If you look at the graph the intake side of the stock LS there is very little improvement. The stock LS intake ports are so efficient and contribute SWIRL to the intake charge. You can make 2000 HP on a LS with turbos and the LSX block easily.

Wannabe

I still dont understand why there are not tons of Turn Key LS motor packages. I see Ilmore and indmar versions but there are no listed prices and they are usually setup for ski boats. Even merc has Re-Created a SBC.. Forget the SBC.. We want LS tech.

Chris

Simple..if the market wanted it, it would be there. Prices are reasonable on indmar and gm stuff, warrantys are there, now go to a boat show and tell me how man entry level offshore boats you see vs wakeboard and bowrider boats........

Build it an they will......... crickets...

Spoke to the guys at Indmar a couple times and they offer a hell of a package for not a lot of money. You can get the supercharged 575 LS in the high teens with exhaust and warranty. When i talked to them they really are pushing the Raptor Ford motor though, in the grand scheme of things your not likely to do any wrenching on it so it really would not matter what the base is. My thought is if i was looking for a good strong replacement style engine for a sport boat that will spend it life in "as designed" form this is a great option. These are not for the guy that has to tinker with everything and find hidden HP (like most of us lol) Fantastic pair of engines if you were building a 30 ish foot boat.

All of Ilmor's LS engines up to 570 hp are available with a number of different stern drives:
http://www.ilmor.com/en/marine/recreational/

Volvo Penta has been producing LS-based power up to 430 hp for 4-5 years now:
http://www.volvopenta.com/volvopenta...gineRange.aspx

all Chris' batboat have the 570's in them now. That is one bad ass engine. Pushing 90mph with a Bravo3 and not the biggest props we have. Pulls like a freight train and has been a pretty turn key engine.

30 grand for a motor....
I don't have 30 grand in the restore of my race boat and it has 2 motors. Just saying.

same here man ...

[QUOTE][/Pushing 90mph with a Bravo3 QUOTE]

damn that's impressive out of a B3 nice

This guy wrote one darn very good story about the Merc / stuff 5 months ago. Story starts on page 17 and 18 from the link below. Great read.

http://www.emconsultinginc.com/Digit...h/Winter_2015/

That looks like the same type of heads Mercury built for the Z98(?) C4 Corvette.
I understand the Chevy engineers were not happy GM went to Mercury
to build that engine. I believe that is why GM kept the push rods for the C5/6 LS
and C7 LT engines.