2004 gtp comp g

[MagniloquentFeller]

Hey fellas, i just recieved a 04 gtp comp g and id have to say the power doesnt wow you as much as the car is hyped up. Maybe you dont really feel the power because its such a big car. The TAPshift system is kind of slow rather than delivering lightining quick shifts. I need to do something to this car to get it to 0-60 in the late 4 seconds. Can anybody help me and advise me please...Also, i was at a stop sign on a hill. i had the car in drive. When i took my foot off the brake, the car began to roll back. Is this normal??? Wait, one last thing, when i rev the engine, it cuts off and stops just below 4000. it doesnt continue on to the redline. Why is that?

[kustomkid54]

0 to 60 in 4 sec. I'll sell you my GTX.
Put a shit kit in it. (No warrnety when your done)
My car sits on a small hill and doesn't move. How big was the hill?

[BIG-L]

Wait, one last thing, when i rev the engine, it cuts off and stops just below 4000. it doesnt continue on to the redline. Why is that?

Rev limiter programed into the PCM.

[jeffs_GTP_sleeper]

Stop revving the car in park!

The car is what it is, a high 14 to low 15 second car wit a 0-60 in 6.5-7seconds.

With some small modifications(CAI/3.4 pulley/180Tstat/DHP pcm)
That 0-60 should drop to 5 something and with a good launch you should have a 13second car.

With some more mods(exhaust work/3.0-3.2/rockers or cam/ported manis or headers/42#injectors)
That should put you in the mid12s to low13s depending on the launch/weather/and weight reduction you do.

Good luck these 04s have GREAT potential.

Here is a great site for mods:
www.zzperformance.com

According to this conversion site, I have a 0-60 in 3.5 seconds. LOL
http://www.tweak3d.net/videos/calcs/sixty.shtml

[BIG-L]

Quote from KustomKid

Performance Recipes


How fast is my L67-powered car in stock form?

We get asked this question all the time, so we’re going to give this our best shot…

If you have a ’97 to ’02 GTP or GS, your car will run about 14.8 in the quarter mile in stock form. There are lots of variables here, but this is a realistic average based on our experiences. If you have an SSEi, your car will be about one second slower. The Bonneville’s are only a few hundred pounds heavier, but they are slower for several other reasons too:

additional weight (several hundred pounds)
poor weight distribution for drag racing (things like the battery in the back seat, aluminum hood, aluminum control arms and aluminum front bumper all work to reduce the percentage of weight on the front tires, resulting in less traction during acceleration)

larger front brakes (more rotating mass reduces power put to the ground)
larger tires and wheels (increased rotating mass takes more power to accelerate)

restrictive PCM (much more aggressive traction control system cannot be overridden by simply pulling a fuse; PCM will actually retard ignition timing if you try to power-brake the car)
no Performance Shift function (so shift points are lower and shifts are slower)
no air opening behind the headlight means that removing the headlight won’t give you any cold air
The Regal GS is slightly (a couple tenths) slower than a similarly equipped GTP, for some of the same reasons as the SSEi.

There are MANY different possible paths to get you to a certain performance goal. Following are some EXAMPLES of recipes that we know work:

How can I get my GTP or GS to run in the low fourteens?
one step colder thermostat (180 degrees)
one heat range colder spark plugs (AC Delco 41-932 or Autolite 605 or NGK TR55)
cold air induction
3.40” supercharger pulley

How can I get my GTP or GS to run in the high thirteen’s?
two heat ranges colder spark plugs (AC Delco 41-919 or Autolite 104 or NGK TR6)
cold air induction
3.25” supercharger pulley
INTENSE 1.90:1 rocker arms/pushrods package
free-flowing cat-back exhaust

