OMC King Cobra Gear Ratio Chart

Cobra sterndrive *800 OMC parts *Mercruiser outdrive videos

OMC King Cobra Gear Ratio Chart

2.3 to 7.5 Liter upper gearcases

King Cobra
OMC Cobra
GMC 2.5 Liter plus drive shaft gear ratio
Ford 2.3 Liter plus drive shaft gear ratio
Mechanics will find this chart to be an additional tool when working or ordering stern drive parts
Exploded View OMC Drawings

GMC 5.7 Liter before 1988 chart

Cobra Model King Cobra unit *

Upper
Gearcase

Lower
Gearcase

GMC 2.5 Liter

GMC 3 Liter before 1989

21:18

13:26

GMC 3 Liter since 1989

21:21

14:26

GMC 4.3 Liter

21:19

14:26

GMC 5 Liter

21:17

14:26

GMC 5.7 Liter / before 1988

21:16

14:26

GMC 5.7 Liter after 1988

21:16

14:26

GMC 554 or 502 after 1988

21:17

17:20

Ford 2.3 liter

21:21

13:26

Ford 351 after 1992

21:17

14:26

Ford 5 liter or HQ 5 liter

21:18

14:26

Ford 5.8 Liter

21:16

14:26

Ford 7.5 liter before 1988

21:17

17:30

Ford 7.5 liter after 1988

24:29

17:20

21-16 OMC outdrive with trade-in