Re: Mercruiser 454 distributer
Just out of curiosity what sort of revs should i get out of her?
At the moment 4-4.5k is tops, seems a little low in my book.
That depends on what you actually have. A 7.4MCM engine should have 4200 to 4600 rpm at wide open throttle.
You have to understand, this is not a car engine, top revs means nothing on boats. They have a max WOT (wide open throttle) rpm range that they need to run in to prevent overloading the engine, or over revving the engine.
This is determined by the manufacturer and is shown in the manual.
This RPM is adjusted by using different sized props in both pitch and diameter.
Have a look in the Prop forum here at iboats, I think you will get an idea of what is happening there.