Is GGB Gibson? Or another company that has a g in their name? Do they make a self contained muffler, or just inserts?

I never really thought about those. I don't really care for how they look, but they might work. I'll have to look into them, thanks!!

GGB is not Gibson. I have their inserts in dry stainless marine pipes and they make a big difference, very happy with them.

Teague seemed rather rude.

Padraig

When you do the turbo(s?) you could cam back enough to lose the reversion. The engine will still make mucho ponies due to the forced induction.
Have you looked into turn downs? With the overlap you are running they'd have to be short to avoid reversion wile coming off plane when your boat's nose is high and the following water is high.

Yeah, F@%K Teague. I was planning on spending a couple thousand dollars on that phone call between some mufflers, an oval flame arrestor and some other odds and ends. But by the end of the conversation with whoever the asshat was answering parts questions that day, I'll never give them a cent. He also said I should be running a marine cam, when I explained to him that I got my cam custom ground from a reputable marine specialist, he didn't know what to say. Then when I explained to him that the reversion seems to be inherent to LS motors, the dumb ass didn't even know what an LS motor was.

There will be a lot of things changing when the turbo's go on, the cam being one of them. I am also converting it over to EFI, so that in itself will allow me to widen up the lobe separation which will help the reversion. Actually, with the turbos, the cam won't have to be much bigger than a stock LS cam since I only want to make in the 800hp range being that I am still connecting it to a Bravo 1 drive. So I don't think reversion will be an issue at all with that set up. I will also be doing a piston swap to get the compression ratio down from 10.5:1 to around 9:1.

you shoulda got his name. then called Teague back. sounds like he should be working in McDonalds...

Yup, Teague has been huge for our industry...I'm sure he and others there would love to know this. + it will help out future customers if he is removed or atleast removed from the phone.

Other than the reversion problem would you still do the LS swap?