![]()
GM has announced the pricing for one its most anticipated new sedans, the rear-wheel-drive Pontiac G8. The V6 powered model starts at $27,595 and the G8 GT with the V8 powerplant starts at $29,995.
The 3.6L V6 puts out 260 horsepower and is mated to a five-speed automatic. The more powerful G8 GT is powered by a 6.0L V8 that puts out 361 horsepower and 385 lb ft of torque. The V8 is mated to a six-speed automatic. Unfortunately no manual transmission is going to be offered. It's too bad that the concept version teased us with the stick shift transmission.
According to Jim Bunnell, Buick-Pontiac-GMC general manager, the GT version is "the most powerful vehicle available for under $30,000.”
The G8 will be in showrooms early next year.
Related Stories:
Would You Pay $35K for the new 2008 Pontiac G8 GT?
Pontiac is Planning a 2009 Solstice Coupe and RWD Versions of the G5 and G6
PRESS RELEASE:
Pontiac Announces G8 Pricing
New RWD Performance Sedan to Start Under $28k
DETROIT - Pontiac today confirmed pricing for its new rear-wheel drive G8 performance sedan will start at $27,595 when it hits the streets in early 2008. The V-8 powered G8 GT will be available for $29,995.
"The G8 represents the next phase in Pontiac's commitment to bring seductively designed, high-performance vehicles to the showroom floor," said Craig Bierley, Pontiac marketing director. "Our dealers and customers have been anxiously waiting for this vehicle since we first showed it at the Chicago Auto Show in February, so we're really excited to get this car on the street early next year."
The G8 is powered by a 3.6-liter VVT V-6 engine and five-speed automatic transmission and comes equipped with a number of standard convenience and safety features, including StabiliTrak electronic stability control, six airbags and OnStar. The G8 GT ups the ante with a 6.0-liter V-8 mated to a six-speed automatic transmission and additional standard equipment.
Customers can get a closer look at the G8 at www.pontiac.com/g8.

Comments (72)
This is a rebadged Vauxhall VXR8 which itself is a rebadged HSV Clubsport R8
Posted by chris | October 2, 2007 5:03 PM
Posted on October 2, 2007 17:03
Is HSV short for Holden? I know that the GTO was originally designed by Holden in Australia as the Manaro. From the looks of it, Holden should design all Pontiac vehicles from here on out. This car looks like an EVO from the front, and the sides and rear remind me of a BMW or an Audi. Not bad overall. The interior however is questionable.
Posted by MW | October 2, 2007 5:48 PM
Posted on October 2, 2007 17:48
So, not only are they wussing up the LS2, but no manual? Gotta hand it to GM, they know how to take something decent and flush it down the toilet.
Posted by Remy LeBeau | October 2, 2007 5:54 PM
Posted on October 2, 2007 17:54
Wow, I didn't think the GT model would start life that low. That's pretty damn good. Looks good too.
Posted by Alexvrb | October 2, 2007 5:55 PM
Posted on October 2, 2007 17:55
That sucks for no manual. But at least its still a six speed. I see they kept the excellent interior of the GTO though. And its not like they gimped the LS2. Just a different cam. Easily fixed.
Posted by David | October 2, 2007 6:09 PM
Posted on October 2, 2007 18:09
Sounds good, cheap too. Pontiac just keeps making better and better cars. I'm not sure why their sales still suck. Between the G5, G6, Solstice and now G8, their cars are at least as good as the competition and cheaper for the most part.
Posted by gm0n3y | October 2, 2007 7:00 PM
Posted on October 2, 2007 19:00
Lol, another rebadged aussie Holden. Totaly designed and built in Australia...and HSV stands for Holden Special Vehicle by the way.
Posted by meat_helmet | October 2, 2007 7:39 PM
Posted on October 2, 2007 19:39
lame, lame, no stick.
jesus christ, what is wrong with car companies these days.
the Charger or Magnun all auto. the skyline also auto(dsg)
now the father of all muscle car also auto.
serious I can't imagine driving this car in dangerous curves or making high speed turns.
maybe it's only good for 10sec drag racing.
Posted by HanZ | October 2, 2007 7:56 PM
Posted on October 2, 2007 19:56
Actually HSV stands for Holden Special Vehicles - plural. It is the performance division of Holden Australia. The G8 is a rebadged/tweaked Holden Commodore that has had the HSV treatment - kinda like AMG for Mercedes or M series for BMW - but cheaper! The GTO is a Monaro, not a Manaro btw. Both are classic aussie muscle cars with fantastic racing histories. Now, if only Holden would remake a Torana...
