Help Needed. 850hydro questions

[pstock800]

I am getting a 850hydro ready. my question is. what is the best motor to use. I have merc mod motor but I don't think they have the power to run with the omc. I I also have a stock omc. no tower or foot though. anyone have any towers for the omc. I have a few d foots but from what I hear they don't hold up well. thanks for any help.

[proprider]

Bass mid and bass gearbox will hold up under the OMC without any issues

[David_L6]

pstock800, I'd buy a Bass lower unit and tower. You can use any tower you like but it would be easier to buy both from Bass. Powerhead - 3 cylinder OMC.

[Dave M]

We have had good luck with the new Komato lower units as well. The Bass unit is a great choice as well.

As far as what engine, stick with the 49.9 CI Evinrude/Johnson. To be competitive, it is very cheap compared to even C Stock.

[pstock800]

I was looking through my evinrude manuals today to check the engine i have. what vintage is the 49.9. i cant find it in my books

[Dave M]

I was looking through my evinrude manuals today to check the engine i have. what vintage is the 49.9. i cant find it in my books

It is the Evinrude/Johnson 70HP. Might be 49.7CI in your manual ?

[pstock800]

Any idea what years

[hustler_racing_081]

I kno 1973 to 1987 70hp omc's will work.

[pstock800]

is .there any view difference between the 2 70hp blocks. I have no engine serial number so im not sure what year it is. hoods and pan are white. I no evinrude used white for years. the part number on the block is 334474