Ls2 vs ls3
Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
Burning Brakes
Joined: Dec 2011
Posts: 876
Likes: 116
From: HOMESTEAD FL
I beleive from the Factory bone stock the LS3 is the better choice over the LS2... But they both have EQUAL potential when heavily modded.
My friend had a 2005 LS2 with headers, exhaust and tune and I was still able to SLOWLY pull on him with my bone stock 2011 GS LS3... I beleive porting the LS2 heads is the key that brings the LS2 & LS3 nearly equal when modded.
This is a silly conversation at best. They are both great engines with awesome potential.
SPEED SAFE, AIR RAM
My friend had a 2005 LS2 with headers, exhaust and tune and I was still able to SLOWLY pull on him with my bone stock 2011 GS LS3... I beleive porting the LS2 heads is the key that brings the LS2 & LS3 nearly equal when modded.
This is a silly conversation at best. They are both great engines with awesome potential.
SPEED SAFE, AIR RAM
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
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From: Woodlands TX
SOP, my '13 A-6 feels much more responsive than my '06 Z-51 M-6. Bullets on both, did the shroud mod and an Aircharger on the '06, plus Diablo tune. The new intake is far better than the stock LS2, so don't feel the need to change it. From what I've read, Bullets on an LS3 add a few more horses than they did on the LS2. As to the Diablo tune, it made the car run too rich, so that was probably part of it. Both great engines, but the LS3 is better.
OP: If you do get the LS2 and mod, then take a look at the FAST 102 - http://forums.corvetteforum.com/c6-t...st-intake.html
Instructor
Joined: Oct 2012
Posts: 236
Likes: 2
From: lafayette louisiana
I agree both are great motors, one has a better head and intake than the other. So you will have to spend a little money to make one run better. But thats the fun of it, seeing how fast we can get our cars to go and still be great on the street or for road trips.......... Either way you cant go wrong its a corvette!!!!!!!!!!!!!!!!!!!!!1
Melting Slicks
Joined: Oct 2000
Posts: 3,368
Likes: 30
From: dfw Texas
Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
Lets agree that the stock LS3 is faster then the stock LS2 for what ever reason because the C6 PERFORMANCE FAST LIST proves it by the recorded times, Now on the same note once mods begin bolt/on or internals the LS2 is faster because the C6 PERFORMANCE FAST LIST proves it by the recorded times. So if you think your C6 with whatever motor it has is faster on the air strip, private road or in your Dreams the actual facts, clear and defined proof from the C6 PERFORMANCE FAST LIST, says the LS2 is King of the fast list and the LS3 is Queeneven if its in a C6 GS on a runway, private road, 1/4 mile track or just in your imagination
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Melting Slicks
Joined: Oct 2000
Posts: 3,368
Likes: 30
From: dfw Texas
Lets agree that the stock LS3 is faster then the stock LS2 for what ever reason because the C6 PERFORMANCE FAST LIST proves it by the recorded times, Now on the same note once mods begin bolt/on or internals the LS2 is faster because the C6 PERFORMANCE FAST LIST proves it by the recorded times. So if you think your C6 with whatever motor it has is faster on the air strip, private road or in your Dreams the actual facts, clear and defined proof from the C6 PERFORMANCE FAST LIST, says the LS2 is King of the fast list and the LS3 is Queeneven if its in a C6 GS on a runway, private road, 1/4 mile track or just in your imagination
I dont know why you keep harping on it . The Ls2/ls3 are comparable platforms IMO.. you are looking at REPORTED runs. IMO they are both good platforms.. but a ~500 rwhp ls2/ls3 will still not be even CLOSE to competitive at the air strip events.. Again.. Since that is what i enjoy.. i dont follow the list because the @132 mph cars would get crushed...If your car runs 10.163 @ 131.08 I am willing to bet $500 that i would Stomp a mud hole in it at the air strip... and you can take that to the BANK.
Burning Brakes
Joined: Dec 2011
Posts: 876
Likes: 116
From: HOMESTEAD FL
Lets agree that the stock LS3 is faster then the stock LS2 for what ever reason because the C6 PERFORMANCE FAST LIST proves it by the recorded times, Now on the same note once mods begin bolt/on or internals the LS2 is faster because the C6 PERFORMANCE FAST LIST proves it by the recorded times. So if you think your C6 with whatever motor it has is faster on the air strip, private road or in your Dreams the actual facts, clear and defined proof from the C6 PERFORMANCE FAST LIST, says the LS2 is King of the fast list and the LS3 is Queeneven if its in a C6 GS on a runway, private road, 1/4 mile track or just in your imaginationSPEED SAFE, AIR RAM
Last edited by johnodrake; Jul 22, 2013 at 01:03 PM. Reason: Remove Non Supporting Vendor Link
Burning Brakes
Joined: Mar 2013
Posts: 1,174
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From: Colorado
LOL... Based on my own personal track experience. They both have 3 spots in the HIGH 10's... the posted times give no information on elevation DA or track prep conditions... The times are so close that its a wash! I do not see any clear indicatior that the LS2 or LS3 are better than the other on that list... I say we have ourselfs a friendly little "TRACK DAY" shoot out!