Posted by Mountie | October 2, 2007 8:01 PM
Posted on October 2, 2007 20:01
Lack of a manual would be my only complaint. GM has been on the up and up as far as reliability goes, and considering this is actually a Holden design I would imagine it would be a very reliable car.
I can kind of see hints of and Audio and TL in the side profile. All around a damn nice looking car. Imagine pulling up next to a $40k plus TL Type-S and roasting it.
Posted by Gary | October 2, 2007 8:09 PM
Posted on October 2, 2007 20:09
It is indeed the most powerful vehicle that (new) comes in under $30,000, but it better have road holding capabilities.
Also, is it true that this is the LS2? I thought it might be an iron-block version (therefor the reason it had less power), but if it is an LS2 but with a different cam, then :)
*Who wants to void a factory warranty right the fuck away?*
Posted by Allen | October 2, 2007 8:18 PM
Posted on October 2, 2007 20:18
It blows my mind when companies release seemingly performance centric vehicles, and fail to offer a manual transmission.
Here's lookin at you Pontiac G8 GT (another example being the Lexus IS-350 and possibly the LF-A, teh fuk?)
Posted by stephen | October 2, 2007 8:59 PM
Posted on October 2, 2007 20:59
A 6.0L that does less than 400 horses. Thats darn right wimpy power for such a large displacement engine. Other manufacturers do more with less...
GM should be ashamed.
The fact that there is no manual is even worst. At minimum GM should have put an auto stick in there. Chrysler offers it on its LX sedans. You can't have a rear wheel drive performance vehicle when your stuck with a automatic only.
I think GM is off to a good start though. Tune the V8 up to 400 horses and add an auto stick as standard and this thing will sell like hot cakes.
I wish Ford would bring the Falcon over here. If the G8 sells well, Ford will have to bring the Falcon over.
Posted by Darnell Morgan | October 2, 2007 9:10 PM
Posted on October 2, 2007 21:10
It is curious that GM will not sell this vehicle in the US with a manual, as the near-identical vehichle in Australia (Commodore SV6, SV8, SS, etc etc) all have a 6 speed manual option. I would take a punt that its a cost cutting option as they then only have to import one transmission to the states.
Posted by Jason | October 2, 2007 9:12 PM
Posted on October 2, 2007 21:12
It is curious: that GM would produce two versions of that V8 and both would be aluminum. I guess they reduced the compression ration so it'd run on regular 87 octane. Still, a tuned up engine that ran on 91 octane (LS2?) would be nice.
At least it doesn't weigh too much, about as much in the curb weight as the 500i. Just hope its not nose heavy.
As for the manual, not everything on Torque report seems to be 100% accurate all the time. A lot of sources still report it as having a 6 speed manual option.
One more thing: is it not strange that today a manual is the optional equipment? Hah, early this decade manuals were standard and automatics still options. Now its reversed. Nothing wrong with that, indeed a lot of people who don't belong driving sticks won't now.
Posted by Allen | October 2, 2007 9:43 PM
Posted on October 2, 2007 21:43
Hold on...how are people not astounded that GM needs 6 gigantic liters to get only 361 horse? Only an American car company can produce such a pathetic engine. Yes, it the bhp number is big, but compared to the liters required, quite pathetic. 60.2hp/L is worse than my 12 year old Subaru grocery getter.
That said, I'm sure with cams, headers, port/polish, lighter internals, tuned intake, remapped ECU, and high-flow cats/exhaust, the thing might be able to push a still pitiful(in terms of displacement) 400-425 horse.
I don't even want to know the mpg of that thing. Plus, no manual transmission? GM really knows how to drive me away from their cars...
Posted by Bimmerman | October 2, 2007 10:17 PM
Posted on October 2, 2007 22:17
Look at the picturs again. Both interior shots shows manual trans. Look at the stick and you'll see gear numbers.
I'm sure to compete with euro cars GM would not be that stupid to omit that very important delail.
Posted by AC | October 2, 2007 10:39 PM
Posted on October 2, 2007 22:39
Look at the picturs again. Both interior shots shows manual trans. Look at the stick and you'll see gear numbers.
I'm sure to compete with euro cars GM would not be that stupid to omit that very important delail.
