Anyone have any guesses on engine options at this time?

Are we likely to see the 362 horse version at first release with a 400 or 400+ horse LS2 coming in 2009 as a GXP? Will the LS3 be ready by that time? Any thoughts? Frankly starting point for me is 400 HP due to the weight of the G8. What do you all think? :D

its not going to be an ls2

IIRC the G8 maybe lighter then the GTO. The commodore is lighter then the Monaro.

I keep hearing a rumor about an L98 code engine. Similar to L76 but without the parts for Active Fuel Management.

it'd be pimp if they came out with a special edition ls7 version

it'd be pimp if they came out with a special edition ls7 version

Maybe the GXP version? Another year & a half away. :gr_jest:

I keep hearing a rumor about an L98 code engine. Similar to L76 but without the parts for Active Fuel Management.
I've seen that L98 code too. I haven't seen a definite answer on what exactly it is.

I've seen that L98 code too. I haven't seen a definite answer on what exactly it is.

There have been people from Oz that say that's the code for the 6.0L non-AFM version. The L76 is the version with AFM. Makes no difference to me. I once read where GM brass said that AFM wouldn't be on performance cars like the Corvette. So, here's to hoping that it doesn't show up here.

There have been people from Oz that say that's the code for the 6.0L non-AFM version. The L76 is the version with AFM. Makes no difference to me. I once read where GM brass said that AFM wouldn't be on performance cars like the Corvette. So, here's to hoping that it doesn't show up here.
I don't have a problem with AFM on the lower end cars but the top dog shouldn't have it IMO.

i've been hearing rumors of something w. like 425 - 430 ponies....hopefully thats what they have in the SS version...or whatever they call it...i think an LS2 is unlikely tho

IIRC the G8 maybe lighter then the GTO. The commodore is lighter then the Monaro.

The VE sedan is by evolution a little heavier than the VT-VZ Commodore sedan.

I don't have figures for the kerb weight of a Monaro but it is possible to believe the VE sedan will be comparable in kerb weight of a superseded monaro.

Mike

3730lbs for the old Monaro/GTO
VESS is 3970. Mind you, its a worthwhile pay off for the dynamic gain (apparently).

3730lbs for the old Monaro/GTO
VESS is 3970. Mind you, its a worthwhile pay off for the dynamic gain (apparently).

240 lbs. difference. My butt dyno won't feel that. Especially when I'm beating up on imports. :D

This is what's currently available for the Series I VE Commodore.
Engines
V6
* 3.6 L 180 kW: Alloytec
* 3.6 L 175 kW: Alloytec LPG/Propane
* 3.6 L 195 kW: Alloytec 195

V8
* 6.0 L 270 kW: Gen IV L98

Transmissions

6-speed Manual

* Aisin AY6 (V6 only)
* Tremec T56 (V8 only)

4-speed Automatic

* GM 4L60E (180 kW V6 only)

5-speed Automatic

* GM 5L40E (195 kW V6 only)

6-speed Automatic

* GM 6L80E (V8 only)

Rumour is that the Series II VE Commodore will come out with:

6 Sp Auto for the V6. Similar gearbox to the 6L80E. Can't remember the code.

Direct Injection V6 Engines. 15% Increase in power.

TT V6 Diesel from VM Motori - Most likely this one http://www.vmmotori.it/en/01/00/01/dettaglio.jsp?id=9

Torque monster :D

I have no problems with AFM. I think it would show some responsibility on GMs part to add it as an OPTION. So those who want the performance and the mileage can get it. As long as the motor still gives us at least 400HP what is the problem?

I have no problems with AFM. I think it would show some responsibility on GMs part to add it as an OPTION. So those who want the performance and the mileage can get it. As long as the motor still gives us at least 400HP what is the problem?

No problem here. Saving money on gas may be a good thing. As long as it is seamless and with full power when the pedal is mashed.

LS7 and "GXP" don't belong together in the same car... Ever.

It would really kick ass if they marketed the G8 with a turbo diesel option actually, twin turbo Diesel V6 especially.

I don't care as long as it starts at 400hp and we can add to that. Aftermarket suspension and few other add-ons and I feel this will be a top shelf car.

I see many pissed off Euro-snobs in the future.

I don't care as long as it starts at 400hp and we can add to that. Aftermarket suspension and few other add-ons and I feel this will be a top shelf car.

