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#152802 - 09/06/04 07:42 PM Re: Happy new GP owner
tallpaul Offline
Member
Registered: 04/13/04
Posts: 100
Loc: waukee iowa
Like i said i am 6ft 6in tall and weigh 260.
to me it is a bit cramped. i fit better in a 2004 regal ls sedan with leather seats. :rolleyes:
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tallpaul
2004 buick regal ls sedan
sterling silver-graphite leather interior
1994 olds ciera s sedan
adriatic blue-drk blue interior
P195-70/R14 uniroyal tiger paw touring radials mounted on factory olds aluminum wheels.
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#152803 - 09/06/04 08:38 PM Re: Happy new GP owner
zachd Offline
Member
Registered: 04/15/04
Posts: 1316
Loc: Evansville, IN
Quote:
Originally posted by tallpaul:
Like i said i am 6ft 6in tall and weigh 260.
to me it is a bit cramped. i fit better in a 2004 regal ls sedan with leather seats. :rolleyes:
Yeah but the GP looks so much better!!

As for modding inexpensive. 3.4 pulley, coldair induction (CIA????),on a 04 no ubend to get rid of, colder plugs, that will net you average 25-30ish horses. and if you have no KR on that you could always try a 3.25 (get a modular system) pulley and that will net around 40 whp-ish. As for which pulleys you are seeing it is strictly SC pulleys. There are a few other but not many people run them.
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2006 GT!!! Yay my first supercharged car!
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#152804 - 09/06/04 08:49 PM Re: Happy new GP owner
Jizz Offline
Member
Registered: 03/22/04
Posts: 766
Loc: Central Maryland
TallPaul ... I know feel is everything but the 04 GP has .02" more leg room and more head room than the previous version -- Go figure crazy
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S's? Oh it has SS's!!!
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#152805 - 09/06/04 08:59 PM Re: Happy new GP owner
zachd Offline
Member
Registered: 04/15/04
Posts: 1316
Loc: Evansville, IN
I do know one other thing i could put a lot more speakers in the trunk of this car compared to my old car.........hehe but i wont........i love the trunk space.
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2006 GT!!! Yay my first supercharged car!
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#152806 - 09/07/04 04:22 AM Re: Happy new GP owner
ABlackVTXinMD Offline
Junior Member
Registered: 09/01/04
Posts: 25
Loc: Joppa, MD
Quote:
Originally posted by zachd:
Quote:
Originally posted by tallpaul:
[b] Like i said i am 6ft 6in tall and weigh 260.
to me it is a bit cramped. i fit better in a 2004 regal ls sedan with leather seats. :rolleyes:
Yeah but the GP looks so much better!!

As for modding inexpensive. 3.4 pulley, coldair induction (CIA????),on a 04 no ubend to get rid of, colder plugs, that will net you average 25-30ish horses. and if you have no KR on that you could always try a 3.25 (get a modular system) pulley and that will net around 40 whp-ish. As for which pulleys you are seeing it is strictly SC pulleys. There are a few other but not many people run them. [/b]
Can you explain those pulley changes in terms of boost?? Also, doesn't the PCM need to be recalibrated to remap fuel and timing to get a good safe tune to go with the extra boost??
_________________________
Ken
2004 Pontiac Grand Prix GTP/CG
2000 Ford F150 4x4 w/ extended cab
2003 Honda VTX1300S
1998 Suzuki Marauder VZ800
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#152807 - 09/07/04 10:42 AM Re: Happy new GP owner
jvojr Offline
Member
Registered: 07/31/03
Posts: 583
Loc: Catskills, NY
I wish I had the same problems as you guys. I'm 5'8" standing really strait, but I do find the seats a bit uncomfortable. As far as leg room goes, I found that the Porsche 911 has lots(hard to believe) and the Vette(78-82). As far as pulleys go, a 3.4 with just a CAI may make your boost around 13psi. However, if you open up your exhaust it will drop to around 10(so I hear). I do not know what my boost was on my 03 but I do know that it was much higher with the 3.2 pulley than stock. The boost guage was always pinned to the max even when I only punched it half way.
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JackO
2004 GTP CompG. WS6, 3.29 axle, HUD, tapshift, Premium sound, XM radio, leather, sunroof, 17inch 5 star chromies, BFG Comp T/A. Wizaired CAI.