Posted by AC | October 2, 2007 10:40 PM
Posted on October 2, 2007 22:40
Look at the picturs again. Both interior shots shows manual trans. Look at the stick and you'll see gear numbers.
I'm sure to compete with euro cars GM would not be that stupid to omit that very important delail.
Posted by AC | October 2, 2007 10:40 PM
Posted on October 2, 2007 22:40
Look at the picturs again. Both interior shots shows manual trans. Look at the stick and you'll see gear numbers.
I'm sure to compete with euro cars GM would not be that stupid to omit that very important thing.
Posted by AC | October 2, 2007 10:41 PM
Posted on October 2, 2007 22:41
Horsepower ratings are finicky critters... at what RPM does the motor make the quoted bhp?
Chevy has been historically notorious for quoting lower RPM/horsepower figures on its lower end cars to avoid "competing" with the performance cars.
I wouldn't be surprised if the G8 V8 can really pull a heck of a lot more bhp at higher RPM.
Posted by Tom Underhill | October 3, 2007 12:09 AM
Posted on October 3, 2007 00:09
Ummm, I'm not exactly a car fanatic, but it seems to me that the interior pics show a manual transmission...
Posted by SEALBoy | October 3, 2007 12:59 AM
Posted on October 3, 2007 00:59
probably going to be the biggest piece of shit, with the worst gas millage for under $30,000 too
Posted by amac | October 3, 2007 1:16 AM
Posted on October 3, 2007 01:16
Ok
So you yanks stop winging about power (and also for the other people obviously from other countries bagging the engine) this is actually the least powerfull V8 available in Australia for the commodore. There is also a 307kw version about 410hp.
Oh and those people that are bagging the power.
It is made at 5700rpm Aussies version with 270kw.
Not to mention 530NM of torque at 4400rpm.
Also they rev at something like 1200rpm in 6th gear whilst going 100km/h on a freeway. Id like to see some crappy high revving euro v8 do that and still be able to accelarate.
And yes we can get 6 speed manual overhere.
Onlything i'm gonna winge about is why is it cheaper in the states then what it is in Australia. The G8 GT is basically like our commodore SS-V. Yet our SS-V costs $AUD52500 plus another 2000 for an auto. Thats like $45000 US for an auto model here. No fair. Its not just this car though It's very car on our market costs a lot more.
Still a much better deal than a Merc E-calss or BMW 5 series though. These things trash them in value for money.
Posted by Luke | October 3, 2007 2:44 AM
Posted on October 3, 2007 02:44
HP per liter of displacement is interesting but is not a measure of how good an engine is. HP per pound of engine weight (and to a certain extent overall engine size) is much more important. Additionally the entire power band is important, not just peak numbers. Chevy's small block V8 has a nicer power band than most engines making good power across a wider range of RPM's, giving you more usable power when driving. The V8 in question here avoids using parts like dual overhead cams which can give you more horsepower per liter but add weight. Really if you actually know anything about cars and engines the numbers sound decent IF the engine includes displacement on demand and is tuned for 87 octane.
Having said that I won't be getting one, if I get a sedan in the near future it'll have AWD because I'd like a second car with AWD for easier winter driving and such. But if you want a full size sedan it'd be ignorant to dismiss the G8 without checking one out. Of course it also seems a bit ignorant for GM to not offer a manual transmission option, the engineering work has been done and I find it hard to believe any serious market research didn't show significant demand for a manual.
Posted by Tal | October 3, 2007 4:16 AM
Posted on October 3, 2007 04:16
@Tal: how can the car not have manual transmission when the pics clearly show a manual stick?
Posted by SEALBoy | October 3, 2007 6:54 AM
Posted on October 3, 2007 06:54
Another proofpoint that when americans stay away from specifying and designing a car, you might actually end-up with something.
So they had to ask the Australians.....
Posted by Steadler and Waldorff | October 3, 2007 7:57 AM
Posted on October 3, 2007 07:57
I have heard that the manual version will be available in march. The majority of car buyers want a automatic (not everyone is a car enthusiast), the manual gets second priority.
Posted by Jacob | October 3, 2007 9:23 AM
Posted on October 3, 2007 09:23
That's an expensive car that won't sell in the long run. You'll be lucky to get a V6 out the door below 30k onced optioned. Why does GM always screw up something good.
Posted by Mike | October 3, 2007 9:45 AM
Posted on October 3, 2007 09:45
The car will have a manual, just not at launch time. You'll have to wait a few months. I'm hoping they make an LS3 version soon.
