C6 Vette still uses pushrod power!!

[BAD LS1]

THANK GOD !!! i heard rumors of this thing turning into a "gut less bleow 5K " OHC engine. The rumors can stop now LOL

LS2 = 6.0L 400 CI 400 HP 400 ft/lbs.

Below is anything everything would want to know about the new LS2. Pushrod power.... GM still sees the light !!

http://forums.corvetteforum.com/zerothread?id=721013

[Syclone0044]

Uh oh!! Which one is which!???! I can't tell! :goof

http://my.execpc.com/~thimbel/viperc6.jpg

At any rate, I'm TICKLED PINK to see a 6 LITER, 400 HP engine now standard in all base Corvettes!!!! Truly awesome. I bet it has a ton of HP potential.

[BAD LS1]

Yeah why fock with a good thing like the GenIII platform....

Just do little improvments here and there and BORE & STROKE the mother !!!!

I think this thing will be a superb performer out of the box and will respond ferociously with mods...

Is it pic #2 ???:confused :goof

[Prince Valiant]

I never heard rumors indicating that it wouldn't be anything BUT pushrod power.

I heard that the upcoming z06 (7???) Ls7 motor will be a 427 version of the genIII ;)

[JC70SS]

That is correct. 600 hp 427 possibly with a blower? Doughh!! And $80k+.

[Prince Valiant]

I only heard 500 NA for the z0X

I did see a 600hp blown version...but it wasn't on a ZoX anything IIRC....it was an altogether different car that some were speculating was the next zoX. More like a mid-engine exotic IIRC.

Do you have more info on that?

[95 TA - The Beast]

Chris: you are correct about the 500hp rating... They are shooting for 500hp, 500tq out of a V8 for the next 'special edition' Corvette...

I know a few guys that did some of the prototyping and development work on the new motor for that setup, and well since I can't just come right out and tell you some of the special things they are doing for that setup (since I did make a promise not to say), I will go out on a limb and mention that some of the stuff they have designed for it has never been seen on a production STREET engine... As in we will be seeing some true normally RACE-ONLY type engineering in the next motor... As it is, if the things I was told come to light, GM is trying to max-out the engine platform before going totally different in the next 5-6 years... Or it might just be an evolution of sorts... I guess we'll just have to wait and see... ;)

[Prince Valiant]

Well, one of the things I think I heard about was using a 3 valve per cylinder arrangement while still using the cam in block set-up...

...and I can't remeber if it was GM or not...but I did see one motor that used a Dual cam set-up with both cam placements in the block, so I think in the next few years we're gonna see some crazy stuff :thumbsup

[Crawlin]

per Ryan from Hall Chevrolet, the z06 cars won't be available until next year and will be in the 70k price range. Basically evening it up with the Viper. That's the one thing it had going for it, it was almost half the cost of the viper for very similar if not better performance. Good thing we only have 1100 miles on my pop's Z06, it's getting traded in soon :) Soon as the definite pricing comes out to Ryan(not MSRP ;) ) my dad might be looking at signing up for one.

Chris

[Crawlin]

oh yeah, forgot to ask Tom...

did they say what is compatible between the two engines? Just wondering about the crank for the most part. Since Eagle came out with that new crank, it would suck to have to wait for them to make another one for the LS2 engines.

[95 TA - The Beast]

http://www.z06vette.com/gallery/data/500/35c6head2.jpg http://www.z06vette.com/gallery/data/500/35c6head1.jpg

Ok, so the 3-valve setup does look pretty funky... :)

[BAD LS1]

What a mechanical Ass hole that thing looks like !!

Now seeing these pics i will have no part with this engine...

Might as well put OHC's in it and call it a Ford. :crying

I was mislead to believe it actually was a traditional pushrod engine i should have know as soon as it mentioned Cam in block, thats it. I see this valvtrain setup was modeled after the Duramx diesel and 5.7L Hemi.

Tim you can keep this for your self man LOL

[Prince Valiant]

What do you mean tom? The 426 hemi just has longer rocker arms...nothing like that. The current Hemi has fairly straight forward rocker arms that are similiar to the 454 rat motor.

Heh....new motto More pushrods = MORE POWER!

[BAD LS1]

I dont know man this thing just doesnt look all that good to me.

[Prince Valiant]

my only concern looking at it is the exhaust lift....it almost looks like if you have just enough, the push rod tip could slip out.

It does look like something that might be difficult to assemble (although I know it's probably just as easy with a current set-up)

But if you look at the rocker arms...they look pretty substantial.

I've heard someone mention that this set up is good to 9000rpm (I can't verify and am disinclined to readily believe it) but that looks like an awfull lot of valvetrain mass to be playing with. Add to that hydraulic roller lifters along with the relatively long throws of the crankshaft to get the displacement up to 427ci and it wouldn't be a strectch for the motor to put out only 6000rpm redline....which doesn't bother me one bit :D

[BAD LS1]

Yeah there is just way too many moving valvetrain parts there for it to be reliable above the 6500 RPM mark IMO. Im just a stickler for tried and true conventional desgin engines, this SOB is way off the wall, Too exotic almost!!

[Prince Valiant]

Actually, looking closer at the motor, your right, there are some similiarity to the old 426 hemi...but what the chevy motor lacks from the mopar would make life alot easier on it if it did have it....namely a dual shaft mounted rocker arm set-up and using a longer, larger exhaust rocker arm.

To do it like the current hemi though, you'd probably have to rasie the cam a few inches in the block...or engineer a dual cam set up with the exhaust lobes mounted on a cam placed higher than the intake cam by a few inches...or a cam controlling the valves on one bank, and another working the opposite bank...heh, the possibilities are endless.

[Syclone0044]

I have seen no evidence suggesting the LS2 "C6 Motor" is ANYTHING but a standard 2 valve OHV motor extremely similar to the LS1. So Tom, you can relax :D

[BAD LS1]

http://www.z06vette.com/gallery/data/500/35c6head2.jpg

If we look closely this has a up-shooting water pump neck and one tall ass intake with throttle body out the side and the powersteering pump location/style is that of a truck along with the threaded hub on water pump pulley to accepta clutch fan.

This is a future truck engine prototype !!!

THE LS2 engine is a 2 valve no question!!

[BAD LS1]

Here's some pics of the real deal LS2 i found still sporting 2V a cylinder, looks very much like a regualar LS1 except fora few traits i see different:

http://www.toddlamb.com/s3web/images/tl6-0114.jpg

http://www.toddlamb.com/s3web/images/tl6-0115.jpg

http://www.toddlamb.com/s3web/images/tl6-0116.jpg

http://www.toddlamb.com/s3web/images/tl6-0117.jpg

http://www.toddlamb.com/s3web/images/tl6-0116.jpg

http://www.toddlamb.com/s3web/images/tl6-0118.jpg