Gear Ratios

[bszopi]

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,L and W body

1st 3.50
2nd 2.05
3rd 1.38
4th 0.94
5th 0.72
Axle 3.61

Sunbird/Grand Am 2.0l turbo

1st- 3.50
2nd- 2.19
3rd- 1.38
4th- 0.94
5th- 0.72
fdr- 3.61

[rickykline]

can you put 91 quad 4 1st 2nd and 4th with a 92 3.94 fdr into say a v6 getrag or would that require alot of input and out gear changes?

[rickykline]

what would it take to swap gears from the quad 4 to the v6 getrag... like take out a first and second and fourth from a 91 quad and put them into a v6 getrag??

[pontiacjeff]

Updated info on the Getrag gear ratios:

W-body V-6 used the same gear ratios as any other V-6 cars. The myth about the 3.77/2.19 gearbox comes from the W-body Quad 4 cars. They were the only W-body cars that had the 3.77/2.19, as did other Quad 4 cars of the same years. I have comfirmed this with a '89 2.8L Grand Prix, original transmission with partial vin stamped. Upon disassembly, the following gear ratios were noted:

3.50/2.05/1.38/.94/.72/3.61

[SappySE107]

Thanks, that makes more sense Updated the top post.

[GutlessSupreme]

I can confirm pontiacjeff's V6 W-body info.

Application: '89 Cutlass Supreme International, 2.8 V6 5-speed, RPO: MG2

Input shaft
Input splines: 14
1st drive gear: 14
2nd drive gear: 20
3rd drive gear: 24
4th drive gear: 35
5th drive gear: 43

Output shaft
FDR drive gear: 18
1st driven gear: 49
2nd driven gear: 41
3rd driven gear: 33
4th driven gear: 33
5th driven gear: 31
Reverse gear: 41

Carrier
FDR driven gear: 65
VSS ring: 34 - hall effect electronic VSS
Notes: old style (pre-'91) - cast finish, smaller spiders

Reverse Idler Shaft
Reverse idler gear: 29

Other notes for all W cases: External slave/internal arm & fork, W-body specific case (W subframe mounting provisions), intermediate shaft

The following numbers are from a 1987 "Muncie Getrag" 282 service guide from GM. I think Rodney Dickman had it hosted.

1st: 3.50:1 - drive: 14, driven: 49
2nd: 2.05:1 - drive: 20, driven: 41
3rd: 1.38:1 - drive: 24, driven: 33
4th: 0.94:1 - drive: 35, driven: 33
5th: 0.72:1 - drive: 43, driven: 31
R: 3.41:1 - drive: 12
FDR: 3.61:1

W-body V6 5TM40: 3.50/2.05/1.38/0.94/0.72/3.61