I see many pissed off Euro-snobs in the future.

http://www.roadandtrack.com/article.asp?section_id=15&article_id=4734

I'm pissed off....we only get the Ausie 6.0l 362hp L98 engine, not the 400hp LS2.

DAMN IT!

So going by the weight and HP/TQ numbers one could expect to see mid-low 14s!

It better be faster than that or I will not get one!

362hp is not bad for a GT trim as long as there is a GXP coming. If not then I'll pass.

Even with 'just' 362hp, it should be able to rip off a high 13. That's not bad for a grocery getter.

So going by the weight and HP/TQ numbers one could expect to see mid-low 14s!

It better be faster than that or I will not get one!

weight was posted as 3995lbs for v8 model

heavier than even the goats :(

Even with 'just' 362hp, it should be able to rip off a high 13. That's not bad for a grocery getter.

THe 2004 GTOs with 350/365 and weighing 250 less where in the high 13s. Mid 13s on the 6-speed. It is going to take more than that 12 HP to overcome the weight difference.

But I hope I am wrong.

weight was posted as 3995lbs for v8 model

heavier than even the goats :(

My 2004 GTO A4 wieghed in at 3650 and I bested a 13.75. So maybe just maybe this thing will hit a high 13. I guess it will come down to the rear ratio.

My 2004 GTO A4 wieghed in at 3650 and I bested a 13.75. So maybe just maybe this thing will hit a high 13. I guess it will come down to the rear ratio.

I agree - it should be good for high 13s or low low low 14s right out of the box. Add on a couple bolt-ons and it'll be deep into the 13s relatively stock.

Pretty damn good for a $30k sedan.

add a blower, nitrous and cam etc and run 10's in the family sedan and 9's in the goat
hehe

Still, a 6.0L V8 and only 360ish bhp... that translates to about 320-330ish rwhp. I don't know, I can see that as being a high 13, low 14 sec car at best, granted minimal to no wheelspin.

I thought they'd the the LS2 on GXP (I hope).

I agree - it should be good for high 13s or low low low 14s right out of the box. Add on a couple bolt-ons and it'll be deep into the 13s relatively stock.

Pretty damn good for a $30k sedan.

Take the wife & kids for an exciting blast down the quarter mile. Hahahaha.

I still say a lot is going to come down to 2 basic things...

1. Tranny (4 speed auto, 6 speed auto or 6 speed manual) The 6-speed auto and manual will be good but if it is a A$ it is doomed.
2. Gear ratio (3.42 will not help the 1/4 mile at all but the MPG will look good)

Take the wife & kids for an exciting blast down the quarter mile. Hahahaha.

I can do this now in my TBSS - so I hope to hell the G8 GXP is faster than the TBSS!

I can do this now in my TBSS - so I hope to hell the G8 GXP is faster than the TBSS!

It should be. The TBSS weighs in at over 4000 lbs. I don't see why GM would roll back the horsepower on us now.

I would never have thought about putting a diesel in a car like this. It definately sounds good with the torque. Any numbers? Or is this a theoretical engine?

Guys! Listen Up!

Not sure why you guys are complaining about the L98.

The quickest time recorded by a VE SS Commodore was 13.4 sec quarter mile. Stock Standard! You should be able to do high 13's all day long.

The diesel would have the following specs:

184 kW/247hp @ 4000 rpm
500 Nm/369lbf·ft @ 1800 rpm (You just gotta love that)

It's hasn't been 100% confirmed but Holden will bring one out if Sales don't go to well. (Petrol Prices) They stated they would look to VM Motori for the Diesel engine.
http://www.vmmotori.it/en/01/00/01/dettaglio.jsp?id=9

I hate doing conversions. :(



Awesome tq, BTW.

Guys! Listen Up!

Not sure why you guys are complaining about the L98.

The quickest time recorded by a VE SS Commodore was 13.4 sec quarter mile. Stock Standard! You should be able to do high 13's all day long.


Sweet!


The diesel would have the following specs:

184 kW/247hp @ 4000 rpm
500 Nm/369lbf·ft @ 1800 rpm (You just gotta love that)

It's hasn't been 100% confirmed but Holden will bring one out if Sales don't go to well. (Petrol Prices) They stated they would look to VM Motori for the Diesel engine.
http://www.vmmotori.it/en/01/00/01/dettaglio.jsp?id=9

That's some good looking torque!

