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3608 preformance
Posted: November 4th, 2021, 8:33 pm
by Uke
1987 3608 can anyone help me with cruise rpm, speed, fuel usage, have nothing on boat.
has twin 5.7 fwc 454 330 hp thanks for any help uke
Re: 3608 preformance
Posted: November 5th, 2021, 9:27 am
by km1125
Was that boat repowered? 5.7's seem pretty small for that size vessel. What HP rating do they have?
Re: 3608 preformance
Posted: November 5th, 2021, 1:47 pm
by Uke
454 330 hp
Re: 3608 preformance
Posted: November 5th, 2021, 2:37 pm
by km1125
Those aren't 5.7's... they are 7.4L engines (454 CI). I had an older ('83) 3607 with 350HP 7.4L engines. Top speed was about 28MPH and it would cruise nicely around 21-22. We'd back off on the gas a lot and just lazily cruise around 15 MPH.
Cruising I'd expect around 0.8MPG unless you're really pushing the throttles. If you're just in "trawler mode" (not up on plane) you could probably expect more like 2MPG
Re: 3608 preformance
Posted: November 5th, 2021, 2:40 pm
by Uke
thanks Capt