Chart
6CUW
2.4L N Body (6-bolt side cover) *3.05 33/37 3.69 30 23636AFW
3.1L W Body (4-bolt side cover) 3.33 35/35 3.33 30 20956AJW
3.1L A Body (export) 3.33 37/33 2.97 30 16306PAW
3.1L A Body 3.33 37/33 2.97 30 16306WFW
3.1L L Body (6-bolt side cover) *3.29 37/33 2.93 30 16306BSW
3.1L N Body (6-bolt side cover) *3.29 37/33 2.93 30 16306PBW
3.4L W Body (4-bolt side cover) 3.06 33/37 3.43 30 20606PKW
3.4L U Van *3.29 35/35 3.29 30 18976CAW
3800 G Body (6-bolt side cover) *3.05 35/35 3.05 30 18976HBW
3800 W Body (4-bolt side cover) 3.06 35/35 3.06 30 18976ACW
3800 C/H Body 3.06 35/35 3.06 30 18976ASW
3800 C/H Body 2.84 35/35 2.84 30 14206BXW
3800 H Body 3.06 35/35 3.06 30 18976YLW
3800 Supercharged C/H Body (HD) *3.29 37/33 2.93 30 18976YRW
3800 Supercharged H Body (HD) *3.29 37/33 2.93 30 18976CTW
3800 Supercharged G Body (HD, 6-bolt cover) *3.29 37/33 2.93 30 1897* 3.05 and 3.29 ratios are "fine pitch" final drives. Sun gears, internal ring gears, and pinion gears are NOT interchangeable with other final drives.
1997-99 4T60-E ID Chart
7ACW
3800 C/H Body 3.06 35/35 3.06 30 18977AFW
3.1L W Body 3.33 35/35 3.33 30 20957AHW *3.29 35/35 3.29 30
7ASW
3800 C/H Body *2.86 35/35 2.86 30 14207AWW *3.29 35/35 3.29 30
7BSW
3.1L N Body *3.29 37/33 2.93 30 16307BXW 3.06 35/35 3.06 30
7CUW
2.4L *3.05 33/37 3.42 307HBW
3800 W Body *3.05 35/35 3.05 30 18977YAW *3.29 35/35 3.29 30
8AHW *3.29 35/35 3.29 30
8BSW
3.1L N Body *3.29 37/33 2.93 30 16308CUW
2.4L *3.05 33/37 3.42 308DKW *3.29 35/35 3.29 30
9AHW *3.29 35/35 3.29 30
* 2.86, 3.05 and 3.29 ratios are "fine pitch" final drives. Sun gears, internal ring gears, and pinion gears are NOT interchangeable with other final drives.