Re: Gear Ratio Question

[DAN ANDERSON]

The 4" gearcase was basically the 3 cylinder gearcase with a different D/S to work with your 2 cylinder engine. That bigger gearcase is stronger with regard to the pinion gear design. (Diameter) The smaller gearcase is faster and what has been used on 2 cylinder motors since 1975 I believe? (Definitely 1976)! Of course the larger gearcase takes the larger prop (V-4) type. Depends on what you are doing with the engine as to wheather it is better? Pontoon boat bigger prop is better. Small lite boat, small gearcase better. These are generalities. Always exceptions to any rule. All props have to be tested to find out how they run in an application.

Dan in TN