I was reding the g6 wil get a 6 speed sutomatic tranny?

The 2007 GTP model. Along with 3.6L DOHC

The 2007 GTP model. Along with 3.6L DOHC

so the 07 gtp will have 6 speed auto and a double overhead 3.6? at 252 hp i tink----maybe worth a trade of my 06 gtp-

I wouldn't trade my ride, because I enjoy the 6 MT too much. :)

I'd trade mine if I could for a reasonable amount. But that won't happen so I'm stuck with it.

I'm not so sure it will be as torquey as the 3.9.

I'm not so sure it will be as torquey as the 3.9.Maybe not, but the gearing allows for a quick launch. I heard that it does 0-60 in 6.3 seconds. This would make it faster to 60 than the 6 MT. ;)

It's about time. I love how my Grand AM and G6 drive but they seriously need better transmissions. In the Grand Am my car would always be jumping up and down in gears because the speed limit on my drive to work is 40MPH. The G6 is a little better about it but I bet acceleration would be a heck of a lot better with a 5 or 6 speed automatic transmission.

Any chance the Grand Prix's will be getting the 5 or 6 speed automatic treatment? And the GTO? The GTO deserves better!

I want to get a 2007 Grand Prix for my next car but if I have to wait till 2008 or 2009 models roll out I will if it means I'll get different transmission.

And are any Pontiacs gonna see the CVT?

I'm not sure I see the logic in having the 3.9L on the GTP for 1 year, then upping to a 3.6L DOHC w/only 11 more horseys for 07. I know the 3.9L will continue on in th GT and convert, but it just sems like a lot of trouble for very little gain. And I doubt a 6sp manumatic with the 3.6L would be that much quicker 0-60 since the 3.9L manumatic can hold a gear up to redline, requiring only 1 shift on the way to 60. No shift at all if you're naughty... Hopefully the 6sp auto will be a manumatic with the same characteristic of holding a gear up to/past redline.

Any chance the Grand Prix's will be getting the 5 or 6 speed automatic treatment? And the GTO? The GTO deserves better!

I want to get a 2007 Grand Prix for my next car but if I have to wait till 2008 or 2009 models roll out I will if it means I'll get different transmission.

And are any Pontiacs gonna see the CVT?
I'm pretty sure the GP will end it's life cycle with a 4 speed.
The GTO will probably get a 6 speed auto when it gets a full model redesign.
GM doesn't have any CVT's in it's lineup now so I doubt we'll be seeing any soon.

It's interesting that one member talks about the four speed manumatic being able to hold past the redline because I have a 6 speed manual and it is annoying to say the least that when merging or passing, unless one watches the tack instead of the road, when the 6000 rev point is reached, WHAM! The motor dies and one is left in a dangerous situation that even shifting back down won't cure; such is the kill switch action, that the revs are now too low. The car just dies. Great fun if there is a car behind or approaching!
It's interesting that just as peak power is being reached, the limit is reached also. Why couldn't Pontiac/GM have raised the limit just a bit to give one a chance to make a shift before the engine dies?
GTPdriver

I'm not sure I see the logic in having the 3.9L on the GTP for 1 year, then upping to a 3.6L DOHC w/only 11 more horseys for 07. I know the 3.9L will continue on in th GT and convert, but it just sems like a lot of trouble for very little gain. And I doubt a 6sp manumatic with the 3.6L would be that much quicker 0-60 since the 3.9L manumatic can hold a gear up to redline, requiring only 1 shift on the way to 60. No shift at all if you're naughty... Hopefully the 6sp auto will be a manumatic with the same characteristic of holding a gear up to/past redline.


6000 RPM is the perfect shift point for the 3900.
The number of shifts between 0-60 really doesn’t have that much relevance the benefit of the 6 speed auto comes with the gearing, a 6 speed would allow for shorter gears, a shorter first gear in particular will allow you to get out of the hole quicker like Kman said.

