Turn up RPM on Volvo marine 454

[shenny]

I work at a GM dealership. Just had a customer ask me how to turn up the RPM on his Volvo 454. He currently turns about 4400, wants about another 1000 RPM. Can anyone help?
Thanks,
Shenny

[djunkie]

Ya, add another couple hundred horsepower to it. :D Its not like a car. If the motor doesn't have the power to spin the prop hes got than it aint happening. He could always go to a smaller prop to get the rpm but it doesn't necessarily mean he'll get any more speed.

[cfm]

150 shot of nitrous should do it. LOL.
Maybe you should ask the question with more info.
Furthermore,
Factory boat engines have a recomended max rpm range. You want to have the boat propped to run in this rpm range at WOT. If you are under this then the boatr needs a smaller pitch prop. If you are running over this than it needs a larger pitch prop.
If the engine is OEM and say has a 4400-4600rpm recomendation, and he wants to run it at 5400rpm, then he'll need parts that can not only handle this rpm safely but will need parts that make max hp at this rpm.
Boats are not like cars ! With cars, we shift after max hp rpm. With boats, we want max rpm right at max hp.

[Legal Chemistry]

run it on the trailer?
:)

[centerhill condor]

run it on the trailer?
:)
that would do it...seriously, 1k more revs are gonna blow the motor.
CC

[Moneypitt]

that would do it...seriously, 1k more revs are gonna blow the motor
CC
Yeah but it aint broke and he wants to fix it until it is.............MP

[centerhill condor]

Yeah but it aint broke and he wants to fix it until it is.............MP
I get it now..
thanks,
CC