Outdrive gear ratios?

[WinkBuilt]

87 Sorrento 23.

Was looking at Mercury Marine website for the prop selector.

there are 3 different gear ratios listed as options for this boat.
How do I determine what mine is running?

 

[Lazy Daze]

Check Sea Ray's website - the prop matrix. But the best way is with the serial number for your drive - any Merc shop can tell you.

 

[JHornsby3]

1987 Sorrento 23 260 OMC 1.41 14.5 X 19 AL 4600
1987 Sorrento 23 260 Merc 1.5 14 X 19 4600

Copy and pasted from the Sea Ray Prop Matrix.
ENGINE,DRIVE AND PROP MATRIX.xls (searayweb.com)