And GTPDRIVER The problem you are talking about is not with the fuel cut its with that fact that the tach does not keep up with the engine everyone I've let drive my car has said so. It's just a matter of knowing your car better, I rarely look at the tach anymore.

The boatload of torque the 3.9L has is available at a very low 2300-2500 rpm from what I've read. I have no doubt that there will be slight improvement in acceleration 0-60 on the new 3.6 while in auto mode because of the gearing, but when I really want to move out from a standstill, I put the tranny in it's manual mode. I seriously doubt that the DOHC's torque peak is below 3000 rpm (DOHC's are inherently revvier) and the difference in quickness will probably be negligible between the '06 and '07 GTPs. There's just not a big difference between 6.2 sec and 6.5 secs anyway, IMHO. Definiely not a reason to trade an '06 for an '07 GTP. If I were looking to buy right now, I'd wait for the '07. Just a more modern, efficient, lighter package. But I'm not going to slit my wrists just yet or even think about trading in my new '06 until A) the warranty is up or B) the car is significantly upgraded. By the time GM gets around to doing that, something else will have probably captured my imagination...

The boatload of torque the 3.9L has is available at a very low 2300-2500 rpm from what I've read. I have no doubt that there will be slight improvement in acceleration 0-60 on the new 3.6 while in auto mode because of the gearing, but when I really want to move out from a standstill, I put the tranny in it's manual mode. I seriously doubt that the DOHC's torque peak is below 3000 rpm (DOHC's are inherently revvier) and the difference in quickness will probably be negligible between the '06 and '07 GTPs. There's just not a big difference between 6.2 sec and 6.5 secs anyway, IMHO. Definiely not a reason to trade an '06 for an '07 GTP. If I were looking to buy right now, I'd wait for the '07. Just a more modern, efficient, lighter package. But I'm not going to slit my wrists just yet or even think about trading in my new '06 until A) the warranty is up or B) the car is significantly upgraded. By the time GM gets around to doing that, something else will have probably captured my imagination...


I agree with you there, I wont be trading in my car for 12 more HP. Not to mention that fact that I bought my car BECAUSE of the Manual.


And that 3.6 is retarted to work on...

The real collector's item should probably be the GTP with the 6sp manual, not the "Only-a-handful-of-these-were-ever-produced" 2006 GTP verts being sold on eBay, which will be the same car in '07, 3.9L and all, just now called a GT Convertible

I'm wondering where you guys read this stuff?? Seems kins of goofy to do a lot of changes to a car that's biting the dust after 07

That's because the car ISN'T biting the dust after 07. I don't care what you friend who works for GM says.

According to whom? The brand manager says it's getting nixed. That seems to be a pretty strong case. There are no sketches for it in the design studio after a late '07 release, which of course will be released a 2008 model. If there are no sketches, there is NO car. Mike Gilliam who has been on the epsilon design tables for the last 4 years sees Lutz about every 3 days. I tend to trust his judgement. He's yet to feed me any false info.

Not certain I believe you but in any event good sales figures have a way of changing the future. Based on what I've heard and speculating a little we already know the G6 interior will likely be improved - presumably for 08 model year - and if the Epsilon II platform supplies a G6 replacement (whatever it may be called) the 09 model year would make sense for that. Looks to me like there will be an 08 model year G6 but after that...

my sources at GM say none of you can predict the future. sit back, enjoy the ride, and quit trying to have the most connected friends on the internet.

don't get me wrong, i like checking out the 'inside info', if that is what any of this really is, but the whole 'my friend knows more than your friend' crap is getting real old.

my sources at GM say none of you can predict the future. sit back, enjoy the ride, and quit trying to have the most connected friends on the internet.

don't get me wrong, i like checking out the 'inside info', if that is what any of this really is, but the whole 'my friend knows more than your friend' crap is getting real old.

W E R D ! ! ! ! ! !

