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Boat Forum / Building / August 2008



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How can I increase the power of my 1990 OMC 4.3L engine?

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chaton1997@hotmail.com - 21 Aug 2008 14:10 GMT
Is it possible?

My engine is not a real "marine" engine but comes from a car.

I've a 2 BBL stock Rochester carb and a Ignitor (ignition conversion
kit).

Is there someone who could help me?

Thanks in advance and greetings from Belgium
Steve Lusardi - 21 Aug 2008 19:23 GMT
You can, but I assure you that you really do not want to do that. It is far
better to adapt a more powerful and fuel efficient engine. It is much less
expensive.
Steve

> Is it possible?
>
[quoted text clipped - 6 lines]
>
> Thanks in advance and greetings from Belgium
John C. - 24 Aug 2008 12:40 GMT
If you consider a full rebuild with some performance work such as high
compression pistons, higher torque cam, 4-bbl carb, minor milling of the
head/valve areas, etc you will have a more powerful engine without
sacrificing reliability. Also consider the strength of your outdrive and a
need to re-prop.

> You can, but I assure you that you really do not want to do that. It is
> far better to adapt a more powerful and fuel efficient engine. It is much
[quoted text clipped - 11 lines]
>>
>> Thanks in advance and greetings from Belgium
 
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