Traded in. 2003 GTP. Every option but HUD. New Mods: Wizaired CAI, SLP Headers, Cat, U-bend and Downpipe, 3.2 Modular Pulley, Phase 3 rollers w/OR Pushrods, Larger Belt Tensioner Pulley, Gatorback, AL103's, 180 Degree Stat, DHP
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#152808 - 09/07/04 11:16 AM Re: Happy new GP owner
ABlackVTXinMD Offline
Junior Member
Registered: 09/01/04
Posts: 25
Loc: Joppa, MD
Quote:
Originally posted by jvojr:
I wish I had the same problems as you guys. I'm 5'8" standing really strait, but I do find the seats a bit uncomfortable. As far as leg room goes, I found that the Porsche 911 has lots(hard to believe) and the Vette(78-82). As far as pulleys go, a 3.4 with just a CAI may make your boost around 13psi. However, if you open up your exhaust it will drop to around 10(so I hear). I do not know what my boost was on my 03 but I do know that it was much higher with the 3.2 pulley than stock. The boost guage was always pinned to the max even when I only punched it half way.
The stock boost is what, 10 psi?? Are you saying that there is no recalibration of fuel and timing, change to fuel pressure, or inter-cooling necessary to run under 3 additional psi?? Thanks for the responses.
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Ken
2004 Pontiac Grand Prix GTP/CG
2000 Ford F150 4x4 w/ extended cab
2003 Honda VTX1300S
1998 Suzuki Marauder VZ800
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#152809 - 09/07/04 05:07 PM Re: Happy new GP owner
zachd Offline
Member
Registered: 04/15/04
Posts: 1316
Loc: Evansville, IN
Well to go from a stock to a 3.4 or a 3.25 pulley usually nothing is needed. MAF more air more fuel. One thing like i said is the colder plugs with more boost. You can always get a remapped PCM but with basic mods it is not necessary but will help it. With more extensive mods cam heads some other combos it is necessary to get rid of DTC's and to raise rev's and shift points but for the mods i list it is not necessary but can never hurt.......
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2006 GT!!! Yay my first supercharged car!
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#152810 - 09/07/04 07:40 PM Re: Happy new GP owner
jvojr Offline
Member
Registered: 07/31/03
Posts: 583
Loc: Catskills, NY
Quote:
The stock boost is what, 10 psi??
No.I said with a 3.4 with an aftermarket exhaust.
_________________________
JackO
2004 GTP CompG. WS6, 3.29 axle, HUD, tapshift, Premium sound, XM radio, leather, sunroof, 17inch 5 star chromies, BFG Comp T/A. Wizaired CAI.

Traded in. 2003 GTP. Every option but HUD. New Mods: Wizaired CAI, SLP Headers, Cat, U-bend and Downpipe, 3.2 Modular Pulley, Phase 3 rollers w/OR Pushrods, Larger Belt Tensioner Pulley, Gatorback, AL103's, 180 Degree Stat, DHP
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#152811 - 09/07/04 08:44 PM Re: Happy new GP owner
ABlackVTXinMD Offline
Junior Member
Registered: 09/01/04
Posts: 25
Loc: Joppa, MD
Jack dude - I understood it the first time. I'm just a transplanted Ford guy trying to learn his new GM. To aid my understanding, I establish the baseline w/ the stock setup. I was drawing from a shakey memory on the stock boost of the '04 GP. It looks like it's 9.5 psi (not 10) and the compression ratio is pretty conservative at 8.5:1. Pretty safe setup.

So you're saying that the 3.4" pulley increases boost about 3.5 psi (lost boost w/ freer flowing exhaust noted), and Zach says it will run OK without recalibrating the PCM, but probably better with recalibration. Thanks for catching me up on the mods. It would be nice to know what the pulley and CAI translates to in whp numbers. It's nice to kow that simple bolt ons that make a good difference are available.

