Mercruiser 3.0 to 3.7 swap ????

htg900

Cadet
Joined
Jun 24, 2009
Messages
6
I have a four winns with a mercruiser 3.0 140 motor with cracked block. Found a mercruiser 3.7 liter will it bolt in what would i have to change?
 

fishinpa

Petty Officer 1st Class
Joined
Nov 2, 2009
Messages
221
Re: Mercruiser 3.0 to 3.7 swap ????

Sounds like your heading Backwards !

Most logical is to find another 3.0



there are many more around and all parts are available for them..

fish
 

robjen1019

Petty Officer 1st Class
Joined
Apr 18, 2007
Messages
257
Re: Mercruiser 3.0 to 3.7 swap ????

walk away from the 3.7. Motors are not even close to the same. Go find another 3.0 block. 3.7's have some definite known problems. The 3.0 is a solid engine.
 

htg900

Cadet
Joined
Jun 24, 2009
Messages
6
Re: Mercruiser 3.0 to 3.7 swap ????

thanks guys had no idea. Anyone know where i can find 3.0 block was this block used in any cars?
 
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