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Gear Chart

Gear Chart

Alpha One Generation 1 - Complete SEI-106 - Gear Chart

$USD 0.00

Ratio Chart for Mercruiser sterndrive, alpha one generation I and alpha one generation II

SKU: Ratio Chart Category:

Product Description

Mercruiser Sterndrive Alpha One Gear Chart Ratios

Horsepower

Engine

Year

Ratio

120 thru 140

4 cyl. One drive

1971 thru 79

1.94 / 20-24

170 thru 190

4 cyl. One drive

1971 thru 79

1.81 / 17-19

165

6 cylinder

1971 thru 79

1.62 / 24-24

188 thru 260

V-8

1971 thru 79

1.47 / 20-22

120 thru 140

4 cyl. One drive

1980 thru 84

1.94 / 20-24

170 thru 190

4 cyl. One drive

1980 thru 84

1.81 / 17-19

165

6 cylinder

1980 thru 84

1.62 / 24-24

188 thru 260

V-8

1980 thru 84

1.47 / 20-22

120 & 140

4 cylinder

1985 thru 89

1.94 / 20-24

120 & 140

4 cylinder

1985 thru 89

1.94 / 20-24

170 thru 190

4 cylinder

1985 thru 89

1.81 / 17-19

170 thru 190

4 cylinder

1985 thru 89

1.81 / 17-19

198

V-8

1985 thru 89

1.62 / 24-24

198

V-8

1985 thru 89

1.62 / 24-24

198 thru 260

V-8

1985 thru 89

1.47 / 20-22

198 thru 260

V-8

1985 thru 89

1.47 / 20-22

 

Alpha One Gen II
 

Horsepower
Engine
Year
Ratio
120 & 140 4 cylinder 1991 thru present 1.93 / 20-24
175 & 4.3 V-6 1991 thru present 1.81 / 17-19
198 V-8 1991 thru present 1.62 / 24-24
198 thru 260

 

 


1991 thru present 1.47 / 20-22

 

1986

Model/hp
Displacement
Drive Unit
Gear Ratio
120
2.50 L
Alpha One
1.94
140
3.0 L
Alpha One
1.94
170
3.7 L
Alpha One
1.81
185
4.3 L
Alpha One
1.81
190
3.7 L
Alpha One
1.81
200
5.0 L
Alpha One
1.62
205
4.3 L
Alpha One
1.81
230
5.0 L
Alpha One
1.47
260
5.7 L
Alpha One
1.47
350 Magnum
5.7 L
Alpha One
1.47
454 Magnum
7.4 L
Alpha One
1.47

1987

Model/hp
Displacement
Drive Unit
Gear Ratio
2.5L/120
2.50 L
Alpha One
1.94
3.0L/140
3.0 L
Alpha One
1.94
165
3.7 L
Alpha One
1.81
175
4.3 L
Alpha One
1.81
180
3.7 L
Alpha One
1.81
200
5.0 L
Alpha One
1.62
205
4.3 L
Alpha One
1.81
230
5.0 L
Alpha One
1.47
260
5.7 L
Alpha One
1.47
350 Magnum
5.7 L
Alpha One
1.47
454 Magnum
7.4 L
Alpha One
1.47

1988-1989

Model/hp
Displacement
Drive Unit
Gear Ratio
2.5L/120
2.50 L
Alpha One
1.94
3.0L/140
3.0 L
Alpha One
1.94
3.7L/165
3.7 L
Alpha One
1.81
4.3L/175
4.3 L
Alpha One
1.81
3.7LX/180
3.7 L
Alpha One
1.81
5.0L/200
5.0 L
Alpha One
1.62
4.3LX/205
4.3 L
Alpha One
1.81
5.0LX/230
5.0 L
Alpha One
1.47
5.7/260
5.7 L
Alpha One
1.47
350 Magnum/270
5.7 L
Alpha One
1.47
454 Magnum/365
7.4 L
Alpha One
1.47

1990

Model/hp
Displacement
Drive Unit
Gear Ratio
3.0L/115
3.0 LL
Alpha One
1.94
3.0LX/135
3.0 L
Alpha One
1.94
4.3L/155
4.3 L
Alpha One
1.81
4.3LX/175
4.3 L
Alpha One
1.81
5.0L/180
5.0 L
Alpha One
1.62
5.0LX/205
5.0 L
Alpha One
1.47
5.7LX/230
5.7 L
Alpha One
1.47
350 Magnum/240
5.7 L
Alpha One
1.47

1991

Model/hp
Displacement
Drive Unit
Gear Ratio
3.0L/115
3.0 LL
Alpha One Gen II
1.94
3.0LX/135
3.0 L
Alpha One Gen II
1.94
4.3L/155
4.3 L
Alpha One Gen II
1.81
4.3LX/175
4.3 L
Alpha One Gen II
1.81
5.0L/180
5.0 L
Alpha One Gen II
1.62
5.0LX/205
5.0 L
Alpha One Gen II
1.47
5.7LX/230
5.7 L
Alpha One Gen II
1.47
350 Magnum/240
5.7 L
Alpha One Gen II
1.47

1992

Model/hp
Displacement
Drive Unit
Gear Ratio
3.0L/115
3.0 LL
Alpha One Gen II
1.94
3.0LX/135
3.0 L
Alpha One Gen II
1.94
4.3L/155
4.3 L
Alpha One Gen II
1.81
4.3LX/175
4.3 L
Alpha One Gen II
1.81
5.0L/180
5.0 L
Alpha One Gen II
1.62
5.0LX/205
5.0 L
Alpha One Gen II
1.47
5.7LX/230
5.7 L
Alpha One Gen II
1.47
350 Magnum/240
5.7 L
Alpha One Gen II
1.47

1993

Model/hp
Displacement
Drive Unit
Gear Ratio
3.0L/115
3.0 LL
Alpha One Gen II

Additional information

Weight 0.0000 lbs