Going by what i've seen VE's do if you do 14sec quarter you cant drive it properly..

i wanna see a 400 horse number w/ this car
i think GM would be stupid to put in less

Charger is either 350 or 425...why would they go less?

a6 will be awesome

I drove an A5 in a CTS, and that felt great. I'd love to drive the A6 in this car. However, if I bought one of these for myself, I'd def go for the M6.

Car & Driver is reporting the G8's V8 will have cylinder deactivation.

http://www.caranddriver.com/autoshows/12462/2008-pontiac-g8.html

If this is true it will be the first really bad thing I've heard about this car. Cylinder deactivation really ruins the throttle response. It's true of Chrysler's HEMIs, and true of GM's new truck V8s. It also doesn't reduce fuel consumption at all, it just makes it easier to market V8s to a fuel-conscious market. Hopefully a tune will defeat it.

Thanks Tri for the C and D link. I hope they are wrong about the production model being toned down. I liked the stitching on the dash and low ride.
....and I was hoping for 100+ mph in the quarter. It might be tough!!!

Hope I'm wrong.........

Hmm, good discussion so far.

Follow up question, does anyone know what rear gearing is in the Commodore SS-V? I would assume the G8 will get the same but of course it hasn't been noted yet.

I'll check at Holden but if anyone knows please post it. :)

Car & Driver is reporting the G8's V8 will have cylinder deactivation.

http://www.caranddriver.com/autoshows/12462/2008-pontiac-g8.html

If this is true it will be the first really bad thing I've heard about this car. Cylinder deactivation really ruins the throttle response. It's true of Chrysler's HEMIs, and true of GM's new truck V8s. It also doesn't reduce fuel consumption at all, it just makes it easier to market V8s to a fuel-conscious market. Hopefully a tune will defeat it.

Well the Commodore DOD (is that the deactiviation thing) mechanics but not active...

that would be bad

Well I looked it up at Holden's website.

3.45 ratio for the 6 speed Manual
2.92 ratio for the 6 speed Automatic. OUCH!!!

Granted the auto does have a lower 1st gear than the manual.

I've heard a 13.4 quarter time thrown around for the SS-V. Anyone know if it's the auto or manual?

Afm Ftmfl!

This engine ought to be fine with me... it's an upgrade from what I've got, after all.

Would like to know more about the V6 option, though.

Well I looked it up at Holden's website.

3.45 ratio for the 6 speed Manual
2.92 ratio for the 6 speed Automatic. OUCH!!!

Granted the auto does have a lower 1st gear than the manual.

I've heard a 13.4 quarter time thrown around for the SS-V. Anyone know if it's the auto or manual?
Have that test in front of me. Its the auto, which has tested at 0.1 secs faster than the manual. Btw the WM Caprice V8 which is the luxury LWB version and @ 1890kg is Holden's heaviest model also gets into the 13s, it does a 13.9

I like this engine. I bet it's got alot of torque down low.

I still don't understand why people are complaining that it doesn't have 400hp. The thing is a weapon for it's size and weight...

The L76 Block

Iron or Aluminum????? :confused:

I really wouldnt be worried. It sounds like this could be a case of the "305" HP LS1 Z28s.

It sounds like they put the badass heads on the LS2 shortblock, with a stump puller cam in it, which is great for putting around in a 3.27 rear car with a .57 OD and 4000 lbs to lug around.


These heads/intake are much better than the LS2, so when a proper cam is added, here are the results

Hi guys!

Stock LS2 shortblock, mildly touched up L92s, Untouched L76, G6x92-3 L92 specific cam kit and the LG Pro Longtube headers for an astounding 484/455 SAE rwhp on a dynojet!

We are up late tuning and working on these packages for you guys, so stay tuned! I will upload the graphs later on tonight or tomorrow morning.

Thanks

Louis



He even said that was a mild cam. So cam only, these cars should be making ~440 rwhp, so there will be a huge jump from the "362" number

Here are the ratios for you.

The L76 Block

Iron or Aluminum????? :confused:

Cast Aluminum for both engines with cast in place iron liners, aluminum heads.

The V6 (LY7) has coils on the plugs like an Ecotec, the V8 has coils near the plugs but not on them.

Cast Aluminum for both engines with cast in place iron liners, aluminum heads.

Thanx!!!!! :D

Thanx!!!!! :D

Al engines combined with battery in trunk (among other things) achieves near 50/50 weight distribution.

Well I looked it up at Holden's website.

3.45 ratio for the 6 speed Manual
2.92 ratio for the 6 speed Automatic. OUCH!!!

