What Mods Are You Guys Going To Do To The 09 V? And Which Mod Will Probably Give The Most Hp?

I Personally Think That A Pully Change, Tune, Exhaust And Headers Is A Must.

Also, Is It Possible To Change The Supercharger On The V To The Same One Used On The Corvette Zr1? Or Is The Lack Of Forged Pistons Going To Present A Problem.

If you change the blower your going to have to change all the internals that GM did too IMO. The titanium rods, exhaust manifold etc were made that way to accept the higher pressure from the LS9. I think they only share 25% of components.

Im sure its gonna get costly to replicate the LS9 engine and there is a reason the price tags are $30K apart.

The mag ride may make suspension mods damn pricey too.

But hey, at least the damn thing is gonna have 5 lug rims!!

From what I've read, a pulley change is not possible, and as far as other mods go, my guess is that there won't be a lot of power to gain by simple means. Yeah, intake & exhaust mods might net you 20hp if you're lucky, and there "might" be a few ponies in a tune but I'm not betting on it. The PCM tune on this puppy will be elaborate and I wouldn't be surprised if there's not a lot of power there either. Will be interesting to see some dyno testing data.
I think the days of free horsepower being found in PCM tunes is long gone, at least compared to a few years ago anyway. Again, it'll be fun to see what tuners come up with, without having to dig into the engine at least.
I have a funny feeling that the biggest performance gains will be found via weight-reduction.

I seem to recall in an article the use of a very mild cam to keep it "civil". A cam swap may end up yielding the best results if this is the case.

I'd be surprised if there's very much weight savings to be had without the removal of alot of the upgrades over the 1st gen V. If you want to go that route, you may be better off doing an engine swap in a 1st gen.

From what I've read, a pulley change is not possible, and as far as other mods go, my guess is that there won't be a lot of power to gain by simple means. Yeah, intake & exhaust mods might net you 20hp if you're lucky, and there "might" be a few ponies in a tune but I'm not betting on it. The PCM tune on this puppy will be elaborate and I wouldn't be surprised if there's not a lot of power there either. Will be interesting to see some dyno testing data.
I think the days of free horsepower being found in PCM tunes is long gone, at least compared to a few years ago anyway. Again, it'll be fun to see what tuners come up with, without having to dig into the engine at least.
I have a funny feeling that the biggest performance gains will be found via weight-reduction.

I find myself agreeing with you quite a bit. I think we've both posted about the weight of this car. My question would be what options are there for shedding pounds?

I've also seen a ton of folks saying a pulley change will most likely be out of the question but I do have more confidence that tuning has some decent potential.

It's possible that a tune may net something, but I'm unsure as to just how much . I mean if a pulley swap WAS an option, then sure but I'm just not sure how much you're going to be able to play with this one. Like I said, I will be VERY interested to see the first reports from tuners after a little dyno time.

The pulley is integral to the jackshaft on the supercharger, but that won't stop somebody from putting an overdrive pulley on the crankshaft. Since the pulley will use a dedicated belt, all it would take is for someone to manufacture a clone of the crank pulley but increase the size of the section the SC belt rides on.

:devil:

The pulley is integral to the jackshaft on the supercharger, but that won't stop somebody from putting an overdrive pulley on the crankshaft. Since the pulley will use a dedicated belt, all it would take is for someone to manufacture a clone of the crank pulley but increase the size of the section the SC belt rides on.

:devil:

Is there sufficient room for it?

JATO bottle. :D

There will be a limit on crank pulley size both in size and the effects of slowing down everything that runs on the belt. Sounds like there will be 3 belts: ac, accessories, and the blower running off one big pulley. Engineering at it's finest!

Slow things too much and the alternator will spin too low or the power steering pump will not keep up with steering.

8" serpentine belts, they are common...right!

Like I said- only enlarge the part of the pulley that the SC belt rides on. From the profile it would look like this (of course, it may not ride in the middle but on either end, but you get the idea).

Something that runs through a tubers mind for this package and the ZR-1 is a crank pulley redesign and a new SC snout that will allow pulley swaps. Look to over $5,000 like the Ford GT.

http://www.seanhylandmotorsport.com/online/product_info.php?cPath=90&products_id=1845

But in the end the SC stuff will be removed and twin turbos be installed for around $8,000 and be done. This setup will be removing 100 lbs from the top of the engine and lower center of gravity in the process.

Norm

CTS!
3M Clear bra.

Nothing else for a change. :halo:

CTS!
3M Clear bra.

Nothing else for a change. :halo:

Probably a smart move. I mean DAMN isn't it fast enough already?

CTS!
3M Clear bra.

Nothing else for a change. :halo:

ditto! with 550/550 and a car that looks that nice, I need nothing more. The oportunities to use those ponies will be rare.

