LS3 blocks...
TECH Senior Member
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Joined: Apr 2006
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From: Western Burbs of Detroit
Can't wait to see an LS3 block with everything done to it. h/c/exhaust and all boltons with a nasty tune. 530 + rwhp should be expected. How about a forged internal ls3 setup for a procharger or a turbo, maybe twin turbos ?? The possibilities are endless.
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Thread Starter
TECH Enthusiast
Joined: Dec 2002
Posts: 736
Likes: 0
From: Chattanooga,TN
Originally Posted by Gordon0652
I have read some where that the LS3 is an aluminium L92 even theo the L92 is iron... Same mold.
http://www.texas-speed.com/shop/item...id=686&catid=3
Originally Posted by drain89
The LS3 and the L92 use the same block. Aluminum 4.065" Bore.
"Through extensive R&D, GM powertrain has completely gone through the block and strengthened the bulkheads by 20% and will use them in the new truck line too.....the Vette and the trucks will feature identical part nunbers for their latest foundation".
Thread Starter
TECH Enthusiast
Joined: Dec 2002
Posts: 736
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From: Chattanooga,TN
Originally Posted by RWC
That's good news for the high horsepower guys using this block and may make the current L92 block less desirable.
Originally Posted by RWC
According to the Sept Chevy High Performance magazine about the L92 block in the new LS3;
That's good news for the high horsepower guys using this block and may make the current L92 block less desirable.
"Through extensive R&D, GM powertrain has completely gone through the block and strengthened the bulkheads by 20% and will use them in the new truck line too.....the Vette and the trucks will feature identical part nunbers for their latest foundation".
The LS2 is going to be ancient history by the time the 5th gen Camaro gets built .. it is in the concept car because that was the engine that was available at the time the concept car was put together .. 
Originally Posted by 1ORANGEWS6
does anyone sell them yet?
They are and have been available for quite a while now...page 223 of the 2007 GM Performance Parts catalog..the part number is 12584727.
Originally Posted by 1ORANGEWS6
does anyone sell them yet?
does anyone sell them yet?
Originally Posted by slt200mph
They are and have been available for quite a while now...page 223 of the 2007 GM Performance Parts catalog..the part number is 12584727.
Originally Posted by RWC
Isn't 12584727 the original L92? I think 1ORANGEWS6 means the new LS3 block which is "improved" from the old L92 block. It looks like the stronger LS3 block will be in all 08 6.2L's.
As mentioned above the Vettes and trucks will have the same block ..
