5.7 hp rating

jayz-23 · Newbie Joined: 11 Mar 2005 Posts: 29

hey there i have a 1998 bayliner 20.5ft with a mercruiser 5.7l and 2 bbl carb. what kind of hp is this motor rated for?

jayz-23 · Newbie Joined: 11 Mar 2005 Posts: 29

ive heard there are 2 versions a 250hp one and a 210 hp one. i would kind of be dissapointed if i only had a 210 hp. how would i know

EWATER · Criminal Joined: 12 Mar 2005 Posts: 75

210 horsepower is pretty damn good for an I/O.

Broccoli B · Posted: Apr 10, 2005 8:38 pm Post subject:

Our old 1997 Four Winns had the Volvo 5.7L V8 and it had 215hp.

marlinempress · Outlaw Joined: 02 Feb 2005 Posts: 112 City: Murray

wow those seem like some seriously low ratings for a 350. Even in 1985 with a 2 barrel carb the 5.7 marine from all manufacturers I know of got like 260 hp....at sea level tuned perfectly of course. I dunno where that comment came from about 210 hp being good for an i/o though ewater.....most of the fastest boats in the world are i/o's pushing 3000 horsepower.

jayz-23 · Newbie Joined: 11 Mar 2005 Posts: 29

how would i know the hp for sure? is there a serial number somewhere on the engine to compare to?

Broccoli B · Posted: Apr 11, 2005 7:24 am Post subject:

looks like i may be off, a quick google search says the old four winns had 250hp

Randy · Posted: Apr 11, 2005 8:30 am Post subject:

HP rating should be around 250 in a 2bbrl 350 carb on an I/o. My father in law has a larson with a 350 carb and its rated at 250. I have a 2000 Larson 305 carb rated at 220 hp.
Oh, and my 220 hp teamed with a 18 pitch 3 blade prop has TONS of hole shot and a top speed of 58 mph, but that depends also on outdrive ratio.