Granted the auto does have a lower 1st gear than the manual.

I've heard a 13.4 quarter time thrown around for the SS-V. Anyone know if it's the auto or manual?


I find that very optimistic. I would expect the GT model to run high 13s on average with a decent driver.
One of my mags says under 5.9 sec 0-60 mph and under 14.0 in the 1/4 mile, which mean 5.8 sec or so to 60 and high 13s in the 1/4 mile.

And don't forget, the LS2 GTO is supposed to run 13.0 @ 108 mph according to GM.

Al engines combined with battery in trunk (among other things) achieves near 50/50 weight distribution.

Battery in the trunk? GM is turning their cars into BMWs more & more every day. At least the gas tank isn't in the trunk. :D

Why is everyone ignoring the TQ figure. 391!
Thats only 9 off the LS2 and it probably comes in lower on the powerband.
remember this is just the GT. If sales pans out then GM would have a business case for adding more models.
Its about a price point. GM needs to see 33k G8 GTs being sold before it can introduce a 450hp+ near 40k version.

Agreed on the torque! SOTP driving with this car should be fun! Swap in a good cam/tune and it sounds like 400+whp is cake. Combine that with a 3.91 gear (which should be VERY streetable considering the taller tires this car has vs. the GTO) and you would have an insanely fun car. Or do what I plan on doing...leave all that crap alone and get twin turbos. 11's all day long. :)

I still say a lot is going to come down to 2 basic things...

1. Tranny (4 speed auto, 6 speed auto or 6 speed manual) The 6-speed auto and manual will be good but if it is a A$ it is doomed.
2. Gear ratio (3.42 will not help the 1/4 mile at all but the MPG will look good)


The G8 6 speed will have a 3.27 rear end gear ratio. The gearing in the tranny is the same as the 6 speed gto EXCEPT for first gear. The first gear in the G8 is rated at 3.01, ours is 2.9 something I believe.

The G8 6 speed will have a 3.27 rear end gear ratio. The gearing in the tranny is the same as the 6 speed gto EXCEPT for first gear. The first gear in the G8 is rated at 3.01, ours is 2.9 something I believe.

GTO is 2.97:1 but the G8 is 3.01:1. With the same gearing, its only a 0.6 MPH difference at 6200 rpm.

(Holden has the diff at a 3.45:1 for the M6, but Ive heard 3.27 for the US M6 car)

So top speed in 1st gear (6200 rpm), accommodated for tire size

GTO M6 3.46 46.1
G8 M6 3.27 49.6


so its a bit taller

Why would they consider using AFM on a pushrod motor that gets gas mileage that's already in the high 20s? With an intake and exhaust free-up, I'm pushing 28-29 mpg in the goat (when I'm driving it nice).

In the not-too-distant future, government regulators will try to force the extinction of V8 powered cars as too powerful and too wasteful. Enjoy this while you can.

In the not-too-distant future, government regulators will try to force the extinction of V8 powered cars as too powerful and too wasteful. Enjoy this while you can.

Yeah, I think you are right. Just yesterday, the auto industry leaders met with a House subcommitee trying to divert future regulations for fuel and emission reductions. The Congress wants to hit 'em hard.

We may only have a window of a few more years to have V8 fun.

I hope we are not beginning to see a repeat of 1970. If it is, then probably to get the power back, the auto industry would have to resort to battery assist acceleration like the Toyota FT-HS concept (essentially a Volt with a V6). Toyo may be anticipating this very scenario. Would suck to have the Camaro out in 2009 only to have sweeping regulatory changes force GM to scale back. AFM might not be enough and GM can't really rely on Japanese battery tech because those companies are too closely tied with home team automakers. They will have to stick with Chevron NiMH and hope for the best. If the worst happens, hopefully this time it won't take 15 years to recover.

GM can't really rely on Japanese battery tech because those companies are too closely tied with home team automakers.

If our politicians had any balls they could force Toyota to play fair on technology issues or face excise tax hikes. Won't happen though....

They will never get rid of the V-8, at least I hope not.

I don't think we have much to worry about in terms of the V8's future - Americans love their horsepower, and rear drive. Look at how much demand there is/was for high-powered rear drive sedans and sports cars. Particularly the Charger/300C, and the Zeta platform forthcoming

I don't think we have much to worry about in terms of the V8's future - Americans love their horsepower, and rear drive. Look at how much demand there is/was for high-powered rear drive sedans and sports cars. Particularly the Charger/300C, and the Zeta platform forthcoming

Apparently, Americans love FWD and 4-cylinders even more than RWD V8s, because the sales numbers prove it.

