Recent content by Naf

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    Upgrading Power on 5.7 300hp

    Re: Upgrading Power on 5.7 300hp This is how i installed a wb o2 sensor on my exhaust. You will need an adapter to merge the two threads, but that was the easy part... Thanx for the info on the trim adjustment, i will try that as well. I may be too high on my lowest trim... My fuel tank is...
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    Upgrading Power on 5.7 300hp

    I have a 2009 Volvo Penta / Mercruiser SBC with Multi port Fuel injection. It has Vortec heads and Marine L31 Intake manifold. Stock it suppose to make 300hp, but when i try and pull a skier it bogs in the low rpm. I dont know what the cam is, but i do have hydraulic roller lifters. I am...
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