mercury inline 6 identification

[Captain Nino]

I have an inline 6 that bears absolutely no indication of model or horsepower. the serial is 4723475. any help would be hot. thanx

 

[alldodge]

The serial number puts you between 1970-1978
http://www.mercruiserparts.com/165-gm-250-i-l6-1970-1978

HP was listed as 140 and 160 depending on parts. This HP was also at the flywheel so you will loose 20 or so going thru the outdrive.

http://boatinfo.no/lib/mercruiser/manuals/mercruiser1.html#/898

 

[Captain Nino]

This is an outboard.

 

[alldodge]

This is an outboard.

Woops my bad :facepalm:
I crept into the wrong area again. In any case I looked your serial number at Mercury and it does not come up
https://www.mercurymarine.com/en/us/parts-and-accessories/parts-catalog

If I look up Mercury 6 cyl I found a link for the outboards but the earliest one is serial number range 4865178 - 5430526. All are listed as 115 HP

 

[flyingscott]

115

1977

EL

4567952 - 4855152

7087423