It's roughly 364-366 cubic inches. 
Is the LS2 really a NEW motor??
TECH Enthusiast
Joined: Jul 2003
Posts: 507
Likes: 2
From: Ankeny, IA
Its a mildly tweaked LSx motor. A few more cubes. Relocated knock sensors. Different intake. LS6 heads. Relocated cam sensor. New PCV system. Maybe a few more I forgot. But honestly I'm not sure why they slapped Gen IV on there. More marketing than anything else IMO.
LS2 is still a Gen III small block. If they want to call the LS2 a Gen IV block with the minor changes that it has, why not go all the way back to 1981 and call the L83 the "Gen II" small block. Then when the L98 came out call it the Gen III small block, LTXs Gen IV, LS1 Gen V...well you get my point.
I also think it is just marketing to call it a Gen IV. When the multivalve heads come out I'll consider it a Gen IV.
most parts are directly interchangable between the LS1 and LS2, as stated in the first reply
most parts are directly interchangable between the LS1 and LS2, as stated in the first reply
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Addict
Joined: Feb 2004
Posts: 2,826
Likes: 0
I think what everyone will find is that it is an unremarkable upgrade from the LS1/6. It's performance could easily be matched and even exceeded using similar upgrade parts on an LS1/6 motor. Weak GM....very weak.
TECH Enthusiast
Joined: Jul 2003
Posts: 507
Likes: 2
From: Ankeny, IA
From my understanding its completely different. In one of the many C6 articles I have read the engineers went into detail about how it was reworked. Personally I just installed a catch can and quit worrying about it.
To me it's a Gen III & a half. The electical changes are significant enough that they need to be noted, but the LS2 as a whole is an evolutionary half step at the most. It's better for us actually.
I think the main thing they are changing is the ability to shut down cylinders for economy, making it the next generation. The small ci increase is a normal life cycle change.
Kurt
Kurt
Originally Posted by 427
I think the main thing they are changing is the ability to shut down cylinders for economy, making it the next generation. The small ci increase is a normal life cycle change.
Kurt
Kurt
Last edited by cyphur_traq; Oct 1, 2004 at 06:09 PM.
TECH Addict
Joined: Feb 2004
Posts: 2,826
Likes: 0
Originally Posted by cyphur_traq
You won't be able to do that on the LS2. Their new truck motors will be able to tho. You're referring to what GM nicknamed DOD, Displacement On Demand.
