LS4 Front-Drives 2005-2009 - Had a run against a last gen firechicken




SigmaX6
10-22-2009, 09:56 AM
I got to run up against a last gen and was wondering what type of motor does it have?

The mods that the car had intake and aftermarket mufflers driven by a incredibly hot female! (drools)

The car instantly pulled half a car length on me (manual). My jaw dropped and was like i lost but with my peddle to the floor i slowly caught up the the passenger door and by 146km i pulled just a nose infront.

Overall im happy i was even able to keep up! sadly i had to do twice as many mods just to keep up. I want a corvette now! lol

Wondering if anyone else has had runs against other fbodys and how did you do?

Mods:
DIY Intake
Shift Kit
Trifecta Tune
trans cooler
flipped motor mount
exhaust with catless DP/No Res


Vectus
10-22-2009, 11:28 AM
Yea i've had some runs with a couple of them. Lost one by a fender, and won one by about 1/2 car length. Lost when my car was stock, won with just my exhaust and intake.

ImpSS07
10-22-2009, 12:51 PM
I hang with some F-bodys just about every weeked but they are HEAVILY modified so I don't try to run them. The one guy thats not modded doesn't want to run me though :(


94ss06gxp
10-22-2009, 04:01 PM
but think they are top end of second when we are shifting out of first :( . . but i think we can start catching them after a while.

JP_GXP
10-22-2009, 04:41 PM
Last gen had LS1s, the previous had LT1.

Had run-ins with both,
stock LT1 Bird didn't put up a fight at all,
LS1 Bird with at least exhaust work, I got the jump of about a fender length and pulled slowly til 100, when he started reeling me back in,
and got destroyed by an SLP Camaro that I later found out runs 11s from a friend, don't know the mods.

If it weren't for TapShift, I wouldn't have done so well.

JDMC5
10-22-2009, 04:54 PM
but think they are top end of second when we are shifting out of first :( . . but i think we can start catching them after a while.

lol, not going to happen. There are three different gearing setups you can get with them. M6 3.42, A4 3.23, and A4 2.73. The manuals will be hitting top of second. Then again the 2.73 autos will do 100 in second gear just like yours.

SigmaX6
10-22-2009, 09:38 PM
Theirs a lot of bolt on fbodys floating around my area. Honestly it just might be my city but they have a stick up there ass lawlz. Ive only been able to convince two to run me. a stock Lt1 corvette which i beat the owner was like wth! lol and a Lt4 with complete bolt ons...man that thing was sick it kept a whole car on me all the way i just couldnt get any ground back.

On a side note every time they see a mustang there like GAME ON!

I hang with the dodge crew way more laid back here :lurk:

JP_GXP
10-22-2009, 09:45 PM
Most Mustang guys think they're untouchable that's why. :P LT1 Vette guys wig out when they lose to a sedan, too, lol.

SigmaX6
10-22-2009, 09:49 PM
I cant believe howmany people out there think im rocking a 3.8 supercharged. not dissing a 3.8 cause they can get sick with some mods. But 90 percent of peeps think my badge is a trim kit option.

JP_GXP
10-22-2009, 10:10 PM
I get that too, always ask "Is that thing supercharged?" I say, 'no,' and they ask "So you put a body kit on a little N/A 3.8L?" They also ask about how I made a V6 sound like a V8, keep in mind I have straight to mufflers, I just tell them I spent 2000 dollars on a custom exhaust system, some believe me some don't.

In their defense, there're only about 60-65K LS4 powered cars produced, from '05-'09.

CenTexSS
10-22-2009, 11:40 PM
I've been asked if mine is supercharged a lot also.

Usual reaction

"Those came with V8's???"

AlabamaGuy
10-23-2009, 12:02 AM
I've been asked if mine is supercharged a lot also.

Usual reaction

"Those came with V8's???"

