Trying to figure out what model Merc engine and outdrive I have?

srandall64

Cadet
Joined
Jun 5, 2013
Messages
7
Hello everyone,

Trying to determine what model Merc engine I have and what model Outdrive and ratio... I recently purchased a 1970 21' Slickcraft Cuddy (SS215) with the original Mercruiser 250 inline 6, 165hp engine, and outdrive. Can anybody tell me what model this engine and outdrive would be? and what ratio the outdrive would be.

Thanks for any help you can give me..

Steve Randall
 

mitchell2345

Petty Officer 3rd Class
Joined
Jun 25, 2011
Messages
78
Re: Trying to figure out what model Merc engine and outdrive I have?

Hello everyone,

Trying to determine what model Merc engine I have and what model Outdrive and ratio... I recently purchased a 1970 21' Slickcraft Cuddy (SS215) with the original Mercruiser 250 inline 6, 165hp engine, and outdrive. Can anybody tell me what model this engine and outdrive would be? and what ratio the outdrive would be.

Thanks for any help you can give me..

Steve Randall

your going to have to provide engine serials and pictures of the motor and lower unit if you want a correct answer
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,283
Re: Trying to figure out what model Merc engine and outdrive I have?

GM based 165hp motor post some pics., drive might be a MC1 or an earlier model type. Gear ratio should be 1.65-1
 

srandall64

Cadet
Joined
Jun 5, 2013
Messages
7
Re: Trying to figure out what model Merc engine and outdrive I have?

your going to have to provide engine serials and pictures of the motor and lower unit if you want a correct answer

Thanks Mitchell2345, I will see if I have pictures and numbers here at the house and put them up. If not I will put them up tomorrow after I go to the boat..

Thanks...
 

srandall64

Cadet
Joined
Jun 5, 2013
Messages
7
Re: Trying to figure out what model Merc engine and outdrive I have?

GM based 165hp motor post some pics., drive might be a MC1 or an earlier model type. Gear ratio should be 1.65-1

Yes Bt Doctur, it is a 250 ci. GM inline 6.. I will get pictures and serial numbers tomorrow and post them after I go to the boat..
Thanks
Steve
 
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