Merc 500 Lower Unit w 650 Power Head

[nf]

Does anybody know if a 1970 Merc 500 (50 Hp) lower unit will fit a 1970 - 1974 Merc 650 (65 HP). As an alternative will a 650 power head bolt into the 500 ??

 

[corm]

Re: Merc 500 Lower Unit w 650 Power Head

Hi,<br />Gear ratio is way wrong.<br />The 65 won't fit on a 50 lower.<br /><br />corm