310 DA drive gear, prop pitch

[Coz]

Anyone know what the stock B3 gear ratio and prop pitch is on 2008 and older 310s?

What would be the norm for cruising rpm’s vs wot rpm’s?

I have a 2.0 on one side and 2.2 on the other both 22P props. About $3500 to have one regeared.

 

[hughespat57]

https://owners-resources.searayweb..../2008 Sport Boat Sport Cruiser Prop Chart.pdf

Chart shows OEM was 2.2 and 22"

Merc catalog shows 5000-5400 for WOT
but if you get the serial numbers and reachout to Mercury tech support they should be able to verify

 

[Coz]

Thanks. Clears that part up. The engine sticker says 4800-5200 rpm.
My cruising rpm is about 3700 and wot is 4600. Curious what others are seeing.