speed of 260's and 280's Sundancer

[CV-23]

My 454 in my 270 is a real gas hog.....bottom line is 1.2mpg at cruise which is 3800 rpms at 30mph. She tops out at 4600 rpms at 38mph. 4 blade stainless mercury. Performs great but the 454 carb is a thirsty engine. Mine is a 9ft beam and 30ft long, Mike.

 

[John Matura]

I’m repowering my 06 280 dancer with twin 350 mags mpi alpha drives any idea how much faster I’ll go?

 

[Espos4]

I would imagine Not much faster Unless you re-propped and looked into the gear ratio of the outdrive.

A 350 MAG is pushing an Alpha to its limits.

 

[scoflaw]

The 4.3's with alpha's are pushing in the 49 mph range. Not sure what that hull is capable of. Let us know.

 

[John Matura]

I would imagine Not much faster Unless you re-propped and looked into the gear ratio of the outdrive.

A 350 MAG is pushing an Alpha to its limits.

Definitely re prop I think a 15-17 ss merc vengeance is one of my options

 

[John Matura]

I’m not buying off eBay

 

[scoflaw]

Definitely re prop I think a 15-17 ss merc vengeance is one of my options

With what ratio ?

 

[John Matura]

With what ratio ?

That I have to look into according to serial number of engines merc said I should only have to re pitch Prop