Here's the stock numbers from C&D:

ENGINE

Type: supercharged V-6, iron block and heads
Bore x stroke: 3.80 x 3.40 in, 96.5 x 86.4mm
Displacement: 231 cu in, 3791cc
Compression ratio: 8.5:1
Engine-control system: GM with port fuel injection
Emissions controls: 3-way catalytic converter, feedback air-fuel-ratio control, EGR
Maximum boost pressure: 9.5 psi
Valve gear: pushrods, 2 valves per cylinder, hydraulic lifters
Power (SAE net): 260 bhp @ 5200 rpm
Torque (SAE net): 280 lb-ft @ 3600 rpm
Redline: 6000 rpm
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Ken
2004 Pontiac Grand Prix GTP/CG
2000 Ford F150 4x4 w/ extended cab
2003 Honda VTX1300S
1998 Suzuki Marauder VZ800
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#152812 - 09/07/04 08:52 PM Re: Happy new GP owner
zachd Offline
Member
Registered: 04/15/04
Posts: 1316
Loc: Evansville, IN
OK the reason it will run a lil better is becuase of timing advance in a aftermarket PCM. i think intense is +3 degrees. they adj tranny kickdown enable fans to run sooner etc

3.4 inch pulley + approx 25 WHP
3.25 pulley +approx 35-40 whps

i know the second one is more accurate because a local perf shop ownder has a ssei and did a baseline dyno and then swapped and dynoed again same day......he has no other mods.
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2006 GT!!! Yay my first supercharged car!
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#152813 - 09/08/04 06:06 PM Re: Happy new GP owner
InitialDGP Offline
Member
Registered: 09/08/04
Posts: 450
Loc: Germantown, Maryland USA
Good to see so many GP owners from MD, im a Germantown/Damascus guy myself, wicked back roads braching off 27 and 355 devilgrin before the new tires of course now im takin it easy to prep for the icy roads of MD in winter (had to have some fun first)

Ah b4 I make this too large to anwser your question about the air filters, for my reg 210hp v6 the Speebuilt FW CAI w/ K&N filter added a wicked growl after the 3 line and probly about 8-10hp, and I hear it turns your SC into a monster. banghead Have big plans for my baby including turbocharger to pep up that low end and probly gonna cryo my engine. GP mods definately worth every penny to see the look on that christmas decorated, cash wasted civic rocket when u leave his doors trembling.
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Modified 2001 Grand Prix GT 3800 Red/Orange Kills: Acura RSX type-S, Early 90's Rx-7, Mustang 5.0GT, Modded Cavalier, Assorted Civics, Assorted Integras, Sentra SE-R Spec-V, F-150, Early Modded Golf, Modded GP SE, Stock GP GT, Altima 2.5S, Maxima. Killed By: Modded RSX-S, Heavily Modded Older RX-7, 2005 Altima 3.5, VW Bora Modded, Modded Turbo'd Jetta. Now retired till further modification.
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#152814 - 09/08/04 09:21 PM Re: Happy new GP owner
zachd Offline
Member
Registered: 04/15/04
Posts: 1316
Loc: Evansville, IN
Quote:
Originally posted by InitialDGP:


I dont know how u can resist the temptation to mod the shiz out of it with that SC under the hood wouldve been 17.5 for a GTP and I can buy a SC for less than that off GPstore so didnt see the point.

in comparison im amazed how well the GP handles even without trac on,

Ah b4 I make this too large to anwser your question about the air filters, for my reg 210hp v6
There is a lot more different in just buying a supercharger off of the grand prixstore website. They only swap you M90. It can be done but if you read its very pricey because of the small stuff. yourbetter off with the turbo or a motor swap and tranny swap

well the traction control on a 01 gt has nothing to do with handling...........

and our GTs had 200 crank horses and 220 crank ft lbs. expect about 160 whp range and about 175-180 ft lb @ the wheel approx.......
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2006 GT!!! Yay my first supercharged car!
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