ZR6 adding Supercharger

If you were in SoCal, there are plenty of people who could make that work for what would probably be a large chunk of money. Hot Rod boats and motors are fairly common out there.   Unfortunately you're very far away from them. The simplest thing may be to find a mercury powered inboard and use one of their bolt on kits so all the tuning has already been done.

I hope so too. It looks like its 50/50 right now.

Why are you messing with it ? Is the boat not preforming well?

Well the zr6 is the same motor as the 6.0 turck motor for the most part. It can handle why more power than I will throw at it with a 5-8 lbs SC. The intercooler can be over come with a water to air IC no big deal there. ANd your right on the injecotrs again no big there either. the Stand a lone ECU is an option I am looking into now. Yea the Stock PCM ECU is a lost cause from what i have been told too.

Probably the easiest way to get around the ecu issue is to just run an aftermarket ecu, ie megasquirt. Most car guys do this anyways just for the sake of tunability. From what I've heard trying to reprogram the stock PCM box is a lost cause, but being an ex-programmer I can tell you there is no such thing as a locked ecu, however this doesn't mean it isn't a holy royal pita to do. I very fondly recall the days GM used to solder in their chips just to be bastards and when Mazda changed their hex coding so you couldn't match values. That, however, isn't your only problem. For starters you're going to need bigger injectors, I'd also be willing to bet the stock fuel pump will be at the very edge of its volume/pressure limits for the increased airflow. Next on your list is going to be the internals. While I'm not positive on the Chevys in question, most compensate for the increase in pressures by either forging the internals and/or changing the compression ratios. The final hurdle is going to be how you plan on cooling the SC and the charged air. You can run it without an air cooler, but you'll lose around 30% of the hp to thermal temps, while increasing your chance of detonation 10 fold, meaning you'd need to retard timing losing even more hp.   

What I'm tryin to point out here is while its always possible, its a lot more than simply slapping it on the intake and fabbing it to fit. I'm not sure its really worth it when all is said and done. Even if you got the SC for free I'd wager you spend another $3K easy to do it properly and reliably. That being said I always applaud and support unique modifications, especially when they involved an increase in gas consumption.

go to vortec forms for this and they will hook you up instantly. it all depends on the motor combination. such as what type of ls heads they used and what ls motor it is. there is so much to know about chevy motors its not even funny. but there are many choices for superchargers out there. and many of the name brand one come with tuners to tune the engine. plus tuning the computer is not a big deal. just take it to a shop or get a tuner.

You're biggest issue will be that you can't reprogram the computer. This issue has been discused and attempted, but that's where it ended last time on PN.

The XS 550 has the cool factor, but it's more than a $20000 upgrade and I haven't seen any numbers that suggest it will have a positive effect on fuel usage like the BBC Python's. I guess we'll find out as more boats get out and people get a better idea about what should be expected.

Rumor out there is the 550 will be available in the 200's for 2013.

Speed, what feedback has PCM given you on this??

There is a super charged engine option available now from CC. I know they offer it on the G23 and G25, not sure about the ski boats. I believe it is 550 HP. I don't think the prop is going to be your problem.