Spyderman25

I'm trying to figure out the common way of getting there with a 2005 GTO... (other than N20)... What are the horsepower gains with bolt-ons like for these beautiful cars? Hit me up, folks. Have a good day, its almost summa-tymeeeeee!!!!!!! ha ha

PapaSmurf2005

Forced induction.

98Z28MASS

iTrader: (6)

yup FI, such as procharger ds1c at 8psi, aps turbo kit, or an extremely radical heads/cam package along with all the bolt ons (fast 90/90, LT headers, etc, etc)

DeepBlueZ

as was already stated...

there are a few head/cam "packages" out there designed to deliver 500 wheel horsepower, but realistically speaking, a stock motor with a blow or a turbo (or two! ) huffing into it is going to be a lot more driveable on the street.

Spyderman25

What kind of supporting mods do you generally need for a procharger kit (for the car to still be a solid DD)... other than what the kit comes with?

Spyderman25

and also for a sts twin turbo kit???... sorry, as you can see i have NO experience with F.I

peter@aps

iTrader: (2)

Here you go................550 rwhp at 7 PSI on pump fuel.

More info on the link below, http://www.airpowersystems.com.au/ls1/us_gto.htm

Pm me if you have any questions,

Peter

DeepBlueZ

man do I wish I could afford that setup.....

peter@aps

iTrader: (2)

Start saving now and you be ready in a few months time.

Peter

SDB

iTrader: (7)

the APS kit is as cheap as anything your realistically going to get that will make 550 rwhp and not be undrivable. If you want cheap, get L92 heads with upgraded springs, L76 intake kit, long tube headers and exhaust, cam. Probably do all of this for about $4500-5000 installed. COUld make 500 rwhp on a stick car with enough cam and CR.

Speedy0009

iTrader: (7)

Just got "official-unofficial" results from my tuner:

D-1SC Procharger, Kooks LTs, 60lb Mototrons, 4.00" blower pulley, AlkyControl methanol injection and other mods in my sig.....

530rwhp, 440rwtq... I will have the sheet in a day or two!

BTW- 2004 LS1.....

PapaSmurf2005

513RWHP was done on a M6, full bolt ons, ETP 225 heads and big cam. The driveability of the car is not bad, though FI is the way to go if the car is a DD.

One reason I never really liked the Prochargers... they never really made a good amount of TQ (vs the HP at least) IMO.

TT's are the way to go if you can afford it. What are your ture goals though. Just looking to hit a HP/TQ number, track times, etc?

Speedy0009

iTrader: (7)

My goals are mid-low 11's @ mid-upper 120's MPH. Dyno numbers don't really matter as long as they're enough to get me the track times I want... so I guess if they need to be higher I will make them higher! If I don't get the times I want.. I am considering a smaller blower pulley, cam or heads in the future! Unless I just go with a forged bottom end and call it a day!!

CMNTMXR57

While having a great set of dyno numbers will make you feel all warm and fuzzy inside, it would be wise for one to concentrate on the torque side first, as this is what this car REALLY needs, and then let the horsepower numbers follow suit. This car weighs nearly 4,000 pounds with the average driver in it. To move that mass, you need torque. I’d gladly give up a few RWHP for that!



In order to get torque (or more of it) from a supercharged setup, you need a roots style blower like a Magnacharger or a Whipple. You WILL sacrifice maximum RWHP vs. the centrifugal design blower like the Procharger that Speedy is running. Take a look at his numbers, 530rwhp is orgasmic, but look at the torque… 440 ft/lbs??? Not that 440 is bad mind you, but if I’ve got 530 ponies going to the rear wheels, I want about the same (if not more!) in torque hitting the rears also!



One thing to think about with this car (the GTO) is that most aren’t strong runners on the dyno when compared to similarly powered LSx powered vehicles. So looking at another setup in another vehicle that makes 515rwhp, will probably make a little less in a GTO. Some of this is part of the infamous heat soak issue we seem to suffer from.

SilverGoatGirl

iTrader: (2)

I'm quite happy with my Procharger. That combined with a custom cam from AZPS at 7 psi, I was at 571 at the wheels (bit higher now cuz I'm running more psi and on e85). Your torque numbers will be a bit lower than a TT setup, but it's extremely driveable and will get you to your goal numbers. You have lots of options though.

PapaSmurf2005

If his goal is to only hit xxx RWHP then yes a Procharger is the way to go. If he is looking for a specific track time, etc. I would have to say that the Proccharger is not the way to go. I'm sorry but for the power they make I have never been impressed with their track times...

Speedy0009

iTrader: (7)

The Procharger can make plenty of power to put the GTO well into the 11s all day... been done plenty of times as you can read on the GTO message board. Not going to get further into it... but the Procharger is certainly more of a favorite, for drag racing~!

speeddemongto

iTrader: (6)

ETP 225cc heads and a EDC Hellion Cam

98Z28MASS

iTrader: (6)

??? I know what your saying about the torque but at the track your not usually leaving off idle. Plus, too much torque down low and your blowing the tires off unless you have the car fully built for the strip and are using a slick/drag radial. Look at some of the top drag cars, plenty are using pro-chargers. Look at a few of the mods on this board that have prochargers and are running 10s/9s. If your going for a max effort all out build and want to hit low single digit times then a large single turbo is the way to go but the ds1c has put people into the 9's and f1r's, f2r's, etc have put others even lower into the single digits.

98Z28MASS

iTrader: (6)

Also, on a side note, there arent that many proven turbo kits out there nowadays and many need additional modifications to fit, or you have to have a kit custom built. With the procharger you can buy a kit that you know will fit with minimal modifications and will be extremely realiable.