Chevy running outta steam?

[MR 325]

It's 2012, 26 mpg highway is terrible by today's standards.
Pushrods, 2 valves per cylinder, huge displacement. GM is still living under a rock.

So, what other 400-500hp sports cars get high 20's in the MPGs?

Serious question, I really don't keep up on new car crap.

[JasonC]

So, what other 400-500hp sports cars get high 20's in the MPGs?

Serious question, I really don't keep up on new car crap.

Yeah i was going to ask that too. Cause i think people are forgetting that this engine is going into a Corvette, not an everyday point A to B car. And since we are talking MPGs. The LT1 and LSx that came before this engine has been known to get high 20's low 30's. I may come off as a GM fan boy, but GM isn't stupid like most people think. And as for me, i do perfer the older SBCs before the newer LS series came out.

[slammin.e28]

Toyota is the #1 American made car now.....GM is second.


Just sayin. I don't think Toyota has used a pushrod in decades.

[InuFaye]

Toyota is the #1 American made car now.....GM is second.


Just sayin. I don't think Toyota has used a pushrod in decades.

Toyota makes the most boring cars alive.

The GT86 is good because its got a Subaru heart.

[M-technik-3]

26 mpg from a 450 is good numbers look at others. They have resorted to having autoboxes with 8 or 9 speeds that's getting crazy. These engines are rated at less than they have been producing just look at the numbers people are getting out there.

The old LT1's got what maybe 7 mpg in 60's thanks to carbs.

I'd take a new C6 Grand Sport in the carbon package any day so long as it's a fixed roof coupe.



I like it.

[Vspec]

And IMHO, i think they need to drop the cubic inches crap and start to call them by their liters.?

There, I fixed it for ya :p

The SBC may be overdone, un-original and downright sacrilegious for some, in the end nothings beats its effectiveness to provide acceptable power and torque for the price.

Now if they could only fix the horrible interior of the 'Vette....

[straightsixe30]

I would have to say that Chevy know's the pushrod v8 so well by now that it would be folish to try and change that layout, since by now its probably reaching perfection of that specific design, whether it be from the 1950's or not.

I also think there is defintly a much need spot to be filled (and you bet GM knows this) by a 32 valve gm small block.

Also, did you guys forget what torque is?

[iansane]

I like how they comepare it to the BMW M5 engine saying the LT1 is smaller and lighter. But say nothing about hp/lt or the fact that the BMW engine has great MPG.

Ithor way they need to move on from the pushrod. If they do not do it in the next revision I think they are going to be left behind, with variable valve timing, lift and soon camless valves GM is going to face a tuff time trying to sell a V8 to the general consumer.

You know GM has had VVT pushrod v8 engines for a number of years, right? I think saying GM is going to have a hard time selling a torquey, high power, high efficiency v8 is like saying Porsche is going to have a hard time selling an ass backwards drivetrain configuration. Yes it's not the most effective but it's been engineered out the wazzoo and performs amazingly.

The only issue I see is that GM isn't trying to develop alternative engine platforms along side the small block v8. If they do get regulated into extinction they'll follow the same path ford did. 15 years of big, heavy, under-powered, underwhelming motors.

I most definitely am a GM fanboy but I can appreciate anyone's technology and love to see advances. If Ford, Dodge, or hell even BMW had a small, cheap, efficient, durable motor that made a lot of power and sounded awesome I would've swapped that into my trans am instead of an LSx but it's hard to beat in any category. (Obviously not saying it's UNbeatable). My 325 will be getting my hand-me-down LSx as soon I finish the turbo build for my trans am.

[VAE30FTW]

hmm its also funny that the M3 they compared it with goes 0-60 in 4.8 seconds when its listed officially as 4.4 seconds also the new Porsche 911 does 0-60 in 3.7 seconds hmm i like corvettes but really only 450hp thats not much more than the current base model power plant also BMW pulled 414 hp out of a 4 liter and chevy cant pull more than that out of 6.2 liters really?

The E90 M3 engine has no torque the LT1 has gobs. TQ is what gets shit to move fast anyway.

[LSM3]

The level of fail in this thread is amazing..lol. I bet half the people commenting have never even owned a 300 whp car....

[JasonC]

The level of fail in this thread is amazing..lol. I bet half the people commenting have never even owned a 300 whp car....

my 300+hp car is put away for the winter :(

[Massimo]

You know GM has had VVT pushrod v8 engines for a number of years, right? I think saying GM is going to have a hard time selling a torquey, high power, high efficiency v8 is like saying Porsche is going to have a hard time selling an ass backwards drivetrain configuration. Yes it's not the most effective but it's been engineered out the wazzoo and performs amazingly.

The only issue I see is that GM isn't trying to develop alternative engine platforms along side the small block v8. If they do get regulated into extinction they'll follow the same path ford did. 15 years of big, heavy, under-powered, underwhelming motors.

I most definitely am a GM fanboy but I can appreciate anyone's technology and love to see advances. If Ford, Dodge, or hell even BMW had a small, cheap, efficient, durable motor that made a lot of power and sounded awesome I would've swapped that into my trans am instead of an LSx but it's hard to beat in any category. (Obviously not saying it's UNbeatable). My 325 will be getting my hand-me-down LSx as soon I finish the turbo build for my trans am.

Yeh I know they have VVT but a single cam is not really ideal for that you really want independant exhaust and intake vvt. But what ever.

The E90 M3 engine has no torque the LT1 has gobs. TQ is what gets shit to move fast anyway.

That is the way of the modern car. Shorter stroke, means more RPM which means more HP, the loss of tq is made up by the new 7 and 8 speed boxes.

[K1CKBAC]

I keep hearing smack about push rods but don't see anyone giving proof on why it's bad. It's got advantages. I don't care if its pushrods, 2 valves, ect. The LSx motors do what they are supposed to do and they do it well. I'm sure this will be a bad ass motor too.

[JasonC]

Here they are testing it out on the stand. Check out 1.09 in, tilt test. Looks like good news for rock crawlers and wheel standers!

[rich4rdee]

Yeah i was going to ask that too. Cause i think people are forgetting that this engine is going into a Corvette, not an everyday point A to B car. And since we are talking MPGs. The LT1 and LSx that came before this engine has been known to get high 20's low 30's. I may come off as a GM fan boy, but GM isn't stupid like most people think. And as for me, i do perfer the older SBCs before the newer LS series came out.

isn't the MPG from the LSx series due to tall gearing, light weight, and aerodynamic shape of the performance cars they're stuffed into? i'm pretty sure they mentioned that a variation of this motor will also go in their pickup trucks too.

the pushrod motor is a tested and proven design which GM has engineered to perfection but the technology appears tired and lazy imo. i guess to me it just seems that the big 3 german brands are spoiling us with lots of interesting, complex FI motors. (tri turbos anyone?)