I know someone that has seen it. They said the bolt pattern was different. We'll soon see if my source is good.

 

I agree. GM loves hitting their parts bin, even on totally redesigned models. This works out well for us however - interchangable parts. Besides, it mkaes good business sense for them to make engines that share stuff. The cost to R&D and produce all engines w/ all new components would drive costs through the roof. All the auto makers do it until technological evolution forces the need for totally new components to stay competitive ( i.e. LS1) Just my .02.

 

Time will tell.

 

Like the way the LS6 manifold was gonna drop in price when the LSx came out....I don't see it. The cost is set by Chevy who seems to be very proud of their products.

 

The cam position sensor is in the front of the LS2 so the cams wont be interchangeable.

 

http://www.highperformancepontiac.co...0404pon_tribe/

They are talking about using an LS2 with LS6 heads for the GTO and CTS-V in the future in this article. If the LS6 heads fit the LS2, wouldn't it figure the LS2 heads would fit an LS1?
Dan

 

I have looked very closely at the pics for the engine. If you notice on that behemoth they only use ONE pushrod for both rockers on one side, and some multi-pushrod (multipart...only one pushrod up to the head) monstrosity on the other rocker. I like GM, but that is crap. Worthless horsepower robbing extra parts. Give it up GM. Build us our overhead cam V-8 we have been waiting for. But yes...I would imagine they are interchangable. What happened is GM got cheap and wanted to re-use old parts from the LS1, do they made a piece of crap.

 

i agree GM Build us our overhead cam V-8 (what was wrong with the lt5)
and while your at it make the valve springs more like the comp 918s and the short block more rpm Friendly

 

Sweet. Good luck with all of that too. I can sum up why they made that engine right now. GM is in a slump. They made too many cars, and sales are down. The main reason they aren't selling? Because they are cutting corners. They are pushing out junk that they hope will sell until sales pick back up. And that brings me to my next point...the LS2.

The LS2 is the product of managers at GM saying:
"We need a new engine for our new (ugly, poorly designed) Corvette. Engineers...you will build us a new more powerful engine with 3-valve heads as a gimmick. You will not have any money to design a new engine block, and because we are cheap and suck you will make the majority of the parts interchangable with the LS1/LS6 platform. The low end engine will utilize the old style heads but we will still be able to give the engine a new name. Thank you for your time."

I'd say that sums it up. Thats why I just went and bought a Subaru. Go to www.alldata.com and compare the problems on a Subaru to those on any GM vehicle. The comparison is a joke. GM is a joke.

 

It looks like you will be able to use them on the LS1...looking at the size of the heads though, I think they will be considerably taller and shaped differently due to GMs rigging. These heads will probably require new pushods, intake manifold, and exhaust manifolds. They may not even fit depending on what else will need to be removed for extra room. Who knows where the coils are going to go. If you have a 97-98 with the extra exhaust air tubes I have no idea where they would have to be put. Looks like it CAN be done, but only the very brave WILL do it. In GMs defense I think the revised angle for the exhaust valve will allow for more efficient release of exhaust gasses. It's a shame that new pushrod assembly is going to suck power from the engine.

Oh...almost forgot...isn't it supposed to be a 6 liter for the engine with the new heads. Looking at the spacing between the valves I can see it needing the bigger bore just for the valves to not contact the cylinder wall.

 

It was a huge (wide) motor.

It was heavy.

It was complicated.

It had multiple recalls.

It was expensive to develop.

It was a disaster.

Other than that, nothing at all!

 

Everything I've seen (except bulletin boards on the net) says the LS1 doesn't have three valves per cylinder. That may come, but not with the introduction of the LS2. Looks like the LS2 is an update of the LS1 and closer to an aluminum version of the 6.0 Vortec. I'd bet the parts are interchangable to an extent.

As for the three valve setup being "power robbing" I'd be surprised if it's introduced if it isn't considerably better than whatever it replaces. I heard GM had dynos to check all that.

