pre sv2 gulfstream repower

[strictly business]

getting ready to repower from twin yamaha 150 2s with aux tanks to twin 175 suzuki's. has anybody repowered with something like this? can't pin down an actual weight of the yamahas, I'm guessing around 425-475? the suzuki's are 531. my worries are weight for the suppers to be effective and the power to plane like i used to. yamaha cruised at 3800-4k@27-29mph. top speed would be 40-42. thanks

 

[Denko]

http://www.nadaguides.com/Boats/1992/Yamaha/Outboard-Motors

You can enter the correct year here to see the factory weight, in 1992 a 150 weighed 390#.