We will never again see the days of $2 gas, so V8s will become even more of a luxury. If we're lucky and don't have any natural or political disasters over the next year, gas might be $4 national average for regular unleaded this time next summer. By the end of the G8's first generation, gas will probably be $5 or $6 a gallon, at which point traditional V8s will become a hard, hard sell. And I don't think GM intends for the G8 to become a niche product, even when it is equipped with the 6.0L. Having said that...even though it's overkill for my needs (or anyone's, really) I desperately want a G8 with the V8.

Apparently, Americans love FWD and 4-cylinders even more than RWD V8s, because the sales numbers prove it.

We will never again see the days of $2 gas, so V8s will become even more of a luxury. If we're lucky and don't have any natural or political disasters over the next year, gas might be $4 national average for regular unleaded this time next summer. By the end of the G8's first generation, gas will probably be $5 or $6 a gallon, at which point traditional V8s will become a hard, hard sell. And I don't think GM intends for the G8 to become a niche product, even when it is equipped with the 6.0L. Having said that...even though it's overkill for my needs (or anyone's, really) I desperately want a G8 with the V8.

5 or 6 dollars a gallon by the end of the first gen? :rolleyes: I think that's a bit of a stretch.

And I think the sales numbers prove that people still do love their horsepower, regardless of gas prices. Full size truck/SUV sales havn't waned too much, a lot of people still opt for up-level engines in their cars, even if they aren't V8s. If you're insinuating that Toyota is doing so well based on their 4-cylinder cars alone......

Toyota/Lexus sell trucks/suvs/GS-type vehicles as well as their smaller cars, all of which are still selling decently. Like I said, the 300/Charger are still selling really well, the CTS has sold well since it debuted, there's a lot of excitement for the G8/Camaro, so I think there are more than enough people to warrant good sales from higher performance, RWD cars.

5 or 6 dollars a gallon by the end of the first gen? :rolleyes: I think that's a bit of a stretch.

And I think the sales numbers prove that people still do love their horsepower, regardless of gas prices. Full size truck/SUV sales havn't waned too much, a lot of people still opt for up-level engines in their cars, even if they aren't V8s. If you're insinuating that Toyota is doing so well based on their 4-cylinder cars alone......

Toyota/Lexus sell trucks/suvs/GS-type vehicles as well as their smaller cars, all of which are still selling decently. Like I said, the 300/Charger are still selling really well, the CTS has sold well since it debuted, there's a lot of excitement for the G8/Camaro, so I think there are more than enough people to warrant good sales from higher performance, RWD cars.

Umm, how much were we paying for gas 5 years ago? It wasn't near $3.50/gal. You're deluding yourself if you don't think that $5/gal gas is a real possibility by 2013.

Look at Toyota's numbers, or the numbers of any top-selling car (like the Civic, Accord, Camry, Corolla...). "Many" customers DO opt for larger engines in the Camry and Accord, but the OVERWHELMING MAJORITY of those cars are sold with 4-cylinder engines and automatic transmissions. Compare the sales numbers of the Hemi 300/Charger variants to the Camry. They're similar in terms of size and the 300/Charger do in fact have a noticeable performance advantage but the sales numbers aren't even close.

Yes, the G8 should sell relatively well. The key world is relatively (compared to other performance-orientented RWD sedans in the same price range). I don't think anyone would argue otherwise. But there is a CLEAR preference in America for FWD, 4-cylinder cars. The G8 isn't going to change that. Which is fine with me, it just makes the car a bit more special and exclusive. :)

Ah, I see now.

We're on different pages. $5 by 2013 I can see, but not by 2010, when the next gen G8's will be here.

Although, once we get closer to $5/gallon, I think we'll start to see a lot more E85, which I would like to think can be had for less then 5/gal

Ah, I see now.

We're on different pages. $5 by 2013 I can see, but not by 2010, when the next gen G8's will be here.

Although, once we get closer to $5/gallon, I think we'll start to see a lot more E85, which I would like to think can be had for less then 5/gal

Oh ok. I must say that I am not a fan of E85. If/when gas hits $5/gal, I think a lot of people will be looking to diesel instead.

But that's neither here nor there right now.

So the G8 is moving to an updated Zeta platform due to crash regs? Is that for the 2010 model year or 2011 model year?

