Marina Blue

I didn't miss it Howard. The problem comes with the slide Chevy had at the Birthday Bash. In making an apples to apples comparison using the same rating methods (SAE Certified), the LS2 was listed as having 395 hp. I disputed that number as not coming from a Corvette LS2, but now after LGM's dyno figure it looks like LS2 would rate 395 under the new method. I'm sure LS2 did rate 400 under the old procedure because there was more leeway to adjust testing parameters.

Time and more numbers will tell the story, but I am now convinced LS2 never developed more than 400 under any procedure.

dennis50nj

the ls3 sounds great. but i think ill wait for the ls4

and who cares about dyno numbers, before everyone has a stroke lets see some 1/4 times.

i remember when i bought mine, the next year the a6 came out i was thinking man i should have waited, never buy the first year the a6 would be so great. but the 1/4 says different with bolt ons

Marina Blue

Thanks for the kind words, Jim.

Some time ago I said your skepticism was not serving you well. I must now admit your skepticism served you very well.

Have a great trip to Kentucky and an even better trip home.

Phil

need-for-speed

Hey Buddy, one thing is for sure - we are all on the same team on this one:

Team Corvette!!

p.s. one of the best engineers I have hired is from Penn State

bunk22

I was going to say, from all the dynos and track times we've seen, that would have always been the case. Then again, if it were 395 or 405, could we really tell 5bhp? I couldn't.

'06 Quicksilver Z06

100%. Exactly!!!! And thats the whole moral of the story.

Even if that 390 number is high, even if you knock 10 even 12 horsepower off of it, thats still a 35 RWHP pounding the LS3 puts on the LS2. It will still come in at or near 380. 370 bone stock is huge, its about where my car sits at now with the modifications on it. 380 is awesome, and 390 is just insane.

Well, I've seen all I need to see. This coupled with the bogus information we received earlier, tells me as clearly as I can be told that this engine is underrated, or rated dead accurate, and the LS2 was "overrated" (of course not according to the new standard, but GM continued to rate it using the "old" standard for some two years after they had accesibility to the new standard, and was using it on the Z06.

I wonder why they did that?? Use the new standard on the LS7 but not on the LS2???? Do you think so that they could still sell the base C6 as a "400 hp" car???

Now I'm not going to say 450 for the LS3, but it is definitely making the 430 or 436.

LS2 may have developed 400 under the old standard. But it is obvious to me that it never went more than that. Under any testing method. And furthermore, it is apparent to me that it does not reach 400 under the new testing methods.

I have looked over this as hard as I can look over it, read what must be hundreds of posts here and elsewhere and articles. And have now had a chance to fine sift the facts from the BS.

I don't need to see anything else except maybe for quarter mile numbers.

And even if those come in "low" it certainly won't be because the car does not make the power.

You sir have a fine and well deserved reputation of being one of the most knowledgabe and the finest gentlemen on this board. Thank you for the kind words. You are a tremendous asset to this forum, and it would be in one heck of a fix without you, and I hope you never leave.

dennis50nj

look at the dyno graph the tq numbers look low under 4000 rpm and the hp under 2500 so is tm even locked at a higher rpm resulting in great dyno numbers and low ets. gm can monitor this and all corvette forums and most want big dyno numbers and not et

BLU-BY-U

better late than never, DSOM. glad you're seeing things differently now

need-for-speed

Well assuming TM exists , I would not expect it to show up on a dyno. If it's purpose is to prevent shock to the drivetrain, it would not be needed under dyno conditions where the car is eased up into 4th gear and then the throttle is pushed to the floor. No drivetrain shock under those conditions.

BLU-BY-U

dennis50nj

sometimes i am hard to understand. i know on the dyno you are not invoking tm. i am saying the tg numbers are high up high. and this is wear the tm will be set and slower times. and not much tq or hp down low, so now you wont need the tm down low. also a lot of good dyno numbers with L92 heads and L78 intake .big power. dont see the big 1/4 times yet.

jleews6

One thing I would like to see is an overlay of the dynos between the ls2,ls3 and the ls7. I think that the area under the curve would tell alot more than just the peak number.
I think THAT'S where the mighty ls7(big cubes) would show it's stuff. Better yet how about if someone could overlay the dyno of the ls3 with headers and K&N against the stock ls7.

With that being said=Damn I want an 08 LS3.

RRVettes

That would be interesting indeed.

jschindler

Marina Blue & DSOM Z51....

Thanks for the kind words. I can be very hard headed, and I am not always right, so your support means a lot to me. I've said things on this forum that I've regretted later.

It's kind of like racing - if you never crash, it's because you're not trying hard enough to win. Sometimes I win, sometimes I crash. But I hope to always be here trying. I really value my "friends" on this forum - both the ones I've met in person, and the ones I've never met.

'06 Quicksilver Z06

I've never been one to deny the obvious.

The LS3 is indeed the real deal.

And the reason why I don't need to see any more numbers to know that, is because I have seen enough already.

There are enough bone stock LS2 Corvette dyno numbers out there from all over the country to make it obvious.

And like I said, even if Lou's dyno is 10-12 RWHP generous, and I am not saying that it is, or is not, the LS3 numbers are still more than just impressive.

Even if you were to subtract 10-12 RWHP from the numbers we have seen for the LS3, we are still looking at a very significant horsepower increase over the LS2. And thats why I am convinced that what we are looking at is the real deal.

Cobraeater

You won't have to wait long, since the LS4 came out in 2005.

It's a 5.3 V-8 and used in the Impala SS, Monte Carlo SS, and Grand Prix GXP for 2005-2007 so far.

dennis50nj

does it have 425 rwhp if not i will wait

Cobraeater

The base engine for the C7 will likely be called the LS5 and the C7 ZO6 will have the LS8. ......

Rich S.

My 2006 A6 dyno'd at 370/370 with LG headers, a CAI and a tune on the exact same dyno. No issues here. I'm very impressed with the stock LS3 numbers however.

Life moves along. You can buy all the speed you need if you're willing to spend for it. My C6 is still more car than I can fully exploit.

glennhl

This confirms another post I read, that the LG dyno is slightly high. Most A6's with headers, inlet, tune run around 360 on Dynojets.