LS2 vs. LS6 Dyno Graph

[Dreamin]

Has this been posted before? Is it for real? How can the LS2 have such a 'fat' torque curve compared w/LS6?? This would imply the C6 is going to crush the C5 Z06.

[NinjaZ06]

Also, keep in the mind the weight difference between a standard C6 and a Z06. I am not sure how much it is, but I still beleive the Z is lighter.

[NETfiend]

From what I understood, the LS2 isn't going to have the triple valve technology. That is some soul crushing torque from the LS2 compared to the LS6 though.

[PerforminNorman]

Wow, that's exciting. More displacement, more valves, more torque? How does the bore and stroke compare? Usually more stroke = more torque.

[benenati379]

The LS2 head is a 16 valve / 2 valve per cyl configuration.

Thanks for the post. That is exactly what I was waiting for! I have posted before that I was more excited about the torque curve the LS2 would make, then the peak hp/tq numbers. That new torque curve is sure going to make the new C6 easier to drive fast and feel more powerful when its just cruising around. It probably wont have to work it as hard as the LS6 to go as fast.

Wow, it really looks like it make a LOT more torque under the curve.

[sil350]

yes this was posted earlier by me. that torque down low is gonna be awesome

[benenati379]

Originally Posted by PerforminNorman

Wow, that's exciting. More displacement, more valves, more torque? How does the bore and stroke compare? Usually more stroke = more torque.

I believe that the LS2's displacement increase is all bore. Just a bump to an even 4.0 inch bore and same stroke.

[PerforminNorman]

Originally Posted by benenati379

I believe that the LS2's displacement increase is all bore. Just a bump to an even 4.0 inch bore and same stroke.

Thanks for the info.

[Wingnut]

Thanks for the info. It makes me appreciate the torque curve with my Magnacharger even more.

[vortech]

50 extra cubes-no substitute for displacement.

[benenati379]

Originally Posted by vortech

50 extra cubes-no substitute for displacement.

It is more like half that. Like around 20 cubic inches. The LS2 is 364.9ci / 5970cc.
Bore is 4.0 and stroke is 3.62

But I agree, there is no substitue for displacement.

[sil350]

for some great pics as well as more technical pics of the c6 look here Great pics from C5/C6 B-Day Bash

[Phaster]

I thought the LS6 made 400 lb-ft of torque not 390? The HP numbers look accurate.

[truckrookie]

hp is calculated from torque.........how can the torque curves be so different yet the hp curves are similar? Answer is.......it can't, something's fishy. Now before anybody starts assaulting me, be sure and bring some math, because I've used superflow engine dyno's for the last 9 years. I've already proved that two aftermarket manufacturers were claiming faulty numbers simply because the two didn't add up in their published advertisements. People in buisiness expecting to take your money will actually show you a dyno graph where the hp number doesn't equal torque in ft./lbs x RPM / 5252. I guess buyer beware.

[No Doubt]

I just did the math and their graph is correct.

Example:

390 ft.-lbs. @ 4000 RPM

297 h.p. @ 4000 RPM

As closely as I can tell by looking at that graph.

Since H.P. = Torque X RPM/5252

Then:

390 ft.-lbs. X 4000 RPM = 1560000

Then:

1560000/5252 = 297 h.p. @ 4000 RPM