"Anybody wanna run a Monte Carlo? It's just a L67 car."
*Pulls out and opens the cutout*
Another 2v Mustang falls....

CenTexSS
10-23-2009, 12:06 AM
I haven't gotten ANY 94-04 Stangs to run. I've ran a couple 05+ and they get me up top. But after porting the intake and hopefully headers that'll be cured.

JP_GXP
10-23-2009, 12:23 AM
94-98s are ridiculously slow, lol, 99-04s are closer.

My best 'Stang kill was an 05-09. The guy has his GF in the car with him, started trash talking, so I said ok I'll honk 3 times, I opened my cutout and looked over and he's like WTF. Got up to 40 in 1st, 3 honks, and I destroyed him, I slowed down and glanced over to see his GF laughing her ass off and he looked so ass-whipped.

I race a lot, always on wide open 2 lane highways, nowhere near any towns or cities, before anyone gets on my case. ;)

AlabamaGuy
10-23-2009, 12:37 AM
94-98s are ridiculously slow, lol, 99-04s are closer.

My best 'Stang kill was an 05-09. The guy has his GF in the car with him, started trash talking, so I said ok I'll honk 3 times, I opened my cutout and looked over and he's like WTF. Got up to 40 in 1st, 3 honks, and I destroyed him, I slowed down and glanced over to see his GF laughing her ass off and he looked so ass-whipped.

I race a lot, always on wide open 2 lane highways, nowhere near any towns or cities, before anyone gets on my case. ;)

I don't have problems with 2v of any year. lol Stock 3v are still right behind me. It may be my mods but I beat a intake/P&P heads/LTs/Exhaust/4.10s/Nitto 555r's/stage 2 clutch/ram air hood 04 GT and I was still on the stock tires. They really aren't as quick as people make them out to be.

NHRAMAN
10-23-2009, 12:49 AM
I got to run up against a last gen and was wondering what type of motor does it have?

The mods that the car had intake and aftermarket mufflers driven by a incredibly hot female! (drools)

The car instantly pulled half a car length on me (manual). My jaw dropped and was like i lost but with my peddle to the floor i slowly caught up the the passenger door and by 146km i pulled just a nose infront.

Overall im happy i was even able to keep up! sadly i had to do twice as many mods just to keep up. I want a corvette now! lol

Wondering if anyone else has had runs against other fbodys and how did you do?

Mods:
DIY Intake
Shift Kit
Trifecta Tune
trans cooler
flipped motor mount
exhaust with catless DP/No Res

NOT PEDDLE.....JEEZ....PEDAL.:drive: AND WHOEVER TOLD U THAT YOUR CAR HAS A CHANCE, UNLESS VERY SERIOUS MODS WERE PERFORMED.??????? and I am talking STOCK LS1.

CenTexSS
10-23-2009, 12:57 AM
I don't have problems with 2v of any year. lol Stock 3v are still right behind me. It may be my mods but I beat a intake/P&P heads/LTs/Exhaust/4.10s/Nitto 555r's/stage 2 clutch/ram air hood 04 GT and I was still on the stock tires. They really aren't as quick as people make them out to be.

All in the driver and traction. There's stock 99-04 that have run high 13's out of the box, and somethat run high 14's. I have a friend with a 99 GT with I/H/tune/DR's that routinely runs low 13's.

AlabamaGuy
10-23-2009, 12:58 AM
NOT PEDDLE.....JEEZ....PEDAL.:drive: AND WHOEVER TOLD U THAT YOUR CAR HAS A CHANCE, UNLESS VERY SERIOUS MODS WERE PERFORMED.??????? and I am talking STOCK LS1.

I agree. I'm pretty modded for these cars and I'm no where near stock LS1 times with an equivalent driver to myself.

