J-Body Transmission ratios complete list - Transmission Forum

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J-Body Transmission ratios complete list
Monday, April 11, 2011 8:40 PM
2.8L Engine
87-89 - Getrag/Muncie OR Isuzu 5 speed
85-86 - Muncie 4 speed

90-91 - HM-282 (Getrag/Muncie) 5 speed
HM-282 (Muncie/Getrag) (RPO: MG2) and NVT 550 (New Venture) 5 speed
1st - 3.50 (driven gear 49 teeth, drive gear 14) 33mph @ 6000 rpm
2nd - 2.05 (driven gear 41 teeth, drive gear 20) 56 mph @ 6000 rpm
3rd - 1.38 (driven gear 33 teeth, drive gear 24) 84 mph @ 6000 rpm
4th - 0.94 (driven gear 35, teeth drive gear 33) 115 mph @ 5650 rpm
5th - 0.72 (driven gear 31 drive gear 43) 119 mph @ 4450 rpm
Final Drive Ratio - 3.61:1

3.1L Engine
92-94 - NVG T550 5 speed

2.0L Engine
82-89 - Isuzu 5 speed, or Muncie 4 speed
First 3.91
Second 2.15
Third 1.45
Fourth 1.03
Fifth 0.74
Final Drive Ratio 3.45

Isuzu 4 Speed Manual (RPO: M73)
1st - 4.01
2nd - 2.25
3rd - 1.40
4th - 1.00


2.2L Engine
90-95 - Isuzu 5 speed
Isuzu 5 Speed Manual (RPO: MK7)
1st - 3.91
2nd - 2.18
3rd - 1.45
4th - 1.03
5th - 0.74
FDR 3.58

96+ 2.2 I think is the same until 2000 or 2001??????? not sure 100%

2.4L Engine
96-99 - Isuzu 5 speed
1st 3.73
2nd 2.18
3rd 1.33
4th 0.92 3
5th 0.74
FDR 3.94

00+ - Getrag/Muncie 5 speed
Getrag F23 (M86/M94) Years: 2000+
1st - 3.58
2nd - 2.02
3rd - 1.35
4th - 0.98
5th - 0.69
Reverse - 3.31
Final Drive Ratio - 3.94

AUTOS
TH125C (3T40) - 3 Speed Automatic (RPO: MD9)
1st - 2.84
2nd - 1.6
3rd - 1.0
Reverse - 2.067
Final Drive Ratio - 3.18

4T40-E 4 Speed Automatic years 95+
1st - 2.96
2nd - 1.63
3rd - 1.00
4th - .68
Final Drive Ratio - 3.91


Non J-Bodies transmissions that may interchange

Geo Storm- Isuzu Impulse- Isuzu 5 speed
90-93 SOHC base storms had:
1st 3.72
2nd 2.04
3rd 1.44
4th 1.02
5th 0.82
FDR 3.57 or 3.83

the 90-93 DOHC GSI storms had:
1st 3.90
2nd 2.15
3rd 1.44
4th 1.02
5th 0.82
FDR 4.11

Grand Am Quad 4 - 2.3 5 speeds
Getrag Gear ratios:

W41
1st - 3.50:1
2nd - 2.05:1
3rd - 1.38:1
4th - 1.03:1
5th - 0.81:1
FDR - 3.94:1

Pre-92
1st 3.50:1
2nd 2.19:1
3rd 1.38:1
4th 1.03:1
5th 0.72:1
FDR - 3.61:1

92-94
1st - 3.50:1
2nd - 2.19:1
3rd - 1.38:1
4th - 1.03:1
5th - 0.72:1
FDR - 3.94:1


Quad 4 Getrag 89
1st...3.50
2nd...2.19
3rd...1.38
4th...1.03
5th...0.72
FDR...3.61

1990
1st 3.50
2nd 2.19
3rd 1.38
4th 1.03
5th 0.81
Axle 3.61

1991
1st 3.77
2nd 2.19
3rd 1.38
4th 1.03
5th 0.81
Axle 3.61

1992-1994
1st 3.50
2nd 2.05
3rd 1.38
4th 1.03
5th 0.72
Axle 3.94

1991-1993 W41
1st 3.50
2nd 2.05
3rd 1.38
4th 1.03
5th 0.81
Axle 3.94


Isuzu L-Body
1st 3.73
2nd 2.15
3rd 1.33
4th 0.92
5th 0.74
Axle 3.83

V6 Getrag All years J and L body
1st 3.50
2nd 2.05
3rd 1.38
4th 0.94
5th 0.72
Axle 3.61


W Body V6 HM282
1st...3.77
2nd...2.19
3rd...1.38
4th...1.03
5th....0.81
FDR...3.61


The F23 is also used in the Cobalt, G5, HHR, G6, Grand Am/Alero......

Getrag F23 Cavalier/Sunfire 2.4/2.2
1st - 3.58
2nd - 2.02
3rd - 1.35
4th - 0.98
5th - 0.69
Rev - 3.31
FDR - 3.94

Getrag F23 Cobalt/Ion (Base)
1st - 3.58
2nd - 2.02
3rd - 1.35
4th - 0.98
5th - 0.69
Rev - 3.31
FDR - 3.84

Getrag F23-MG3 Saturn VUE (4 cyl)
1st - 3.58
2nd - 2.02
3rd - 1.35
4th - 0.98
5th - 0.81
Rev - 3.31
FDR - 4.41

Getrag F23 Chevy HHR
1st - 3.58
2nd - 2.02
3rd - 1.35
4th - 0.98
5th - 0.69
Rev - 3.31
FDR - 4.17



Another Auto
TH440 (4T60) 4 Speed Automatic * (RPO: ME8)
1st - 2.921
2nd - 1.568
3rd - 1.0
4th - .705
Reverse - 2.385
Final Drive Ratio - 3.33
*Note: The TH440 tranny was NEVER used in the J-bodies. It can be found in the Lumina and other GM cars. This tranny could possibly be swapped into the J-bodies.

I believe this to be a mostly complete list of what was available in JBodies, Please feel free to add anything if you can.

Re: J-Body Transmission ratios complete list
Tuesday, April 12, 2011 2:47 PM
"*Note: The TH440 tranny was NEVER used in the J-bodies. It can be found in the Lumina and other GM cars. This tranny could possibly be swapped into the J-bodies."

I have a 4t60e so.. correct.


- Your not-so-local, untrained, uncertified, backyard mechanic. But my @!#$ runs
Re: J-Body Transmission ratios complete list
Wednesday, April 13, 2011 9:59 PM
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