If you happen to go the track..you are going to have a stock sedan running low 12s. If your playing on the street and get an opportunity to have a safe run with someone..your likely never going to lose to any sedan. what the hell...

hey all i have a good source at eaton and you can get the pulley off it is a press fit pulley i actually will have all the dimensions of the stock pullet and will be making a smaller one next week.will put up pictures asap.

As for tuning, I'm of the belief that there will always be power left on the table.

In the grand interest of everyone being happy with the cars when they purchase 87 octane gasoline in BFE along with reducing warranty risk, the engine will not be tuned to the edge from the factory. GM won't repeat BMW's M3 engine fiasco.

To stir the debate, let's compare:

2005 CTS-V with a 5.7L LS6 engine with a comparatively old school, less efficient supercharger puts out right around 450 rwhp or 550 at the crank.

Now we take a half liter larger engine at 6.2L with better flowing cylinder heads and bolt on a more efficient supercharger. Guess what - The LSA puts out the same power at 550.

Tweak the ignition timing a bit, reduce the fuel mixture (gut says it'll be 10 to 10.5:1 from the factory) and headers I'm sure we'll see LSAs over 500 rwhp. Heck LS6 cars are getting near that today with the same mods.

Welcome to power opportunity city with the LSA. Totally silliness in a RWD CTS-V. No more Lord Vader; this is Emperor Palpatine's hammer.

AWD. AWD. AWD. AWD. AWD. AWD. AWD. AWD. AWD. AWD. AWD.

Rick, remember too that V2 is designed to be boosted, not V1 which was designed to be NA. So the gains of 170 whp for V2 will not be as easy as V1.

Add 400 lbs at front hood height should make an interesting front to rear weight ratio. If awd comes it will lower center of gravity, adding more weight to the front...RS4! The drag on some of the boosted 4 bangers from Japan and Audi really shows up after 100 mph.

Are you talking about the bearing clearance in early E36 M3's?

Norm

Good to see that at least your head is still in the V game Stealth, even if your ass isnt.

Norm, good point with the LSA's lower compression ratio. One could read that as good news for cylinder pressure and spinning the blower harder in the quest for more power.

Looking at the GM's durability history of the gen III/IV small blocks and the aftermarket's quest for power over the years, we're going to see some extremely powerful, cost effectively modded '09 Vs that are still reliabile daily drivers.

Did I read somewhere that the '09 V uses an E67 engine controller?

Normally an engine designed for boost has MORE potential for extra pressure than an NA engine. I second the press fit pulley. I have my 10,000 psi puller in the garage waiting...

I also wonder if you can take the 3.73 final gear from the manual and replace the 3.23 in the auto.

Normally an engine designed for boost has MORE potential for extra pressure than an NA engine. I second the press fit pulley. I have my 10,000 psi puller in the garage waiting...

I also wonder if you can take the 3.73 final gear from the manual and replace the 3.23 in the auto.

Can't imagine why the gears wouldn't be interchangeable.

If you have a puller that will support the base you should be fine. Maybe a little heat and a small hammer.

The 3800 SC pulley had a tendency to mushroom if pulled around the perimeter.


Norm


Normally an engine designed for boost has MORE potential for extra pressure than an NA engine. I second the press fit pulley. I have my 10,000 psi puller in the garage waiting...

I also wonder if you can take the 3.73 final gear from the manual and replace the 3.23 in the auto.

For me the trick on the 3800 pulleys was get them as fresh from the factory as possible. I could also see a pumpkin or gear swap into an auto to get a quicker car early in the lifecycle. Any of these mods will require a lot better or bigger contact patch in back.

The pulleys did vary in effort.

With highway dropping from 25 to 19 mpg, I don't most would be happy seeing singles digits daily with a shorter gear ratio. We'll see.

Norm

For me the trick on the 3800 pulleys was get them as fresh from the factory as possible. I could also see a pumpkin or gear swap into an auto to get a quicker car early in the lifecycle. Any of these mods will require a lot better or bigger contact patch in back.

The guys who put SC's on the current V see the same drops. There are some V drivers who are not going to worry too much about MPG.

While there maybe headroom to boost the power significantly, I am a little concerned that there is not an equal amount of headroom residing in the bottom end... I wouldn't want to put a few cast pistons in geosynchronous orbit and having to explain that to my service adviser.

I am going to go out on a limb here and say you won't see too many tuners pushing the envelope too hard without replacing this Paris Hilton bottom end with that of a much meatier Jay-Lo bottom end.


I guess we wil have to wait until some tuners test the murky waters of tolerance for the LSA.
:)

I mean DAMN isn't it fast enough already?

I think so too.

I know we all like to mod, but I agree it's prolly gonna' be really quick. Power:Weight ratio and all. Maybe just "dress her up" a bit to make her stand out even more in a crowd.

It's going to be a nice car IMHO.