SPEED SAFE, AIR RAM
SPEED SAFE, AIR RAM
Last edited by johnodrake; Jul 22, 2013 at 01:04 PM. Reason: Remove Non Supporting Vendor Link
Le Mans Master
Joined: Jan 2002
Posts: 5,889
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From: Ft. Myers FL
dennis50nj: Lets agree that the stock LS3 is faster then the stock LS2 for what ever reason because the C6 PERFORMANCE FAST LIST proves it by the recorded times
I've gotten grief many times because I had the temerity to say that a LS2 with a decent Cold Air Intake runs about the same as a stock LS3. The fast list proves that, but, for some reason folks get their nitie in a knot over that? The LS3 is a more modern updated engine, but, I know that they're not invincible! I've seen them run & been there , done that. 
Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
Im willing to bet you that nothing running low 130 mph is going to touch me at the air strip I dont know why you keep harping on it . The Ls2/ls3 are comparable platforms IMO.. you are looking at REPORTED runs. IMO they are both good platforms.. but a ~500 rwhp ls2/ls3 will still not be even CLOSE to competitive at the air strip events.. Again.. Since that is what i enjoy.. i dont follow the list because the @132 mph cars would get crushed...
If your car runs 10.163 @ 131.08 I am willing to bet $500 that i would Stomp a mud hole in it at the air strip... and you can take that to the BANK.
I dont know why you keep harping on it . The Ls2/ls3 are comparable platforms IMO.. you are looking at REPORTED runs. IMO they are both good platforms.. but a ~500 rwhp ls2/ls3 will still not be even CLOSE to competitive at the air strip events.. Again.. Since that is what i enjoy.. i dont follow the list because the @132 mph cars would get crushed...If your car runs 10.163 @ 131.08 I am willing to bet $500 that i would Stomp a mud hole in it at the air strip... and you can take that to the BANK.
if you do it's on
Melting Slicks
Joined: Oct 2000
Posts: 3,368
Likes: 30
From: dfw Texas
I'm not a 1/4 mile guy.. Honestly if i wanted to do that i wouldnt chose the C6 as my platform. That being said, im not trying to be mean but unless you gained a BUNCH of hp since your 131 mph run, you wouldnt be in the same run group as me at an air strip event
Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
There will be another Texas Invitational in April i believe. I'm Sure i could get you an invite, but im hoping you can bring a lot more than 130 mph
I'm not a 1/4 mile guy.. Honestly if i wanted to do that i wouldnt chose the C6 as my platform. That being said, im not trying to be mean but unless you gained a BUNCH of hp since your 131 mph run, you wouldnt be in the same run group as me at an air strip event
I'm not a 1/4 mile guy.. Honestly if i wanted to do that i wouldnt chose the C6 as my platform. That being said, im not trying to be mean but unless you gained a BUNCH of hp since your 131 mph run, you wouldnt be in the same run group as me at an air strip event
Melting Slicks
Joined: Oct 2000
Posts: 3,368
Likes: 30
From: dfw Texas
this year i brought 900 rwhp and i was one of the only vettes making UNDER 1k rwhp. I was also one only about 30-40% of cars making under 1k rwhp. Next April im bringing more, but still not even CLOSE to the big dog vettes bringing 1300-1400 rwhp and 1600+ rwhp TT Lambos, GTR's and 1400+ rwhp TT vipers.
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
this year i brought 900 rwhp and i was one of the only vettes making UNDER 1k rwhp. I was also one only about 30-40% of cars making under 1k rwhp. Next April im bringing more, but still not even CLOSE to the big dog vettes bringing 1300-1400 rwhp and 1600+ rwhp TT Lambos, GTR's and 1400+ rwhp TT vipers.
if that's your thing and nothing wrong with it, but comparing that and this I was under the assumption that you are saying my internally modded stock cubic inch NA pass in the 1/4 couldn't beat your LS3 stock cubic inch internally modded LS3 in a roll race
Melting Slicks
Joined: Oct 2000
Posts: 3,368
Likes: 30
From: dfw Texas
its .2 liters of displacement difference and once you do good heads the power pretty much is equal. it boils down to being a drivers race.
Instructor
Joined: Oct 2012
Posts: 236
Likes: 2
From: lafayette louisiana
Yes heads are a factor on the ls2, for those of us who love to drag race. So we do one of two things port the **** out of them or remove them. And while were at i we trash the factory intake also....... Makes some serious power doing that i might say. Wondering how streetable is your 900hp vette .Sounds like you guys are very serious about your miles per hour. But that is what this sport is about . Having fun either the way you do it or the way we do it . Its fun!!!!!!!!!!!!!!!!!!!!!!! By the way what is your top mph...........