Vette4ever

So where does the LS6 get the 5 extra ponies over the LS2?

Anyone have any tech. data? The LS2 is 400hp right?

WhiteDiamond

The graph of the LS2 versus the LS6 shown in the other thread shows the LS6 pulling a few more RPM before the HP curve drops. That is probably the 5hp. Apparently the LS2 cam part number is in the new GM books, but they is not a cross-reference for it and no specs. It will be nice to see the specs once released(it is supposed to be the 2001 Z06 cam from recent GM comments).

Todd

LittleBoyBlu99

clem zahrobsky

the LS-2 is a LS-6 with a bigger bore which unshrouds the valves for better top end breathing. my guess is that the LS-2 make more than 400 HP. they were making over 400 HP on the dyno at the corvette engine plant last july when i was at the plant and watched the dyno run and i will bet they found more HP since


[Modified by clem zahrobsky, 1:12 PM 6/29/2004]

Joe’s Z06

Sweet!

Adam Bruce

Even if the LS2 still is 5hp down ont he LS6 I still would preffer the Ls2 based on this dyno alone. The motor burries the LS6 in all useful rev-zones!

ivan111

Is there any specific area were LS6 engines tend to fail more?

Connecting rods, blocks, crankshaft, bearings, pistons etc..?

I am asking this because i just heard today at the track that a Red Z06 could not run because it blew the engine, they say that the problem was related with the pistons but no specifics......

427CPE

Uhmmm. Maybe the larger c.i. engine puts out less power? Fat chance.
Its underated. I expect to see 500rwhp engines all over the place with
the ready to purchase stroker "c6" available off the floor. Those pesky cobras and rice cars were bad enough.

The Example

Holy crap! The LS2 has as much torque at 2000rpm as my LT1 does at its peak! That must be helluva lot of fun to just drive around without even dipping into the throttle...

What American or European or Japanese cars currently in production or slated for production within the next two years can touch 400/400? I'm sure its slightly underrated to keep people buying C5s.

KaPPaBaLL

none in the corvette's price range ever will.

yellow01

Since you didn't say what kind of car or what price
Viper
M5
S55
Porshe Turbo
...

RobWS6

'05 GTO is slated to have the LS2 with the same ratings. But it won't touch the 'Vette because of the GTO being so heavy.

The Example

Yeah I wonder about that '05 GTO. If it puts down that much horsepower, what kind of 1/4 times can we expect? Something on par with M3s would be nice...

LSs1Power

If the M6 GTO now are running 13.4 at 105mph then another 50rwhp would put them in the high 12's low 13's at 109-110mph for the M6 and mid 13's at 106-107mph for the A4. Just my .02 cent.

Michael A

I might be a little behind the times, but I just heard yesterday that the '07 M3 will have a V8. Horsepower should be in the same range as the base Vette.

Michael

raj

Very clever graph, indeed!

If you look at the torque axis (left), the scale is not from 0, but from 250 ft-lbs! This is done to magnify the torque differences between the two curves. By leaving the HP axis (right) at full scale (starting at 0) and zooming in on the torque axis they've managed to visually exaggerate the difference in torque between the two engines. Yes, the LS2 is torquier (it'd better be with 6.0L and CR = 10.9:1!), but the difference is less impressive than it appears on this graph.

Also, the LS6 torque curve is shown to peak at 390 ft-lbs instead of 400 ft-lbs! A little play with the scale and a little fudging and VOILA! The LS6 is made to cower like David before Goliath! In reality, the hp curves are virtually identical across the powerband!

Both MT's and C&D's tests of the C6 show it to be comparable in acceleration to a '01 Z06 and a step or two behind the '02+ Z06s. Right in line with projections based on power-to-weight!

xsiveone

I think that GM is sandbagging with the LS2. I don't think that GM wants to outclass the LS6 at this point.

I won't be surprised if people are able to pick up 20-30 rwhp by simply doing a tune. That's my feeling anyway.

X

BradJ

A tune?

Like twisting the distributor cap a little, I remember those days.

Vette_DD

[QUOTE=raj]Very clever graph, indeed!
If you look at the torque axis (left), the scale is not from 0, but from 250 ft-lbs! This is done to magnify the torque differences between the two curves. QUOTE]

The magnification of the torque difference is not made by starting the scale at 250. It's made by the difference between lines of the graph, or 20 lb-ft. per graph line. To make the difference seem even greater, you could make the lines of the graph only 5 lb.-ft. apart and the difference would look huge.

xsiveone

What I meant was going in and doing an LS1edit and changing the tuning on the engine.

X