OMC 4.3 Help

[SouthernWolf]

I have a 1987 19'Chapparal 195 XLC with a OMC 4.3 inboard with a cobra outdrive. What is the horsepower of a OMC 4.3?<br /><br /> Thanks<br />Don Spears

 

[DJ]

Re: OMC 4.3 Help

Don,<br /><br />I believe that vintage would be a 160 ( 2 bbl. carb.) and a 175 for a four bbl.<br /><br />I believe that was before the "Gen II" heads which bumped them up to 190 and 210.

 

[Lark40]

Re: OMC 4.3 Help

I just bought a 4.3 OMC boat myself last week.<br /><br />It is a 1987 Starcraft 22' Islander 2210V. An aluminum cuddy cabin. These boats are still made and come with 3.0, 4.3, or 5.0 engines.<br /><br />The seller told me that the "V" in the model was for the GM Vortec engine, and that this engine has 205 hp. It has a Rochester 2bbl carb and uses 93 octane gas (or 89 with retarded timing).<br /><br />I have been looking at various websites, but so far can't confirm or deny his horsepower statement. <br /><br />It is a nice running engine.

 

[wileecoyote]

Re: OMC 4.3 Help

Sorry to tell you, but in 1987 there was no such thing as a "vortec" engine. Not only is it not a Vortec(unless it's been replaced) It's not even a balance shaft motor. I don't know where the fellow you got it from got his info.

 

[moderator1]

Re: OMC 4.3 Help

Moving to I/O questions.