RPMs

[John Crotty]

I just picked up a 1976 , 30 foot sedan Sea Ray two weeks ago, We ran it up from West Village in Stockton to Sacramento. Let me say it did not miss a beat for 5 hours.
It has twin 350 chevys. My question is I could not get it over 3000 RPMs, Is this normal?

 

[PortHoleDiver]

I don't believe that is normal. I have a 1985 300 sedan bridge and best operating rpm is 3200 which gives me about 16 knots. Max rpm is around 4300-4500 rpm to get the manufacture spec of supposedly 26 knots, Mine never has run this fast. I did notice that on my first outting in a month that both my engines with the yokes all the way up only got 3000 rpm's, on both engines. I think maybe the cables have slipped. Can't believe that both my engines would have the same issue at the same time, ie max 3000 rpm on both.

 

[cwms]

Did it run this way during sea trial?
What does the bottom look like? Has the bottom and running gear been cleaned lately?
What props do you have on this boat?

 

[JimPend]

We had the timing advance weights rust in 454 twin crusaders and that is exactly what happened. It only takes one engine bad, it will hold the other back too. This happened on 2 different boats.