 

I believe you are confused. The picture you posted is most probably of the new 3-valve heads for the new Z06, and not the LS2, which, as we all know now, has 2 valves.

 

Either way, by the looks of those pics, it doesn't look like the 3V head will bolt up to an LS1 block.

 

Personally, either way, instead of forking out the $$$$$ to get those 3V heads, I think I'll be just getting a [relatively cheap] crate 500hp LS7 engine for a whole bunch of reasons...

 

That may be the Z06 engine...but whatever it is, it is the new engine. Any other poo engine they squeeze out is just going to be some low-end by-product of GM mixing some of these parts with it's old piston-slappin creation. And YES, GM would make a valvetrain that saps horsepower to make a quick buck as a gimmick. Pushrods are nice and all, but if the LS6 had been overhead cam it would have been an engineering masterpiece that produced excellent power. Throw in some variable valve timing and DOHC....man....we would really have something to show those imports and make good gas mileage in the process. Instead GM increases displacement and has some kindergardener throw together a "two intake valve" setup that is just rediculous. Oh well. I hope they find out somebody at GM is stealing money or something and they go bankrupt.

 

The original subject was LS2....not Z06 or whatever. The LS2 is not a 3 valve/cylinder engine. DOHC hasn't done much for Ford. As for GM scamming with a 3 valve setup to sell cars, the average buyer doesn't know 3 valve from 33 valve. Hard to imagine selling many based on another valve in that situation.

I'm curious, what basis do you have for your comments? Sounds like somebody ran over your dog with a GM product and you've hated GM ever since.

 

Anyways...other people brought up the three-valve...so there is it. I was under the impression that was the LS2 myself. Regardless...if they have an "LS2" that is a magical 400 horsepower LS-style engine with LS6 heads....whooptie doo. They did that in the LS6...it makes 400 horsepower. And yes...GM has run over my dog three times...with three new vehicles that had many manufacturing flaws. Additionally two more time with a used Cavalier that blew a head gasket at about 40k miles...and finally my Camaro which has already had the rear rebuilt once at about 20k miles, and the fender tabs have been destroyed four different times by various shops, most of which were Chevrolet shops that I explicitly told them NOT to break my fender tabs...great GM engineering there. GM sucks, get a helmet. I mean come on...like we are supposed to jump up and down after they killed the F-Body and now they repackage their latest engine with the same horsepower and gimmicks. Bah.

 

From some things I've heard that 3 valve setup is better than it looks and will handle high rpms no problem.

Who cares what the import people think about these motors, the fact is these low tech piston slappin POS engines absolutely kick the crap outta those high revving variable valve timing low displacement "technologically advanced" import engines. Variable valve timing might be a nice addition on a new engine but, I really don't see any reason right now to get rid of the single cam in block design. Gas mileage wise I don't know what most imports get, probably decent mileage while cruising(30-40mpg?) but, they don't put out the power most V8s do either. I bet that number drops alot when you start floggin on them also. Also most import cars are light which helps those little motors get better gas mileage. I've heard of M6 Fbodys getting close to 30mpg on the highway which is awesome for such a piston slappin V8 junk engine. I've personally got 25mph in an automatic car with a converter and some bolt ons on the highway before, pretty damn good if you ask me for a probably 400flywheel hp car at the time. Hopefully, if the new displacement on demand stuff works right it will make those numbers go up even higher.

I think I understand that you are just saying you wish GM would make a max effort street car engine with all the bells and whistles but, why should they when the engine they have is pretty much the baddest thing on the road even against the more advanced engines with only maybe a few exceptions. Most of the time more technology in something means higher prices also. Personally, I think GM is doing just fine with the LS1/LS6 platform. That is why they aren't changing it much with the LS2. Why don't we wait and see how the LS2 and 3 vavle variant perform before condemning them.

Oh well, enough ranting.

 

That might not be an LS2...that might be a new 3-valve truck engine.