From http://en.wikipedia.org/wiki/GM_Epsilon_platform:
Note the reference to G6 below...
Epsilon 2
A new version of the Epsilon, dubbed Epsilon 2, will debut in 2008. It will be adaptable for front and all-wheel drive applications.

Although "crossover SUVs" were planned for the original Epsilon platform, none were produced. Epsilon 2 also has this vehicle type planned, but they are more likely to use the planned Theta Premium architecture.

Opel have reportedly designed a new flagship model based on Epsilon 2 which would succeed the Omega and also be offered by Saturn.

The Epsilon 2 will be used in the following vehicles:

2009 Opel Vectra
2010 Pontiac G6 (The debut of E2 G6 is dependent upon whether a refresh is made for 2007. It may be moved up to 2008 if there isn't one.)
2010 Buick LaCrosse
2010 Cadillac BLS (global)
2010 Saab 9-3
2010 Saab 9-5
2011 Chevrolet Malibu

yeah, but anyone can go in and edit Wiki to say whatever they want. it is great for a starting point for real research, and while the information MAY be accurate, it can't be guaranteed.

I think we're getting a bit off topic here.

I think we're getting a bit off topic here.

so you're still wondering if the G6 will get a 6 speed sutomatic tranny? i'm still on the fence about whether or not the sutomatic will ever make production, but if it does i feel confident that the G6 is a very likely candidate for it.

I think it's gonna be one of the first GM cars to get the 5 or 6 speed automatic treatment. It's one of the better selling GM cars, and when people think G6 they think something sporty. While I'm sure the baseline G6's will always stay with the 4-speed I think it's very likely the GT and GTP's will get the better transmissions.

so you're still wondering if the G6 will get a 6 speed sutomatic tranny? i'm still on the fence about whether or not the sutomatic will ever make production, but if it does i feel confident that the G6 is a very likely candidate for it.

tmurfet,

wikipedia is not exactly the most reputable source. Ask yourself "where do they get their info?" and you might wonder why you are posting something about cars build in 2009 and 2010.

I don't even think that Mr. Wagoner knows what will be produced then.

Look at Porsche. There was one time that the CEO thought that the 911 and 99X platform would go away to make room for the 924 and 933. OOPS!

The article you quoted states that the Epsilon 2 will be "adaptable for front and all-wheel drive applications." What about the Cadi CTS? It's rear wheel already and Pontiac wants to go rear-wheel exclusive over the next 5 years.

Be patient - who knows what the future will bring. Just keep buying North America in hopes that one day we might find a winner.

The boatload of torque the 3.9L has is available at a very low 2300-2500 rpm from what I've read.
...
I seriously doubt that the DOHC's torque peak is below 3000 rpm (DOHC's are inherently revvier) and the difference in quickness will probably be negligible between the '06 and '07 GTPs.

Hmm, just joined here from the GA side 'cause I was bored, LOL.

About the LY7 (3.6L DOHC)... As much as the pushrod ppl (I'm one of them myself, lol) might like the LZ8/LZ9 (3.9L "3900" OHV), the LY7 is quite a nice engine. I'm really glad/excited GM is offering the LY7 in the G6 and Aura for 2007.

The LY7 reaches it's torque peak at just 3200rpm (251lb*ft). It does kinda spike downwards slightly to 4000rpm but it slowly goes up again as it goes towards 5000rpm. The torque peak is not below 3000rpm but it's actually at a lower RPM than the 3900's torque peak.

The LZ8/LZ9 on the other hand reaches it's torque peak at a [relatively] lofty 4600rpm (240lb*ft). That's 11 less lb*ft and 1400rpm later.

Now you might think the 3900 has more low-end torque in general though, right? Not so. :P The LY7 has very similar torque levels as the LZ9. In fact, right from the lowest RPM where torque figures appear on the graphs (looks around 1200 RPM to me), the LY7 is already making just over 200lb*ft of torque. The LZ9 on the other hand is at perhaps only 180lb*ft at that point.