Either way, I want an Aussie-built G8 as it is now. So I may have to move the purchase up to early 2009 and maybe sacrifice the V8 and go with the V6 (which is still a decent motor). I just graduated from college, so hopefully I'm going to find a job soon and live with my parents to save every nickle and dime. Hopefully this plan will pay off in the form a G8 two years from now. Desperate times call for desperate measures. :gr_devil: :stormtrooper: :aus_flag:

Oh ok. I must say that I am not a fan of E85. If/when gas hits $5/gal, I think a lot of people will be looking to diesel instead.

But that's neither here nor there right now.

So the G8 is moving to an updated Zeta platform due to crash regs? Is that for the 2010 model year or 2011 model year?

Either way, I want an Aussie-built G8 as it is now. So I may have to move the purchase up to early 2009 and maybe sacrifice the V8 and go with the V6 (which is still a decent motor). I just graduated from college, so hopefully I'm going to find a job soon and live with my parents to save every nickle and dime. Hopefully this plan will pay off in the form a G8 two years from now. Desperate times call for desperate measures. :gr_devil: :stormtrooper: :aus_flag:

Holden-
When gas hits $5, dont you think deisel will be around the same? Besides, emission regs will be insane for deisel by that time. I think I heard all deisel will contain 40% biodesel by that time. If thats the case, every car man. will have to remake every deisel motor. It a big cluster fook all the way around. E85 still sucks to.

Holden-
When gas hits $5, dont you think deisel will be around the same? Besides, emission regs will be insane for deisel by that time. I think I heard all deisel will contain 40% biodesel by that time. If thats the case, every car man. will have to remake every deisel motor. It a big cluster fook all the way around. E85 still sucks to.

Contrary to the degradation of mpg with E85, diesel powerplants could care less what is in the fuel mix (to a point), and generally improve on bio. They have been proven to run in off-road situations on 100% soy or corn oil. Presently both John Deere and Kubota approve B5 biodiesel, an industry benchmark of 5% bio. The issues of compatability with seal expansion rates is similar to what happened when sulphur was first majorly regulated in on-road diesel a dozen years ago. Current production diesels should need nothing more. The addition of 40% bio will produce a much cleaner exhaust and if widely adopted could negate the need for the urea injection systems currently planned. This could actually save money per vehicle.

Holden-
When gas hits $5, dont you think deisel will be around the same? Besides, emission regs will be insane for deisel by that time. I think I heard all deisel will contain 40% biodesel by that time. If thats the case, every car man. will have to remake every deisel motor. It a big cluster fook all the way around. E85 still sucks to.

Yes, diesel will get more expensive too, but people will be getting more miles out of a gallon of diesel than they would out of a gallon of gasoline. Biodiesel shouldn't be a problem, manufacturers might have to modify "support infrastructure" (like gas tanks and fuel lines to resist "corrsion" associated with some biofuels) but not the engines themselves. In fact, it would be great if we could have widely-available biodiesel that was grown right here in the USA.

But this is probably irrelevant to the G8. I guess I wouldn't even be considering one if I were truly worried about gas prices. Hell, I'd even take an Impala SS at this point! :secret:

EDIT: Also, I think the urea injection diesels (BluTec, et. al.) are truly stupid.

To those complaining about the 362HP power rating, understand it does this with regular 87, not 93 premium.

To those complaining about the 362HP power rating, understand it does this with regular 87, not 93 premium.


You're not gonna gain that much horsepower from 87 to 93.

You're not gonna gain that much horsepower from 87 to 93.
I believe the point he was making was that that you'll save 25 cents per gallon while still getting 362 HP. ;)

I have an LS1 and I hate having to buy Premium.

I believe the point he was making was that that you'll save 25 cents per gallon while still getting 362 HP. ;)

I have an LS1 and I hate having to buy Premium.

you're right I only read the last post.

With your Ls1's compression ratio you should be fine running 89 aslong as you aren't beating it to death. I wouldn't dare run anything below 93 in any forced induction car.

you're right I only read the last post.

With your Ls1's compression ratio you should be fine running 89 aslong as you aren't beating it to death. I wouldn't dare run anything below 93 in any forced induction car.
My compression is around 11:1...not stock. ;) :gears:

My compression is around 11:1...not stock. ;) :gears:

You want to compare effective compression ratio's? mine's a little over 19:1.

BOOST :ftw: