OMC parts *800 Cobra outdrive drawing *Video

T.C. Electronics/Marine (416) 751-7326 Home Page

OMC Gear Ratio Chart Electric Shift 1973-1977

Stern drive gear ratios years 1973 to 1977

  • Upper / lower gear case
  • OMC electric shift outdrives 1972 to 1977 have 15 / 23 lower gear ratios
  • Exploded View OMC Drawings Search by part number or description here
  • Complete rebuilt gear case available

electric shift 1971 to 1977

electric shift 1971 to 1977

Stern Drive Year

HP

Upper gear case

1973 to 1977

100, 120 hp

16 / 20 Upper

1973 to 1977

140 hp

19 / 20 Upper

1973

165 hp

21/19 Upper

1973

225, 245 hp

21/16 Upper

1974

165, 170, 190 hp

21/19 Upper

1974

225, 245 hp

21/16 Upper

1975

165, 175, 190 hp

21/19 Upper

1975

225, 235, 245 hp

21/16 Upper

1976, 1977

165, 175, 190 hp

21/19 Upper

1976, 1977

225,235 hp

21/16 Upper