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    More Power from 5.7 EFI Volvo?

    Just wondering if anyone has had any experience with power upgrades on the EFI 350cuin Volvo. I know the motor is essentially the same as the Merc. The drive is the Volvo Duo-Prop, which I belive is a pretty stout unit. It's installed in my '94 Cobalt 220.<br /><br />Base HP is around 260. I'd...
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