Lower unit gear ratio

[ajv00303]

I have a pair of '05 175 Evinrudes, non-counter rotating.....looking to possibly get a used counter rotating lower.....
Are all the Magnum lower unit gear ratios the same? 1.85:1?
Do they change w/ # of cylinders or HP.
I'm coming from a Mercruiser I/O background....

 

[faztbullet]

1:86:1................

 

[ajv00303]

all the same?

 

[faztbullet]

All the stock units are 1:86... the Lighting2 are different ratio. You sure you have Mags on these motors?

 

[ajv00303]

All the stock units are 1:86... the Lighting2 are different ratio. You sure you have Mags on these motors?

I think these are Magnums?