GM Small Blocks: LS9 & LSA
These are two pretty stout small blocks. Is there a marine version of either of these engines.
The Generation IV LS9 is 376 cu.in, 9.1:1 pistons, 638 hp (ZR1 motor) The LSA is the same just detuned. 556 hp (CTS-V motor) What would be the cost if there is a marinized version? Nice stuff. |
Small blocks are great , I have the 6.2 MX [ 377 ] blocks and happy with it.
The LSA would be my choice if I built a project .http://www.gm.com/experience/technol...LS3_Marine.pdf You could also get these from Kodiak engineering for a few years now http://www.kemequipment.com/superchargedvortec6000.html |
Originally Posted by Smarty
(Post 2982003)
Is there a marine version of either of these engines.
http://www.raylarengine.com/550_engine.html |
Originally Posted by ECeptor
(Post 2982013)
Yes there is. Ray from Raylar posts here so hopefully he can add some info to this thread.
http://www.raylarengine.com/550_engine.html |
Originally Posted by Smarty
(Post 2982017)
Which LS block is that based off of, the Gen IV LS7?
I suggest you just give Raylar a call or an email. I'm sure they'd be happy to walk you through the specifics of that engine. |
go to the skater forum under new LS7 30 SKATER IN THE SPRAY BOOTH
|
Both of those engines are based on a GEN IV LS 6.2 block. The LS7 is a 7.0
|
The LS9 S/C is making more than 133 hp compared to the LS7 with 51 less cu.in. and 9.1:1 pistons. The LS7 N/A has 11.1:1 pistons (505 hp). The Eaton blower seems to make the LS9 a nice engine.
Back to my original question on cost of LS9 in a marine application, is it available, cost? The LS7 does seem like the way to go. |
The LSA makes 540 hp 540 tq.
http://www.marinepowerusa.com/Produc...MarineBase.pdf I was supposed to get a pair of these for my 29 Baja last winter. The deal fell through. I think it would have been a cool project. The swap would have lost me 1000 lbs out of the butt of my boat. |
Originally Posted by JasonSmith
(Post 2983569)
The LSA makes 540 hp 540 tq.
http://www.marinepowerusa.com/Produc...MarineBase.pdf I was supposed to get a pair of these for my 29 Baja last winter. The deal fell through. I think it would have been a cool project. The swap would have lost me 1000 lbs out of the butt of my boat. I realize I have lots of questions, but I would think if the motor is marinized, then, with the headers in the market place for this motor that the cam shaft profile would be taken in account. I am not well versed in small aftermarket exhaust on this block design though I have been following the SBC thread for older style small blocks (exhaust location differs). |
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