Well, with results posted of how the LS2 compared to an LS6 and FAST 90; what are it's gains over a regular LS1 intake? I'm asking because my LS2 is ordered and I already have my cam here and am saving up for Stage II heads. Should i just try to sell it now and get an LS6; or go with it, because it will be an upgrade from an LS1?

 

I had a LS6 with Shaner and the results were hard to measure due to other mods, but I would guess 5>7 rwhp. I also have a LS2 intake and TB here ready for the winter mod program. I bet you are concerned bease of the recent post here?.. On a C5 with the LS2 TB I believe the new setup will give the engine all the air it can take, which is the goal. The more air it can take with increaasing mods, the better for the LS2. GM designed it for a 6L 400 V8 and will likely use it on the 500 hp Z07.
I have seen other reports on this intake that are very optimistic so I am not baling out till I dyno with it which will unfortunately be in the April.

 

I agree with this except for the LS7 part, I think that will be a new intake manifold very similar to the manifold that is used on the CTS-V racecar.

If you ask me the LS2 manifold is just an LS6 manifold with a 90mm opening and the corresponding changes to make that work, then some pluming changes for the LS2. Anyone know for sure?

 

Nope, the Z06 gets an all new bigger intake (LS7 Intake).
https://ls1tech.com/forums/showthrea...ght=ls7+Intake

 

I think the one shown there is the C5R which is not compatable with current heads. Same as CTS-V:

 

I don't think the ls2 is that similar to the ls6. It looks more like the fast design with it's 3 piece construction. If the ls2 doesn't work out you can always swap to a ls7 or fast 90mm in the future.

 

Wouldn't the LS2 Intake be desiged for a 6.0L 364 CI? I would like to see some tests on a bigger CI motor though and compare it to the LSX. With what I've seen so far, the LS6/ported TB is still the way to go for now. No fuel rail or bracket changes either. If your looking for the most HP, the LSX would be the choice and if your ever gonna do direct port the LSX can be drilled and fitted, my thoughts anyway.

Dan

 

We, seemed to have lost focus here. I know the LS6 looks like a better set up now. But do you all think that the LS2 is an upgrade from the LS1?

 

The LS2 and LS1 intake are the same! Here, taken straight from the mouths of GM. Heres the link to the complete article. http://www.fallrevolution.com/forums...pic.php?t=1825

I laugh at all the people swapping out their LS6 intakes for the LS2 when the LS2 and LS1's are one in the same practically.

 

Evidently, you don't know the difference. I can't go out and bolt a 90mm TB on my LS1 intake. Of course they are going to be of the same material, did you think GM was going to go back to aluminum? I just want to see how much better it will flow than an LS1, that's all. If it's more than an LS1 it is an upgrade from what I've got and will be there when I go with bigger cubes in the future.

 

after looking at mine it looks like it will flow a hell of a lot more air than the LS1.

 

Reading between the lines, it sounds like the LS2 is not worth the swap at THIS time. I would wait for some more testing before I would even bother. I'm still waiting for someone to test all three (LS6/LS2/LSX) on a 346 and 402+ engine's. We already know the LSX is working. There is already one post of someone loosing ET from the LS6-LS2 swap and right after showed a big increase (on the dyno) going from the LS2-LSX.

Dan

 

I seen the ls7 heads, a new intake will be needed for them. Not compatable with stock more like c5r.

 

Here's one guy, a friend of mine, that lost 20 HP just from switching to the LS2 ...He now has a FAST on it, and here's some numbers.
Blue is FAST and Red is LS2

 

What did he have on before, an LS6? When you say he lost 20hp from the LS2 do you mean that he gained 20hp over the LS2 from the fast intake?

The fast may be better than the LS2 for big cube motors. I suspect we will find that the LS2 is significantly better than an LS1 and slightly better than an LS6.

 

Have you ever seen an LS2 intake the volume is way more than an LS1 or 6 and the 90mm TB it will be a definate gain over an LS1 intake. And help feed high HP motors.

Nate

 

Hmmm. the same?


These seem at odds with the caption on the picture.

 

Oh well I didn't have an intake manifold period so I just got an ls2 it was cheap enough.

 

so anyone have flow numbers? LS1 vs LS2?

 

*bump* for flow numbers!