TheMonteMan
10-23-2009, 11:46 AM
ive never seen the 2v 4.6 mustang in stock trim run a 13. the ls4 vs and ls1 the ls4 should lose by a wide margin from a dead stop. i think an ls1 car with no type of gearing from a roll would be a better match up but once again the ls4 should lose. all and all though the hp is in favor of the ls1 on top of being able to launch harder. its not really a fair match up a stock 2v 4.6 vs a stock ls4 the hp difference is big. ive beaten a few. with some gearing though they make up for the horse power difference and hold there own better but even then they should still lose. and i believe 94-96 was the 5.0. and i personally feel that 5L is the quicker car if the same bolt ons are thrown at it not including a blower. this is all just my opinion.

AlabamaGuy
10-23-2009, 12:04 PM
ive never seen the 2v 4.6 mustang in stock trim run a 13. the ls4 vs and ls1 the ls4 should lose by a wide margin from a dead stop. i think an ls1 car with no type of gearing from a roll would be a better match up but once again the ls4 should lose. all and all though the hp is in favor of the ls1 on top of being able to launch harder. its not really a fair match up a stock 2v 4.6 vs a stock ls4 the hp difference is big. ive beaten a few. with some gearing though they make up for the horse power difference and hold there own better but even then they should still lose. and i believe 94-96 was the 5.0. and i personally feel that 5L is the quicker car if the same bolt ons are thrown at it not including a blower. this is all just my opinion.

I think they only used the 5.0L W in the first year of SN95.

TheMonteMan
10-23-2009, 02:00 PM
94 and 95 is the 5.0. 96 is the 4.6 2v 215hp. which i dont think it even made 215hp.

LS1 Racing
10-23-2009, 02:50 PM
I've owned 2 4th gen F-Bodies...a 1999 6-speed SS with heads/cam/headers, and 2000 A4 Z28 with the original (2001) LS6 cam and some bolt ons. Quite frankly, even when the 2000 Z was bone stock, it would have crushed my Impala, tune, intake, and all.

Based on your story, it had to have been the LT1-powered 93-97 car that you raced, because there is no way in hell you're gonna run down ANY LS1 car from behind with an LS4 and the mods in your sig.

Now, if there's a power-adder (spray, turbo, etc.) that you're hiding from us, then this all makes sense, otherwise, I'm gonna claim LT1 'bird.

Not trying to be a dick or anything, but I've been around these cars for almost 10 years, and I know first hand how potent a stock LS1 F-body is.

StealthV8
10-23-2009, 09:31 PM
isn't the record for the 1/4 mile in a stock ls1 like 12.9? Now Lt1's are beatable for us easy. but for us to beat an ls1 we need all bolt ons, rockers etc, or the driver needs to suck and the car running rough.

LS1 Racing
10-23-2009, 09:46 PM
isn't the record for the 1/4 mile in a stock ls1 like 12.9? Now Lt1's are beatable for us easy. but for us to beat an ls1 we need all bolt ons, rockers etc, or the driver needs to suck and the car running rough.

I think you're right. As I recall, a Mustang rag back in 2002 got an '02 Camaro SS to run a 12.8 bone stock. It even beat the Cobra they were testing it against.

My 2000 A4 Z would run 13.50's all day long with just the free mods and a lid. It was probably an "average" car compared to some of the LS1s that were running 13.0 right off the showroom floor.

Vectus
10-23-2009, 10:10 PM
Little off topic, but i had a run in with a mustang today. Base model with up grades. I know he did the exhaust but... well thats all i could tell. ALSO as pre-05. Was just driving home, and i passed him. He made a really big effort to catch up since he got caught at a light. We stopped at a light and he was revving it up. Long straight road with no one a head. I said what the hell he worked hard to catch up. I open up my cut out and his face completely changed haha. Its pretty loud since i have it further up. Light turns green and i gun it. I leave him behind by.... well i could hardly see him anymore. I slowed down and chilled out. Well he didnt take it so well, he came back revving at me trying to egg me on. I politely declined and he got pissed. He gave me the bird and took off as fast as he could. I shrugged it off and then couldnt help but laugh when i passed him when he got stuck behind some cars. haha.

TheMonteMan
10-24-2009, 04:22 PM
i think that bone stock ls1s turning high 12s is more rare then typical. the fastest stock ls4 time ive seen was a 13.5 or 13.6 at atco in cold weather. anyway you look at it conditions the same with the same driver the car is at least .5 slower. i dont think he was reeling her in. perhaps she backed off a little or what have you. what i do think is in a street race anything can happen and just cause the car is faster doesnt mean the driver is better. you can miss a gear, stumble off the line, launch to hard, or get caught sleeping. your not racing the track or a timer in real life so it doesnt matter if the car is a .5 second quicker in that regard. though i feel the ls1 in 90% of the cases should win theres always a chance. on the street its not always the faster car that wins.

CenTexSS
10-24-2009, 05:23 PM
I love how people think the LS1 is unbeatable. A sorry driver in the LS1 levels the playing field quite a bit.

JDMC5
10-24-2009, 10:21 PM
nobody said it wasn't unbeatable but I don't think you realize how fast they are. For example I ran a 12.8@110 with an intake, tune and catback. All through an auto with 2.73 gears and the car drove itself. No offense but I'm just saying you'd have to have one awfully shitty driver in the LS1 to beat one.

20SS07
10-24-2009, 11:16 PM
Unbeatable, no. But given a driver that doesn't suck in the LS1 shouldn't be much of a question. Modded the LS1 has obviously more out there, and stock for stock, even the best stock time tested on an LS4 isn't as good as the worst of an LS1 haha. The LS1 cars weigh how much less and seeing as how it always seems like they were underrated probably have close to 350hp stock.

CenTexSS
10-24-2009, 11:23 PM
nobody said it wasn't unbeatable but I don't think you realize how fast they are. For example I ran a 12.8@110 with an intake, tune and catback. All through an auto with 2.73 gears and the car drove itself. No offense but I'm just saying you'd have to have one awfully shitty driver in the LS1 to beat one.

I know how potent they are. But it's not off the wall for a high 13 second car to beat a low-mid 13 second car due to driver. I've seen people run 14's in LS1 cars because they don't know what they're doing.

JDMC5
10-25-2009, 12:38 AM
I agree with both of you. I just wish one of you guys would build one up so we all could see the true potential these LS4's have. I would bet my left nut that just an LS2 intake, mild cam and headers would gain 100 hp. Prove me wrong.

JDMC5
10-25-2009, 12:42 AM
Unbeatable, no. But given a driver that doesn't suck in the LS1 shouldn't be much of a question. Modded the LS1 has obviously more out there, and stock for stock, even the best stock time tested on an LS4 isn't as good as the worst of an LS1 haha. The LS1 cars weigh how much less and seeing as how it always seems like they were underrated probably have close to 350hp stock.

its well known that they were underrated and they were at least 350hp. They were dead nuts with the C5 rwhp.

CenTexSS
10-25-2009, 01:32 AM
I agree with both of you. I just wish one of you guys would build one up so we all could see the true potential these LS4's have. I would bet my left nut that just an LS2 intake, mild cam and headers would gain 100 hp. Prove me wrong.

I think the intake issue can be solved with a Fasterproms stage 2 ported LS4intake, for simplicity's sake.

I guess mongoose would be the closest to what you're talking about since he's doing heads/cam/more ported intake soon. We'll have to see what his numbers looks like with that plus his ported exhaust manifolds.

LS1 Racing
10-25-2009, 04:45 AM
I love how people think the LS1 is unbeatable. A sorry driver in the LS1 levels the playing field quite a bit.

For a stock or mildly modified LS4 car, an LS1 is nearly unbeatable. The only tricky part of driving an LS1 F-body is getting the launch right. After that, monster midrange and stout top-end take over. An LS1 really comes on right about where our LS4s start to fall flat. The difference is huge.

JDMC5
10-25-2009, 02:26 PM
For a stock or mildly modified LS4 car, an LS1 is nearly unbeatable. The only tricky part of driving an LS1 F-body is getting the launch right. After that, monster midrange and stout top-end take over. An LS1 really comes on right about where our LS4s start to fall flat. The difference is huge.

depends on what trans you are running. My auto, 2.73 gear drives itself, a complete noob could run 12's with my car.

The manuals are the hardest to launch.

LS1 Racing
10-25-2009, 03:15 PM
depends on what trans you are running. My auto, 2.73 gear drives itself, a complete noob could run 12's with my car.

The manuals are the hardest to launch.

My 2000 originally had 2.73s (I swapped to 3.42's) and it was still pretty easy to light up the tires at launch on the street. You're right, though, the 6-speeds are not easy to launch cleanly.

JDMC5
10-25-2009, 06:33 PM
true, be there are a few factors. But for the most part a stock geared auto (273 or 323) with a decent set of tires should hook good....unless the road is super cold.

SigmaX6
10-26-2009, 09:10 AM
This spring ill be done classes and i already have a decent job lined up. Ill probably be getting a 02 corvette (insert whatever avail optional packages here) and keeping my GXP as a daily. Also i met up with the owner again and she said its a LT4. Not to say Im full of shit but Ive taken a older Corvette LT1 from 60 km he was stock though. These cars don't do bad after u hookup.

I personally love when Civics with stage 1 turbos (200hp) or a NA engine swap (H22) pull up on the HWY wanting to have a go and i blow them away... they usually do the ricer fly by! i love ricer fly bys!

JP_GXP
10-26-2009, 09:12 AM
Everybody knows LS4>LT1, I remember my first LT1 Vette kill ;)

LS1 Racing
10-26-2009, 11:26 AM
This spring ill be done classes and i already have a decent job lined up. Ill probably be getting a 02 corvette (insert whatever avail optional packages here) and keeping my GXP as a daily. Also i met up with the owner again and she said its a LT4. Not to say Im full of shit but Ive taken a older Corvette LT1 from 60 km he was stock though. These cars don't do bad after u hookup.


LT4 was 330 HP stock. Pretty stout, though it didn't have the top-end of a "less powerful" LS1. Your car runs pretty strong if you pulled on an LT4 at around 90 MPH.

JDMC5
10-26-2009, 01:45 PM
Ok, there are a couple things wrong here.

LT4 was 330 HP stock. Pretty stout, though it didn't have the top-end of a "less powerful" LS1. Your car runs pretty strong if you pulled on an LT4 at around 90 MPH.

He said he raced an "LT1" not an LT4 from a "60K" road, 60K = 37MPH. I agree, a bolton gxp should take a stock LT1 from a roll. However, DO NOT take them lightly. They actually make aftermarket parts for the LT1 and respond decent to them. For example, my buddies 95 camaro/ automatic with a pair of DR's and a CAI ran a 13.6@99mph.

Ill probably be getting an 02 corvette (base model/ Z51 package with an LS1, or Z06 with an LS6) and keeping my GXP as a daily. Also i met up with the owner again and she said its a LT4.

FYI, all C5's (97-04) only came with an LS1 or LS6. The best performance deal with the C5 right now is the 02/03 ZO6. I've seen low mileage ones go for 18K in perfect condition.

LS1 Racing
10-26-2009, 02:00 PM
Ok, there are a couple things wrong here.



He said he raced an "LT1" not an LT4 from a "60K" road, 60K = 37MPH. I agree, a bolton gxp should take a stock LT1 from a roll. However, DO NOT take them lightly. They actually make aftermarket parts for the LT1 and respond decent to them. For example, my buddies 95 camaro/ automatic with a pair of DR's and a CAI ran a 13.6@99mph.



