What HP is my engine?

Don S

Honorary Moderator Emeritus
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Aug 31, 2004
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62,321
According to the Mercruiser service manual, your engine is 300hp. Unless it's the Mag or EFI.
 

wieland77

Cadet
Joined
Mar 29, 2004
Messages
7
What HP is my engine?

I bought a 95 sunsation with a 7.4l 454 with a Bravo I drive. How do I know what horsepower this engine is? Thanks.
 

tfjrc2

Petty Officer 3rd Class
Joined
Oct 7, 2004
Messages
82
Re: What HP is my engine?

Wieland77:<br />I have a similar set-up with a 97 Bryant.<br />It is the 454 / 7.4L Bravo 1 drive and the horsepower is as Don S. says 300.<br />I still say the 10% variance allowed is excessive. 30 horses either way, is this example is a full 60 horsepower spread!
 

wieland77

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Mar 29, 2004
Messages
7
Re: What HP is my engine?

Jimbo,<br /><br /> What pitch prop are you using & what kind of speed at 4800 RPM
 

tfjrc2

Petty Officer 3rd Class
Joined
Oct 7, 2004
Messages
82
Re: What HP is my engine?

Wieland77:<br />Prop on the boat right now is a 3 blade stainless 23 pitch. WOT speed is 58-60mph.<br />I am going to go to a four blade 21 next year for better hole shot, and I really do not care about a few mph going away. We mostly tube, wakeboard and slalom. Bryant seems to have a fairly low-drag hull design & I just love the slalom wake.<br />We will see how good Santa is, or what I can scrounge / trade at the marina. I saw a pile over in the corner, and maybe something can be worked out!<br />What are you running, and what speed is the end result?
 

wieland77

Cadet
Joined
Mar 29, 2004
Messages
7
Re: What HP is my engine?

Jimbo,<br /> Thnaks for the info. That's just it, I dont know what my boat will run because I bought it to late in the year already winterized. That is why I am curious. My boat is a 25' Sunsation Aggressor, and through some other people I have talked to who also have Aggressors mine should run in the mid 60's. I have a 3-blade 23 pitch Mirage on it now.
 
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