Posted by Darmok | October 3, 2007 9:48 AM
Posted on October 3, 2007 09:48
Very nice. That interior is very Holdenesque and not so much Pontiac which is a GOOD thing. Looks fairly upscale for a not so upscale price. I'm looking for a replacement for my last gen TL Type S and 361HP sounds good to me. Since this is the 6.0L LS2, wouldn't you think there might be a few cheap mods and/or an aftermarket handheld tuner to add some easy HP?
Posted by D | October 3, 2007 9:56 AM
Posted on October 3, 2007 09:56
Dear Matt Damons ,
Gee there is a manual in the picture??? But I can't read..... it must be manual???
The article says:
"Unfortunately no manual transmission is going to be offered. It's too bad that the concept version teased us with the stick shift transmission."
DID YOU FREAKING READ THE ARTICLE????
Who cares if it is 6.0L.. Guess what Genius??? Chevy has been doing this for a while. You ever heard of those cars called the Corvette or Camaro ????? The whole point of selling this car is that it's is priced near/under 30k.....
What you want to buy a Porsche 911/ Turbo.... or one of those 4 banger rice burners??? for more money ???
get a clue... They build cars to sell not to entertain a 13 year old boy in his mom's basement eating a hotpocket....
Austrailia builds a decent car do you want a medal of honor badge or something? Besides having a lot of poisonous snakes, and kangaroo poop what else do you got? haha...... Crocodile Dundee and Russel Crowe??
The automatic is default because it will sell to people who have money!!! Not speed racer flipping fries at mcDonalds. Simply easier to produce. Especially when GM needs to save every penny during production.
Posted by Josh | October 3, 2007 9:59 AM
Posted on October 3, 2007 09:59
First off Josh I don't like your tone. *spaghetti western music plays*
As for the manual in the picture, that is the concept car, which is vastly different from the production car.
Also, while I agree horsepower per pound is important, saying that dual overhead cams add weight is laughable. BMW has a DOHC engine coming out for the M3 that weighs 400lbs. A measly 400lbs! The blocks on most GM V8s usually weigh 225-300 lbs by themselves, the weight of the engine after you add all the parts can sometimes (I have built small-block chevys before) weight up to just under a thousand pounds! Hell, if you want to hear a story, I can write an full page article for the New York Times describing all the hell we went through with an old-style GM 427 once.
Posted by Allen | October 3, 2007 11:30 AM
Posted on October 3, 2007 11:30
I simply do not get the fascination with people on this blog with weak engines that needed to be revved to the next century to make any power.
Everyone complaining about 6 liters, how much horsepower and torque do your high revving euroweenie engines make at 3,000 RPM and under where you'll spend 95% of your time? Meh, euro buzzbomb engines at 6,000 RPM will be lucky to make the power this engine does at 3,000 RPM.
Guess what, I'm going to hit 3,000 RPM and be gone, and even cruising at 65+ in 6th gear at 1,100 RPM while you are watching your tach at 2,000 RPM waiting for it to crawl up to 9,000 RPM.
Thank you, shut up now.
BTW my car is only 4.6L and it is DOHC and it makes 700 ft/lbs just after 2,000 RPM.
It takes a 6-7 L V12 @ 9,000 RPM that gets 10 mpg for you Eurobrats to make that much power, whats wrong with THAT picture, hmmmmmm??
Thats what I thought.
Posted by Chris | October 3, 2007 12:02 PM
Posted on October 3, 2007 12:02
Allen:
Uhm a complete LS1 engine, totally dressed with all accessories and fluids, weighs something like 450 lbs.
I think there are some serious misconceptions over engine weights... There is like a 70lb difference between a iron and aluminum block, as the aluminum block needs more thickness and webbing for strength, thus negating some of the advantage.
Also DOHC heads are MASSIVE and weigh much more than a LS1 head, even when aluminum.
And the little things like that long heavy timing chain, all the idlers and tensioners and guides (none of which are necessary at all on a cam in block engine), 4 cams instead of 1, etc.
Its common knowledge that a DOHC engine design weighs more, occupies more space, and is generally lower displacement than a comparable non OHC engine of the same dimensions.
Posted by Chris | October 3, 2007 12:49 PM
Posted on October 3, 2007 12:49
"Everyone complaining about 6 liters, how much horsepower and torque do your high revving euroweenie engines make at 3,000 RPM and under where you'll spend 95% of your time? Meh, euro buzzbomb engines at 6,000 RPM will be lucky to make the power this engine does at 3,000 RPM."
