Cobalt 220
Recruit
- Joined
- Mar 25, 2003
- Messages
- 1
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 sure like to see if I could get it up around 300 - 325. I figure a cam/rocker swap would be the best starting place. After that I assume better heads and exhaust mods could be considered. I currently have outdrive exhaust. I'm wondering if a thru-hull system would be substancially better. What's the initial best bang for the buck.<br /><br />Anyone know where I can get a volvo PROM recalibrated? I assume I'll need to do that if I up the power.