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  1. R

    Adding a second Alt batt combo to 3.0L

    How would I go about installing a second small sized Alt and batt combo to power my two stereo amps? My boat has a 2006 GM 3.0L Volvo Penta. I have a single pully balancer and single water pump pully. What I'm looking at is a small 2010-2011 Merc 115 outboard ALt... smaller size would be...
  2. R

    GM 3.0L High Output vs Base 3.0L

    I'm confused as to what makes up a High Output vs a Base 3.0L. It's my understanding that both are the same HP? If this is the case, is it fuel economy at the same HP or just name sake ..etc?? Anyway, On the High output I find electronic ignition and small port heads and on the older base...
  3. R

    Volvo to OMC Cobra outdrive

    Here goes.. Bought a 1990 Four Winns with a cracked block (cheap). Anyway, Got a sweet deal on a 2006 volvo penta 3.0L long block to replace my 1989 OMC 3.0L. Here comes the problems. First, my OMC intake has the large ports and the new engine has small. As I want the exhaust tube to...
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