And Chris just proved that he's never looked at the specs or read anything about European cars!
*hands Chris the Dumbass Comment of the Week Award*
You put a lot of time and effort into being this uninformed...you deserve to win!
Posted by Remy LeBeau | October 3, 2007 2:10 PM
Posted on October 3, 2007 14:10
*High fives Remy*
Chris, comparable German cars have been beating American cars on the track for decades. Only in a drag race do some American cars do better, and/or if a niche model like your Cobra comes along. But while Ford had to make a DOHC 4.6L and specially tuned suspension for the Cobra to beat Euro cars, nearly all Euro cars in their standard forms will beat standard form American cars.
As to weight, once again I call bullshit on you. I've built small block chevy engines before. And I will assure you that there is no way a LS1 weighs a mere 450 lbs once built. As to that 427 that weight just under a thousand, let me tell you what happens when you build a twin-four barrel setup sometime. Weight. Gets. Added.
As to weenie engines, its funny, Formula 1 cars have been running Honda V8s (a 3.5 Liter) and making oodles of power for some time now. Granted these are specialized track engines, but its funny that every NASCAR driver including Jeff Gordan that has tried a Formula 1 Car has been amazed by the power and speed of the cars.
And also, if American engines and cars were so great, why don't they win more at Lemans or on the GT series cups?
Finally, looking at the spec of an 03 Ford Mustang, I find a few things. One is the presence of three 4.6 Liter engines, a 260 hp version, a 305 hp version, and a 390 hp version.
It, the 390 hp version, makes its power at 6000 rpm and its 390 ft-lbs of torque at 3500 RPM. The 305 hp version comes it at 5800 RPM and its 320 lbs of torque come at 4200 RPM.
Compare this to a 2008 BMW 650i. Its 4.8 Liter, lightweight V8 makes 360 hp at 6300 RPM and its 360 lbs of torque at 3200 RPM.
This means that the base 650i coupe has more power and torque at better revlines than a Mustang Mach 1, not to mention the better weight distribution, and luxury interior and ammentities. It takes an extremely limited production run Cobra SVT, which I can read off lists of maintence issues for, to beat a German luxury car on the track.
The BMW is not even a race-car: its just the luxury coupe.
As to euro buzzbombs: I'd really like your car to say that to the front fascia of a C65 AMG Black edition...
Posted by Allen | October 3, 2007 3:18 PM
Posted on October 3, 2007 15:18
Actually, lets do that race. My BMW M6 versus your Cobra SVT. I have a 500 horse V10 with 383 foot-pounds (barely less than your Cobra). It revs extremely fast too. First lets do a drag race, then a road race.
Afterwards, I do take checks, but cash is prefered. Prepaid gift cards to Ralph Lauren and Hugo Boss are fine too.
Posted by Allen | October 3, 2007 3:23 PM
Posted on October 3, 2007 15:23
Although I will say this: price to performance, the G8 is a hard to beat car. Now for those of us with bigger pocket books we can easily surpass this. But if your like me and like to shave pennies where possible (to spend on the woman in your life), then the G8 can make sense up until that nose section becomes apparent.
I'm sure Chris will agree on this even: look at that nose on the concept model (which is pictured above) then look at the nose of the production car (which can be viewed at the G8 minisite) and say it with me: "Damn. GM can kill wood like only Hilary Clinton could before them."
Posted by Allen | October 3, 2007 3:28 PM
Posted on October 3, 2007 15:28
Uhm my Cobra is pushing about 700 HP to the wheels. Kenne Bell 2.4 twin screw, full Bassani, 60# injectors, 5/8" rails, etc... if I get around to the twin turbo and stroked bottom end, expect 1200 HP on pump gas @ 21 psi. It will still be about 5.3L.
About 3,700 LB weight. Whats a BMW M6 weigh? 4400 lbs? "Man that thing must not corner or change direction for squat with all that weight, must only be good for a straight line" would be what someone would say if an American car weighed that much...
And I guess you've never seen a '03 Cobra road race and autocross at the front of the pack with BMWs and Corvettes either?
Haven't paid any attention to the G8, but I liked the LS2 GTO, that was a nice car. Hate to see it go so quickly.
BMWs are nice cars, but people quickly forget that they are comparing cars that are 2x or more different in price. "My ($50,000) BMW smokes that piece of junk GM ($15,000) Malibu lawlz0rz!" It better... or you have problems.
