sea6

Set ups that is

hogie roll

Just saw the specs on the new truck 6.2s, 420hp and 460ft lbs! That's like some nice big block type numbers.

bikepilot

Ilmor sells LS based stern-drive motors. Haven't seen one using the latest DI LS though.

Couginitnordic

http://marineenginedepot.com/20785/0...gine-(550-HP)/. You can buy the LSA all ready to go. I have been thinking about trying one out since it would shave about 600lbs off compared to a 496HO.

BUP

iTrader: (9)

^^^^ that is offered by marine power. Also look for marine power to come out with a direct injected LS offering bigger HP #'s. soon if they have not already currently.

Juzzi

Nice to see new offerings :-)...haven't seen used in many projects though...

You can also make your own LS-hybrid if you find a suitable donor...





Juzzi

myturn

WOW!

What year and who made the headers?
How did you handle reversion?

Juzzi

Headers are HI-TEK manifolds with lambda inserts...

I opted to use Indmar style maniolds...which have header exit on a lower and more downward aiming position than normal merc just to help with the reversion.
I also build a H-pipe to even out the exhaust pulses.

I hope that these will help the lambdas to stay alive a little longer...

Juzzi

airjunky

iTrader: (2)

To me ,the h pipe completes it ,and confirms you mean business .

corey331

I am actually doing a LS swap into my Checkmate right now. And of course as projects do, its growing. i started out intending on using a mostly stock ls1. That has now grown into an aluminum blocked 408ci LS2 with PRC ported truck heads and a custom cam. I was going to keep the motor EFI, but decided to keep it simple and carb the motor. To do the EFI correctly isn't that hard, but was just a lot more expensive. I was able to basically find a needle in a haystack and came across a set of CMI E-tops that were made for a LS motor with a bravo. I am having new tails made for them so I will be dry to the tips which allowed us to go a lot more aggressive with the cam with no worries of reversion. I also found a place that is making me a 12qt. oil pan and pick up for the motor to eliminate a lot of the oiling issues these motors tend to have. The motor is going together right now and I'm hoping to have some dyno numbers after the first of the year. We are thinking it will be between 575-600+hp and right around the same numbers for torque. I know those aren't monster numbers, but when you add in the fact that this motor weighs at least 450lbs. less than the 454 that is in the boat now, it should make for a large performance gain. This is my first experience with any of the LS motors and I have to say, the more I get into it, the more they impress me. Once I get a bunch more pics together of the build and hopefully a dyno video, I plan on starting a build thread of my progress.