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ls2 v ls3?

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Old Jul 14, 2007 | 04:27 PM
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Default ls2 v ls3?
what is the difference besides the heads and the 30 hp?
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Old Jul 15, 2007 | 12:36 AM
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Originally Posted by saltine
what is the difference besides the heads and the 30 hp?
Approx 12 more cubic inches or so (give or take 1 or 2) with the LS3, along with a different manifold intake and different cam on the LS3 motor!
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Old Jul 15, 2007 | 07:39 AM
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so what is it just the ls2 bored out?
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Old Jul 15, 2007 | 08:02 AM
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It is a different block as well. Similar or the same as the L92 truck engine.
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Old Jul 15, 2007 | 08:26 AM
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doesnt the ls3 dyno like 420-430rwhp and the ls2 in the mid 300s?
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Old Jul 15, 2007 | 10:24 AM
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Originally Posted by NVR KNO
doesnt the ls3 dyno like 420-430rwhp and the ls2 in the mid 300s?
it dynos high 300's to 400 but with minor bolt ons it has been in the upper 400's
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Old Jul 15, 2007 | 04:48 PM
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so the ls3 essentially acts better with bolt on than the ls2 and yea the ls2 does pretty low on the dynoing at the wheels... well for the gtos anyways... idk but the 6.2 would basically the same block that comes in the 07 denali or the 07 escalade... and has any one heard what engine they are gonna go with for the camaro... ls2 or ls3... i heard the concept had the ls2 but if they are coming out with the ls3 wouldnt they just us that? or my guess go with the detuned version of the ls2 like the pontiac G8 is gonna have for the z28 version than the ls3 for the SS version.... that would make sense right?
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Old Jul 16, 2007 | 08:30 PM
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Can you run a head like Trickflow 225 or an basass set of LS6s with a 90/90 on an LS3 block?
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Old Jul 16, 2007 | 08:57 PM
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Originally Posted by JaSSon
Can you run a head like Trickflow 225 or an basass set of LS6s with a 90/90 on an LS3 block?
why not save $ and run some L92 heads or even ported LS3 heads
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Old Jul 16, 2007 | 09:11 PM
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Originally Posted by speeddemongto
why not save $ and run some L92 heads or even ported LS3 heads

Correct me if I'm wrong, but aren't LS3 heads L92s?
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Old Jul 16, 2007 | 09:55 PM
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from what i know, same castings, but the ls3 have different (lighter, hollow) valves for better valvetrain control
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Old Jul 16, 2007 | 10:24 PM
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Originally Posted by Greg Fell
from what i know, same castings, but the ls3 have different (lighter, hollow) valves for better valvetrain control

That's interesting. Wouldn't happen to have a p/n, would you?
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