As for Remy:
Murcielago 6.5L V12 640HP@8000 RPM and 478TQ@6000 RPM...
I make more than that at 2000 RPM with only 4.6L, why does Lamborghini need 6.5L huh? Now I'm not trying to compare my Cobra with a Lambo, but I'm just showing how absurd these 'horsepower per liter' arguments are; you can spin it either way.
You can say no fair my car is modified, but some of those modifications are things that were left out by the factory to keep sales price down, while they are standard on a Lambo because price is not an issue.
Also note, that even while "limited production" that highly tuned SVT Cobra that it takes to beat a German luxary car is still half the price...
Wonder what kind of average Mustangs we would have if people were willing to pay $30-50,000 for them?
There are some things I agree about, esp on American interior styling sucking the big one. Stiched leather and aluminum accents go a long way to making the inside nicer and don't cost too much.
But the whole "if it doesn't have 300 valves and rev to 10,000,000 RPM and make 1000 HP with 0.001 liters it sucks" and "its not a BMW so its only good in a straight line" type of BS needs to stop.
As for the weight of a LS1, look it up, you already have your browser open. I'm not a GM/Chevy person, but I cross checked that number across multiple sources and it's generally around 450 lbs. It's a fact that a LS1 weighs as much than most DOHC V6s and fits in less space.
Posted by Chris | October 3, 2007 5:05 PM
Posted on October 3, 2007 17:05
Oh Remy, you were comparing a 650i's 4.8L V8 to a 4.6L Mustang V8. Try something in the same price range.
$70,000 BMW 4.8L
16/22 MPG
360HP @ 6300
360TQ @ 3200
$70,000 Z06 7.0L
16/26 mpg
505HP @ 6300
470TQ @ 4800
And the LS7 is a 'highly engineered" engine comprising of lightweight aluminum and titanium throughout. I don't feel like looking up the numbers, but I bet it's lighter than the BMW engine.
Now why don't we have LS7s in average luxury coupes? Because our average luxury coupes don't cost $70,000 like a Z06 or 650i. Interesting that you keep saying that the BMW is just a typical luxury coupe, nothing special, I didn't know $70,000 luxury coupes were high volume average cars... You're just the kind of person that would say a 318 is better than a Mustang, then use the specs of the 650i to prove it...and then by association of name brand, the 318 is also better! Really winner right there.
I think somebody is a easy target for marketing and falls for buzz words and acronyms. That or just a patriotic Euro-peon that by default, bashes anything American.
Posted by Chris | October 3, 2007 5:22 PM
Posted on October 3, 2007 17:22
BTW Remy, one last thing...
The reason Formula engines have small displacements and rely on high revs is because they are restricted to a maximum displacement and revs are the only other way to flow the required air/fuel to make a given power target.
Do you think if that limit went up that Ferrari would be content staying with a 2.4L engine if everyone else was allowed to run 8.0L? If a 2.4L Formula engine designed to make maximum possible power out of the the given displacement can make as much power as it does, how much power do you think Ferrari could make if it was allowed to use 8.0L?
Do you think Subaru would stay with a 2.0L rally engine if everyone else was allowed to use 4.0L because they can do it better with a high revving 2.0L? Please say "no" so I can laugh at you.
Ironically, to your dismay, the displacement is actually limited in those classes, not because higher revving small displacement engines are superior in any way... displacement limits were put in place to limit power output, not because higher revving is better :-)
Posted by Chris | October 3, 2007 5:34 PM
Posted on October 3, 2007 17:34
First Chris, I know the Cobra well, I've driven one now even. Second, somehow I doubt you will be on pump gas at 1200hp. And even so, I love to laugh at your logic: your saying a 4.6L can reach 700 hp while BMWs 4.8 Liter cannot on pump gas. All because of what, a better cam setup?
Its not just me, its scientific and engineering fact that a DOHC setup makes more power than a pushrod setup. If you go to an engineering school and tell them pushrods are better, you are going to get laughed at.
Second, I, not Remy, talked about Formula cars. Go figure you'd screw that up.
Third, a 7.0L engine that needs titanium rods and rings and magnesium alloy everything to remain at the LS7s weight is pathetic. Euro- V8s have been weighing in at what the LS7 weighs for quite some time without it, and with Magnesium alloy and the new M3 will have far lower weight that most other engines in its class.
