1971 650 4 cyl powerhead swap with a 500

delta07d

Seaman Apprentice
Joined
Mar 28, 2012
Messages
32
Can I swap a 1974 merc 500 4cyl powerhead with a 1971 650? Just asking.
 

emckelvy

Commander
Joined
Jan 16, 2004
Messages
2,506
Re: 1971 650 4 cyl powerhead swap with a 500

Nope. Powerhead base patterns are completely different from each other, the driveshafts are different diameters, many other differences.

HTH...........ed
 
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