So will Chevy bump the HP rating for the LS2 in its second year?
I have an '01 Z06 and was a little pissed when the '02 came out.
It seems like with the displacement increase, there's a lot more power available than 400 without much work.

 

Actually, if displacement was the only change, that extra .3 liters would be good for an additional 18hp.....AT MOST. The 6 liter is only 5% larger than the 5.7 liter. It's hardly any bigger.

To get 400hp, they had to do a lot more than just increase displacement.

 

I guess I was referring to the ability to get 405 from the LS6. I know it's a hotter motor, but as far a foundation to build on, it seems like the bigger motor could make more than 400 HP.

 

I wouldn't expect a power increase until the 3rd model year at the earliest.
it was the 5th MY for the C5 and the bump was slight (5HP, 15ft-lbs/w 6 spd).
I recall a Chevy show car a couple of years ago with a 430HP 6.0L V-8.
If the LS2 could have the same HP/Tq per liter as the LS6 then, it would be
about 425HP/420ft-lbs. If #V technology could be added with much
rework then 10-15% more power could be achieved.

 

I believe the horsepower will jump to 425 in the second year or when they bring on line the six speed automatic transmission..

 

The larger bore block is just begging for a stroker kit! I am sure that several companies are already working on stroker crankshafts to give the engine a considerable increase in displacement. The factory could just as easily use a larger stroke crankshaft to accomplish the same goal at no cost difference if it chooses to do so in the future.

The new block has great potential and I will be stroking my new Vette as soon as a kit becomes available.

 

That's what i'm thinking. That possibility, combined with the unveiling of the new Z06 and what it will offer, will have me holding off on purchasing an '05.

 

Earlier this year, I went to the Atlanta Auto show to see the C6. Sitting about 20 yards away was the Chevy SS "dream car" with a 6lt 430 X 430 engine in it. Clearly stated on the show poster. Further, it had a 4AT with a 3.42 rear end.

Facinating

 

I realize the General is capable of doing some pretty goofy stuff, but I really doubt if we will see much of any increases on the coupe/vert in less than three or four years. I think they will let the Z06 handle the high horsepower stuff.

As far as waiting for the new automatic, it is unlikely it will be used for a few years. GM is working with Ford on developing new transmissions, but it is more likely they will be used first in volume cars where they can get better bang for the buck on CAFE numbers, and swaying more new customers. They are working on six speed automatics for both front and rear drive applications. In the scheme of things, the cost justification for the Corvette is probably not a high prioritiy, and it demands a transmission that can handle more torque.

Anyone who waits for more horsepower is (in my opinion, of course) a fool. Why waste valuable years always worrying about what might be? Sure, the 01 Z06 was a stupid move, but let's be honest - how much difference did it really make in performance? Not really that much. Not enough to agonize over.

 

the 5 speed autos used in BMWs are made by the general.

 

Clem - I actually AM surprised by this, but I respect your knowledge so I believe it to be true. But this only makes the fact that they are so far behind in offering them in most of their cars even more amazing. (Yes, I realize they have finally begun offering them in some Cadillacs the past two years).

 

The AT being developed by GM and Ford is for front wheel drive only. In an article I read recently in the SAE publication, GM was quoted as saying the rear wheel drive 6 speeds by both Ford and GM were to far into development to make working together of any use.

 

Not true. Actually, they have an agreement to jointly develop them for both front and rear drive applications. I don't remember which was which, but one took the lead on front drive, the other on rear drive. Bet me a dinner and I'll go dig through my magazines to come up with the source.

BTW, I can only "prove" this by providing a source for the information. It has been reported in a couple of car magazines.

 

The first production year they tend to be "conservative" with power. It is my opinion that the second or third year C6 will have higher HP #s. Not to mention more MODS will be available by then.

GM will also have time to work out the bugs after the 1st model year.

 

i remember reading this some where on the forum: a member was taking a tour thru the assembly plant and said he saw the ls2 on a dyno putting over 400 hp out.

 

It is possible that the LS2 is underrated so as not to hurt 2004 Z06 sales. It's a pretty well known fact that the LT4 was underrated at 330HP so as not to upstage the LS1.

 

For the record GM & Ford are working on a front wheel drive 6 speed. The rear wheel drive auto is GM only.