And like we were saying earlier, its pathetic that American makes need so much displacement to make so much power. As I have stated (and you agreed) BMW makes 360 hp on 4.8 Liters, while GM is making that on six! If BMW were to make a 6 liter with as much efficiently as its 4.8, it would have 450hp! And LS2 did not come CLOSE to that, AND it too ran on premium fuel. So When GM makes a 6.0L V8, it gets 400hp on premium gas (the LS2). If BMW were so bad as to make an engine that large, it'd make 50 hp more and have more torque.
Also, just to let you know: your DOHC Cobra V8 is vastly different from a 327 Small black chevy, but if you are going to take displacement on it to 5.3 Liters (basically that translates to 327 cubic inches) AND be getting 1200hp out of it on pump gas, you will make yourself a legend. The most I've ever reliably got out of a 5.3 Liter GM V8 (of the two I've assisted in building). The best I've ever done with one of those was 950hp, on race fuel. A 97 Chevrolet Tahoe with the old 5.7L LT1 I saw once at a Texas autoshow making 840hp on race fuel. Thats pretty bad.
And to make a little more mockery of this "displacement" arguement: Dodge makes an 8.3 Liter V10 that makes 610 hp. With the 75hp per liter of BMW's caliber, that engine should be making 622 hp and still run on pump gas. And knowing how BMW and Mercedes do large engines, I'd expect it to only have more than that: A 5.5 Liter V12 from Mercedes without forced induction makes 510 hp, or 92hp per liter, on pump gas. Increase that to 8.3 Liters and Mercedes could make that engine with 763.6 hp.
The point is that Germans are making as much power with the same if not better rev-lines then American makes with less displacement, and less weight. For a fact the new M3 has better power-to-weight ratios than an LS1: even if your numbers of 450lbs were correct (I think they are lowballed by at least 50 pounds) (note that an LS1 is not the 427 engine I have been talking about), BMW makes more hp than the old LS1 did on only 4 liters, and we know that the M3 is a fast car with power in plenty of places. Its torque is a little low, but then again it comes in at low RPMs, and once you are in the top end horsepower carries more weight than torque.
All you have is one, one single 4.6L V8 from Ford that is built exactly like European and Japanese Car Makers build them: with Dual-Overhead-Cams. And you are lauding its capabilities left and right. Hmmm, and criticizing the Euro makers out there. Might notice too that a stock 4.8L BMW V8 had a lower compression ratio than the Cobra did (with both cars stock).
So your being hypocritical here.
Posted by Allen | October 3, 2007 6:50 PM
Posted on October 3, 2007 18:50
No, you're getting laughed at right now. It is inconsequential whether or not an engine uses push rods or overhead cams, or whether it has 2 valves or 5 valves per cylinder. What matters is air flow, period, and it doesn't matter how you get it.
You *do* realize that the advantage of greater valve area that DOHC allows is only really useful on a smaller engine when comparing it to a bigger engine, right?
With a larger bore that allows for larger valves, you can flow just as much through a single larger valve in a 427 as you can with two smaller ones in a 281. And of course you could also have DOHC on the larger bore engine and flow yet MORE air still, but you aren't advocating that. DOHC does not have any inherent advantage unless the two engines are of equal bore and face the same valve size restrictions. But since we are comparing small displacement OHC engines with large displacement OHV engines, OHC has no inherent advantage other than to not lose airflow compared to the larger engine.
There is nothing inherently better about OHC vs OHV; the advantage of OHC just happens to be better suited when cylinder bore is limited in size. I'd love to see DOHC 4V on a big block with a 4.5" bore, but until that happens, DOHC is only useful in the real world to get as much valve area as possible in the small bores of tiny engines. You say "what if BMW used 7.0" well they don't. I could also say "what if the LS7 had DOHC" then what? You'd be comparing a 7.0L DOHC to a 4.8L DOHC and BMW wouldn't stand a chance. BMW could make even more power with a bigger engine, and GM could make more power with their already big engine with more valve area. And the point?
So you guys talk about aluminum and 'advanced composites' and stuff all the time, now you are trying to say that European engines don't have all that stuff? So what kind of low density iron and aluminum are they digging up over there that we don't have on our periodic table over here? *rolls eyes*
Side note on the '03 Cobra 4.6L, those engines have made upwards of 1400-1600 HP with the VT324 and MMR325 stroker engines with the ballpark of around 21 lbs boost, which is 91-93 octane friendly on turbo, so 1200 HP is a fair number to aim for a street car not quite tuned to that level. The stock displacement sock engine is putting out 850 RWHP with 18-21 lbs boost on 91 octane, so figure what another liter of displacement and some head work would do.