FYI, all C5's (97-04) only came with an LS1 or LS6. The best performance deal with the C5 right now is the 02/03 ZO6. I've seen low mileage ones go for 18K in perfect condition.

Read his last update. He talked to the driver who said it was an LT4.

SigmaX6
10-26-2009, 10:03 PM
Cant wait to get into a corvette. Ive driven a 02 before and it was really fun and scary. It had complete bolt ons and a tune. Really fun!

TheMonteMan
10-27-2009, 03:14 AM
idk about pulling on an Lt4 but a stock Lt4 is definitely a better match up then a stock Lt1. it all depends on what you consider pulling on someone.

JDMC5
10-27-2009, 09:07 PM
who the hell pulls an LS1 for an LT4? Highly unlikely.

TheMonteMan
10-28-2009, 12:20 AM
what do you mean? ^^^^

SigmaX6
10-28-2009, 02:47 AM
I think he meant how do i mistake a LT4 for a LS1????

Simply put i know jack shit about other L series motors or fbodys. Picked up a mag today at local book store that explains the history of the L series V8s very impressive. This is actually my first V8 EVER. Ive owned 4 bangers all my life.

Went from:
03 sunfire
stage 1 pistons/rods
75 shot nitrous
Hp Tune
Header/intake
Race exhaust
and the usual ricer body mods.
Best quarter mile 14.5 LAWLZ

In the End i spent 12 grand on that car sold it for 5 i just wanted it gone! lol

Stock GXP last year did 14.1
This year 13.9 with borrowed DR

JP_GXP
10-28-2009, 03:08 AM
I'm sure he meant who would engine swap an LS1 for an LT4 in a Firebird.

TheMonteMan
10-28-2009, 02:34 PM
thats what i thought he meant too but it still doesnt make any sense to me.

JP_GXP
10-28-2009, 07:50 PM
He considers the LS1 the superior of the two and is confused to as why someone would swap for the inferior engine. lol

JDMC5
10-28-2009, 10:43 PM
He considers the LS1 the superior of the two and is confused to as why someone would swap for the inferior engine. lol

.......something like that. Don't you agree?

I was just saying that an 02 comes with an LS1 not an LT..anything.

JP_GXP
10-28-2009, 10:48 PM
I don't know anything about the LT4... I just know that the LS1 is better than LT1 in most ways. I also know that there are people who prefer the LT1. To be honest, I'm relatively new to domestics, drove my RX since I was 18 til I was 21, and I'm 22, now. lol That explains my ricey GXP. ;)

2008 GXP
10-29-2009, 02:15 PM
I got to run up against a last gen and was wondering what type of motor does it have?

.....


93-97 had the LT-1
98-02 used the LS-1

LS1 Racing
10-29-2009, 04:15 PM
I don't know anything about the LT4... I just know that the LS1 is better than LT1 in most ways. I also know that there are people who prefer the LT1. To be honest, I'm relatively new to domestics, drove my RX since I was 18 til I was 21, and I'm 22, now. lol That explains my ricey GXP. ;)

LT4 (no hypen!) had better heads and intake. The cam may have been different, too. They were both Gen II motors and were more similar to the original small block Chevy than the LS-style Gen III and Gen IV motors.

In reality, there's just no comparison between a stock LS motor and an LT1. The LS makes serious torque from idle to redline, while the LT1 was all done by 4500. It was an improvement over the old SBCs, but progress is progress.

JDMC5
10-29-2009, 04:28 PM
I wouldn't say it's all done by 4500rpm, it just makes less power than the LS1 above 4500rpm. I use to have an LT1 and it ran well all the way to 6K. Its just that for comparison, stock for stock, mod for mod, efficiency, rigidity, the LS1 is a better engine, that's all.

