Thanks Bor I really appreciate your guidance. How about starter and alternator ? any special attention there ? Did you use the LS starter and alternator or did you find and use marine replacements ?

Did you contact KEM about exhausts yet ? Just wondering if price has changed.

Here is some alternators that may help: http://www.dbelectrical.com/c-7765-pleasurecraft.aspx
and sarters (if the OE is not sealed/marine) : http://www.dbelectrical.com/c-8038-p...ft-marine.aspx

Thanks SB , I emailed KEM twice and go nothing from them ... I found these's guys after sorting through hundreds of pictures of LS manifolds on google http://www.haxbyspeed.com/ they offer a set of manifold for 799$ , they look alright and price is decent. EDIT : I just checked the email and the response was from a Marinepowerusa address ... I guess they re-distribute the marinepower products

About the alternator and starter is their an actual difference beside some gaskets or contact covered by rubber booths ?

Btw sorry about my spelling and sentences I am french ...

Haxby is a current member here.
Look for any Holley EFI thread and you'll see him. LOl.

I will do a search ! :)

I have a deal pending now on a 5.3 motor , just under 100 000 miles on it. I would probably get the whole boat rigged and running then redneck diy supercharge it with a m122 blower and Air to water aftercooler.

Thats where the forum is for ! And as Im living in europe I buy a lot in the usa and here on the forum as we have not a big offshore market here and I have been always threaded right and helped out by other members that make me happy to can do something back here and there .

I used the pcm alternator bracket but had to customise that as we build the ls 7 dry sump system on the engine and that moved the serpetine belt route a bit .because the crank has a longer snout .

we just used the ls starter and alternator works great but my boat is always stored in heated building on the trailer never left in the water

hope this helps

bor

Thanks Bor you are very helpful !

I am doing my research now about the simplest way to convert to a return style fuel system. I am very excited to start working on my project.

If you are talking about how to return to the tank, here's your answer :
http://www.cpperformance.com/c-500-f...s-returns.aspx

http://www.cpperformance.com/images/.../620-76300.jpg

Thanks ! cool product ... never even crossed my mind to do something this simple.

A french redneck? Who knew? Did you happen to read this LS article. Pretty impressive little motors.
http://www.hotrod.com/how-to/engine/...g-bang-theory/