At 1500rpm, the LY7 is making perhaps 210lb*ft while the LZ9 is just breaking into the 200lb*ft level. At 2000rpm they are both making what looks like a similar amount of torque (~220lb*ft). The LY7 however continues more rapidly to it's torque peak (gets there at a lower RPM as discussed above) and it has more torque overall.

The LY7 does take longer to get to it's power peak (252hp @ 6300rpm v. 240hp @ 6000rpm) but looks like it has slightly more power at 6000rpm than the LX9 does anyway.

The only thing the LZ9 appears to enjoy over the LY7 is that the torque curve looks smoother. Oh, and of course, the fact that the LZ9 can be mated to a manual transmission whereas the LY7 is automatic only.

Anyway the proof, if you need it is in these graphs below, both SAE J1349 Certified ;) :
3.6L DOHC LY7
http://media.gm.com/us/powertrain/en/product_services/2007/HPT%20Library/HFV6/2007_36L_LY7_G6.pdf

3.9L "3900" LZ9
http://media.gm.com/us/powertrain/en/product_services/2007/HPT%20Library/HVV6/2007_39L_LZ9_G6.pdf

[Note there is a difference in the torque scale on the side, so be careful when comparing them, you have to take certain RPM points and compare the torque levels, like I did above.]

I'd agree with you that performance of the cars will be quite similar and probably not worth "worrying" about if you have an 06; but make no mistake the LY7 is no slouch. Compared to the 3900 with 300cc more displacement, it's breaking the no-replacement-for-displacement rule if you ask me ;)

Yeah, you're right about an OHC being a more efficient package than an OHV. Wonder what Ferrari could wring out of 3.9L OHV or 3.6L OHC. I guess my personal disappointment with the 3.6L is the fact that that is a huge (relative) amount of displacement and losing only 0.3L in a transition to OHC design it "could have been a contender"- translated: should be light years ahead of the 3.9L numbers-wise, and yet it is awful close to the power output of the older design. I'm sure GM plans to get moe power out of it down the road, though.

Nice post Mantagreen97! :)

I do dispute the torque curve a little bit on the 3900 though. I happen to have my own evidence of it. :D

http://www.authenticgeeks.com/g6performance/d/255-1/Dyno+-+2006-06-25-small.jpg

Now, you'll notice that the torque peak is just around 3250RPM, but 95% of peak torque is available just above 2500RPM even. I'm sure it's even available sooner, but my Dyno sheet here only shows from 2600+. According to GM when I bought the car, 90% of peak torque is available from 1800RPM all the way to redline.

You'll of course notice that my numbers are lower, as this is WHP, rather than crank HP.

Overall, I'd say that BOTH engines are almost equal in terms of what they put out, with the nod going to the 3.6 (LY7) for having slightly more peak power. The LZ9 does have a smoother torque curve though.

edit: You'll want to look at my second run more than the first. My first run finished too soon due to the 115MPH limit on the car, so 4th gear topped out at like 5100RPM. Second run was done in third.

Did the 3900 change from 2006 to 2007? I thought the 3900 torque peak was at 2,800 RPM:

http://www.roadandtrack.com/assets/download/0602_pontiac_data_panel.pdf

But the Pontiac website now says 4,600 RPM.

Everything I've read says 2800 for the 2006. I've not dyno'ed mine, but my ass-meter (never get tired of saying that) confirms this :)

I have an '07 with the 3.9 ('vert) and my "ass-meter" (like saying that too) says it pulls strong from about 1500 all the way to redline it pulls strong. This is one of the smoothes engine/trans combos I've ever driven. It has the 4spd auto mated to the 3.9. From behind the wheel, my meter does not feel any flat spots in the torque curve at all.

I don't know where peak torque is at, but I'd have to say the strongest pulling is from about 2500 up to about 5000.

Jeff