How can I get my GTP or GS to run in the low thirteen’s?
two steps colder thermostat (160 degrees)
two heat ranges colder spark plugs (AC Delco 41-919 or Autolite 104 or NGK TR6)
cold air induction
3.10” supercharger pulley
INTENSE 1.90:1 rocker arms/pushrods package
SLP headers, downpipe and free-flowing cat-back exhaust
DHP PCM
mix of unleaded race fuel
drag radial tires

How can I get my GTP or GS to run in the high twelve’s?
two steps colder thermostat (160 degrees)
three heat ranges colder spark plugs (Autolite 103)
cold air induction
ZZP throttle body
3.00” supercharger pulley
Lucas 42.5 pound/hour fuel injectors
INTENSE Stage 1 Blower cam/pushrods/rockers package
SLP headers, downpipe and free-flowing cat-back exhaust
DHP PCM
mix of unleaded race fuel
INTENSE Transaxle with INTENSE Limited Slip Differential and 3.29:1 final drive
street slicks

How can I get my GTP or GS to run in the mid twelve’s?
two steps colder thermostat (160 degrees)
three heat ranges colder spark plugs (Autolite 103)
cold air induction
ZZP throttle body
ZZP supercharger
2.80” supercharger pulley
Walbro fuel pump
Lucas 42.5 pound/hour fuel injectors
ZZP intercooler
INTENSE Stage 2 cylinder heads
INTENSE Stage 2 Blower cam
SLP headers, downpipe and free-flowing cat-back exhaust
DHP PCM
mix of unleaded race fuel
INTENSE Transaxle with INTENSE Limited Slip Differential and 3.69:1 final drive
street slicks

All the above numbers are GUIDELINES only, and make a few assumptions:
We assume you race at a reasonable altitude. You won’t be able to match these times if your track is 5,000 feet above sea level for example.
We assume that you race in good weather conditions. You won’t be able to match these times on a hot, humid day with low barometric pressure.
We assume that basic race preparation is done to the car. Remove the spare, empty the trunk, remove the floor mats, race with a quarter tank of fuel, set your tire pressures properly, etc.

We assume that you launch your car effectively. This is the most important part of the quarter mile race, and without a good launch, you will NOT be able to achieve your best E.T.

[MagniloquentFeller]

Smaller size pulleys are better in terms of performance???

[kustomkid54]

Thanks Larry,

I wouldn't use anything smaller them 3.4" pulley, on a stock GTP.
3.4" will give you about 20 to 25 extra HP.

[MagniloquentFeller]

Lets say i add a whole bunch of mods that i am planning to get shortly. Having a smaller pulley on the snout is better performancewise?

[MIGTPGUY]

hell yes it is Magniloquent. But your not getting the big picture. Just because you add "a whole bunch of mods" doesn't mean you can run anything smaller then a 3.4 inch pulley.(i believe stock is 3.8) a pulley is the cheapest bang for your buck. Buuutt, anything below a 3.4 inch pulley on a close to stock GTP is going to create KR(knock Retard) and for every degree of knock retard you have, you lose about 2-3 HP. You need to go to the tech files of ZZperformance.com and read about knock retard and how to mod a Grand prix.

[kustomkid54]

Read the Performance Recipes posted above. It will give you a working program of what to do. And after you do it, what you should get out of it.
The PCM on a GTP is the best. It brings all these mods together.

[MagniloquentFeller]

What the heck is knock retard???I feel so uminformed, im only 17...thats my excuse. But can somebody please tell me what knock retard is....And what is a tensioner pulley? Thank you.

[MIGTPGUY]

dude thats not a good exscuse
im 19 and untill i read an artile in zzperformance's website about "Mystery" KR as he puts it, then i myself had no idea what it was. Man , ask less questions, do more research thats what have i can found.

[kustomkid54]

Originally Posted by MagniloquentFeller

What the heck is knock retard???I feel so uminformed, im only 17...thats my excuse. But can somebody please tell me what knock retard is....And what is a tensioner pulley? Thank you.

I send you an IM

Guy,
Here's the new bumper sticker for your car

[MagniloquentFeller]

lol