I have nothing against other cars or OHC vs OHV, etc.
I'm just tired of all the bias and all the people that believe all the marketing they here while knowing nothing about physics or cars.
If you had twice the displacement but still got the same power, same or better gas mileage, at a lower RPM, why does it matter? How is one better than the other just because its smaller? I don't get how "my engine is smaller than yours" is bragging rights because the larger displacement engine will always have the greater potential when built the same way.
I happen to prefer DOHC, hence I have the Cobra and not something else. Doesn't mean I wouldn't like more displacement as well, and it doesn't mean one is better than the other. In theory DOHC has an advantage all else held constant, but until Ford and BMW builds their DOHC engines with 7.0L or until GM builds their 7.0L engines with DOHC, that theoretical advantage doesn't mean much.
I chuckle that you guys think "DOHC" is some advanced exotic technology, btw.
Posted by Chris | October 3, 2007 7:19 PM
Posted on October 3, 2007 19:19
Oh yeah...
That "only 400 HP LSx with 6.0L" responds very well to bolt on performance improvements. Better heads, cams, etc, can get them to 500 HP territory N/A.
The BMW just has those bolt ons factory installed and you pay more for it.
The only reason you see "big engines making weak power" is that a lot of simple things are left on the table to cut costs and keep prices down.
Can you get 100 HP out of your BMW for $1500 in after market parts? I seriously doubt it, because that "extra" power was already wrung out of it from the "highly tuned" factory setup.
I do agree with much of what you said, such as the examples you gave with built engines making little power. A properly built and blown race gas 5.7L should be putting out in excess of 1500 HP, not 800.
Posted by Chris | October 3, 2007 7:28 PM
Posted on October 3, 2007 19:28
If this doesn't get the point across that I have been trying to make for several weeks now to the Euro snobs that frequent TTR, then you guys are just a lost cause and are in the pockets of BMW's marketing department and read too many magazines.
Aero Ultimate TT, now the fastest "production car" in the world, all American made. But it's a race car, not a luxury car that is also fast, like the Veyron, so I wont compare the cars, just the engines, since you guys like to talk about HP/L.
Veyron:
8 liters, 16 cylinders, 4 turbos, overhead cam, 1000 HP
Aero TT:
6 liters, 8 cylinders, 2 turbos, push rods, 1200 HP
(Yes the TT runs on 93 octane)
Ask yourself how that can be, and then slap yourself in the back of the head for missing that very point that I've been trying to burn into your little brains since day one of posting on this site.
My guess is your reply will start out with something like "well the Veyron is detuned and not putting out it's full potential..."
You mean kind of like our mass market large displacement Ford, Dodge, and GM engines that don't seem to make quite the power they should be? Nah... couldn't be...
/handtoforehead
Posted by Chris | October 3, 2007 8:13 PM
Posted on October 3, 2007 20:13
"Murcielago 6.5L V12 640HP@8000 RPM and 478TQ@6000 RPM...
I make more than that at 2000 RPM with only 4.6L, why does Lamborghini need 6.5L huh?"
Easy - you admitted that you put a turbo on your car. I've seen turbo Lambo's (very rare...a guy named Heffner in Florida will build one for you though) and they'd leave your car in the dust. Now, you tried making an excuse of "oh all these modifications were left off at the factory" - that's crap and you know it. If they were supposed to be there then at the very least it would be an expensive option to have all that stuff dropped in at the factory. Secondly, lets say your claim is true - that still doesn't account for you adding a turbo. Plus, you fail (as you have every time) to take into account that cars like the Lambo and M3 have very broad power curves - so they have 85% of max torque very low, even if they have to rev higher than your engine to hit max torque.
Posted by Remy LeBeau | October 3, 2007 10:36 PM
Posted on October 3, 2007 22:36
Look at you dodge the point yet again.
It's ok to blast American cars if they use big engines when someone else can make a smaller engine that is 'more efficient' ...
But when I tip the scales and I bring up such an American engine and compare it to a larger euro-peon engine that makes less power you say "oh well add turbos to a lambo", so typical. I didn't ask you about adding turbos to a Lambo, I asked you why a Lambo has a huge 6.5L engine and only makes 640 HP when there are 4.6L Ford engines making that or more, hmm?
And what do you mean "supposed to be there", only BMW, VW, etc are allowed to build cars with turb