JP_GXP
10-29-2009, 05:10 PM
I didn't use hyphens, I know better :P

And thanks for the info :)

BlueChevyGuy
10-30-2009, 02:37 PM
Didn't the 1997 Firebird Firehawk (SLP edition car) have the LT4 engine? Same goes for the 1997 Camaro SS (SLP car) - right? I'm thinking GM had some leftover LT4's from the 1996 Corvettes and used them in those applications.

I must have a ringer LT4 Corvette - I had a run-in with my neighbor and his 1999 fixed roof Corvette a few years back. It was a pretty close race, but I ended up about a half-car length ahead of him. Granted, it was over a distance of less than a quarter mile...so that's not saying much. I'm guessing he may have caught up to me had we gone much further, as LS1's have a pretty nice top end. But don't underestimate the LT4's...

That being said, I also enjoy the power of our LS4 cars too!

Matt87GTA
10-30-2009, 06:22 PM
Between my fiancee and I, we have two LS1 TAs and one LS4 GXP. Her WS6 is an A4, 3.23 gear, bolt on only car and my TA is a M6, 3.42 geared heads and cam and full bolt on car. There is no question on what the pecking order is. LS4 cars have no business messing with LS1 Fbodies 99.9% of the time.

LS14Winter
11-10-2009, 02:23 AM
I have owned two fourth gen firebirds and I will be the first to admit that on the street anything can happen...

However my 00 Firebird TA automatic 2.73 geared firebird layed down a 13.4@104.9mph on my VERY first pass (didnt do anymore after that). All it had was a 3" catback, stock tune. The car is foolproof, the gears are so long that you cant even screw up the launch! I held the brake, rev to about 1800. light went green and punched it. car didnt even chirp the tires, pulled strong out of the hole though. After I did big cam, valvetrain, headers, 3" y pipe, slp intake, 3400 stall, 4.10 rearend -- it was much harder to be consistant. my first pass was a 14.2@110 followed up by a 12.8@113 (was having tuning issues, car was bouncing off the rev limiter between shifts)

Now I currently have a six speed firebird and I could see a grand prix gxp beating a six speed fbody on the street. My manual wheel hops like something fierce or spins the tires like crazy through half of second. The GXP i drove today feels like one of the better front wheel drive cars to launch... from a roll a healthy stock LS1 would walk a bolt on LS4 99% of the time IMHO. stock LS1 with autos make 290whp+ the best dyno ive seen around here is 250-260 -- coming from a car that does not weigh less.

LS1 Racing
11-11-2009, 10:41 AM
I have owned two fourth gen firebirds and I will be the first to admit that on the street anything can happen...

However my 00 Firebird TA automatic 2.73 geared firebird layed down a 13.4@104.9mph on my VERY first pass (didnt do anymore after that). All it had was a 3" catback, stock tune. The car is foolproof, the gears are so long that you cant even screw up the launch! I held the brake, rev to about 1800. light went green and punched it. car didnt even chirp the tires, pulled strong out of the hole though. After I did big cam, valvetrain, headers, 3" y pipe, slp intake, 3400 stall, 4.10 rearend -- it was much harder to be consistant. my first pass was a 14.2@110 followed up by a 12.8@113 (was having tuning issues, car was bouncing off the rev limiter between shifts)

Now I currently have a six speed firebird and I could see a grand prix gxp beating a six speed fbody on the street. My manual wheel hops like something fierce or spins the tires like crazy through half of second. The GXP i drove today feels like one of the better front wheel drive cars to launch... from a roll a healthy stock LS1 would walk a bolt on LS4 99% of the time IMHO. stock LS1 with autos make 290whp+ the best dyno ive seen around here is 250-260 -- coming from a car that does not weigh less.

Gotta love that 14.20 @ 110! Sounds like my first pass after heads/cam/longtubes in my 1999 Camaro SS. I went 14.60 @ 113. It just revved too fast, and I was bouncing off the limiter, too.

You're dead-on as far the LS4-LS1 comparison. LS4 makes less power in car that weighs the same as a 4th gen F-bod.