Lower unit interchangability thunderbolt outboards

opalized1

Seaman
Joined
Apr 5, 2017
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I have a 1967 950ss, and a 1970 1150 thunderbolt engine, serial #'s respectively, 2212337, 2929797
I found a jet pump unit on a 650 unknown year, looks to be a smaller housing, short and stubby, does anyone know of a compatibility chart for these older motors.
Or maybe someone knows of someone selling a jet pump for this era motor, id hope that the 95 and 1150 would interchange at the very least.
any thoughts or ideas, I want to run my boat on Sacramento river this season for salmon fishing, and would feel far safer with a jet pump over standard lower unit, and if anyone has done this on these older motors what kind of performance loss is there, currently with the 950ss, im getting max speed of 30 mph, and as of now, not quite getting full throttle out of my linkage.
 

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