2007 Grand Prix

[tylers88]

Here's our GXP(my girlfriend's and mine). Its a 2007 stock with 20% tint on the back 3, the GXPs have a different ground effect package, 18s and crossdrilled rotors so it looks pretty good.

Pic quality is pretty crappy
http://www.grandprixforums.net/members/iagxp-albums-2007-gxp-picture6158-a.jpg
http://www.grandprixforums.net/members/iagxp-albums-2007-gxp-picture6155-a.jpg
http://www.grandprixforums.net/members/iagxp-albums-2007-gxp-picture6161-car-lake-shore.jpg
http://www.grandprixforums.net/members/iagxp-albums-2007-gxp-picture6162-a.jpg
http://www.grandprixforums.net/members/iagxp-albums-2007-gxp-picture6164-gxp-gm-badge-lake-reflection.jpg
Had a bunch of stuff stuck to the doors after washing it a bunch of time, finally clay barred them to get rid of the crap
http://www.grandprixforums.net/members/iagxp-albums-2007-gxp-picture6163-v8-woohoo.jpg
Forgot the QD so it had a couple water spots AGHH!
http://www.grandprixforums.net/members/iagxp-albums-2007-gxp-picture6159-a.jpg

Paint correction pictures
http://gmfullsize.com/forum/picture.php?albumid=3435&pictureid=27354
Right side of hood before
http://gmfullsize.com/forum/picture.php?albumid=3435&pictureid=27353
Left side of hood before
http://gmfullsize.com/forum/picture.php?albumid=3435&pictureid=27355
Swirly door
http://gmfullsize.com/forum/picture.php?albumid=3435&pictureid=27357
Hood figuring out my process
http://gmfullsize.com/forum/picture.php?albumid=3435&pictureid=27358
Hood done, has a couple chips and a couple bugs etched into the paint
http://gmfullsize.com/forum/picture.php?albumid=3435&pictureid=27359
Same door as other pic
http://gmfullsize.com/forum/picture.php?albumid=3435&pictureid=27362
Passenger side done

[tylers88]

wow thanks for the comments guys

[AutoMods]

throw some pics of your girlfriend on the hood and you'll get some comments for sure

[Stutz]

Shouldve got the V6! I like the looks of the GXPs but i would rather have a L32 in there

[AutoMods]

didn't realize that had the 5.3 in it. thats awesome. way better then the l32 imo

[Domestic Disturbance]

I think I looked at this with one eye open the other night. Definitely love those cars though, and thankfully its not in a grandma plum or teal color

[tylers88]

hey look at that one smartass remark and some feedback, thanks for the compliments


didn't realize that had the 5.3 in it. thats awesome. way better then the l32 imo

its pretty fast for a stock car, especially a Grand Prix ran it up to 135mph with temp tags in it still I wanted to top it out but some hills were coming up very fast

[Batwood]

How many miles on it?
From what I've read, the tranny likes to take a dump around 60k.

In fact, we just got one in the other day with 65k and I noticed a brand new GM Parts sticker on the side of the trans.

They are damn fast for a stock fwd. Its a different feeling than the S/C 3800s.
Have it at the track yet?

[sparkles]

I just had a guy call me this week about doing a trans in one. No thanks.

[Stutz]

didn't realize that had the 5.3 in it. thats awesome. way better then the l32 imo

I bet all the gxp owners thought that too before they got smoked by a pullied gtp

[AutoMods]

can the l32 do this ?

http://www.norotors.com/index.php?topic=2930


http://www.youtube.com/watch?v=jbRw9pO1DMY&feature=player_profilepage

[Batwood]

http://www.youtube.com/watch?v=miWlcEfMzQ0

Yes, yes it can.
Stock block/crank. Probably has pistons, but thats it.
Definitely went faster, but thats an old video.
Was TT last year, now is single turbo and made like 100whp more.

Edit: now that I look, that video is TWO YEARS old.
They could pull 7's this year if they haven't already.

[Stutz]

Win!

Is that a front wheel drive rx7 with a LS4 in it?? lol im comparing the LS4 to the L32 in wbodys not just a LS motor in any rwd drag car.. GXPs have very little aftermaket compared to gtps

[tylers88]

How many miles on it?
From what I've read, the tranny likes to take a dump around 60k.

In fact, we just got one in the other day with 65k and I noticed a brand new GM Parts sticker on the side of the trans.

They are damn fast for a stock fwd. Its a different feeling than the S/C 3800s.
Have it at the track yet?

I have heard that also, its got about 61,00 but I am a GM tech and get parts for cost+10% and we dont beat the snot out of it. If it does let go it will get beefed up (shift kit, clutches etc.) No track days yet, it needs a flush first. Hopefully by the end of the summer it will have a track day. I'm afraid my girlfriend will get readdicted to racing, she won 3 points championships in a row, 2 jr. dragster and the 3rd in pro II and Humbolt Dragway its 1/8th mile.

[AutoMods]

Yes, yes it can.
Stock block/crank. Probably has pistons, but thats it.
Definitely went faster, but thats an old video.
Was TT last year, now is single turbo and made like 100whp more.

Edit: now that I look, that video is TWO YEARS old.
They could pull 7's this year if they haven't already.

nice!!! thats cool. i think i've ran into that shop's website before. wish he had more details. although in reality i find it a rarity to see that motor break into the 12's at the drag strip. You have any links to the motor and build specs and they used stock rods? What failed on your motor?




Win!

Is that a front wheel drive rx7 with a LS4 in it?? lol im comparing the LS4 to the L32 in wbodys not just a LS motor in any rwd drag car.. GXPs have very little aftermaket compared to gtps


don't matter if the its fwd or rwd or in a boat or on an engine dyno we are talking about which motor is better. the ls4 is extremely similar to the other ls motors. same 243 heads and probably cams interchange. same tuning software. the aftermarket should be there on the engine.

the link I gave you above the guy has $8500 into his project including the car and he did drive it to the track. i'm sure your video is a drag car also

here is parish's old car who used to have the stock 5.3 record , not a shop car

http://www.youtube.com/watch?v=Qk9uU_3VHT0

[Batwood]

nice!!! thats cool. i think i've ran into that shop's website before. wish he had more details. although in reality i find it a rarity to see that motor break into the 12's at the drag strip. You have any links to the motor and build specs and they used stock rods? What failed on your motor?

I'd have to dig up the details. ZZP is basically the only remaining 3800 vendor. Tube frame all custom stuff.
They went 8.65 with 7XX hp TT and a 50 shot off the line. Moved up to a huge bullseye turbo and no nitrous and ran like 8.68 last I saw. (base-tune)
I haven't checked lately but I wouldn't be surprised to see low low 8s, high 7s.
There are quite a few turbo cars in the 11s. Not many 10s though. Although Intense racing had a GP in the 8s and a 3800 Firebird in the 8s as well.

I spun bearings. Lots of bearings.

[Stutz]

don't matter if the its fwd or rwd or in a boat or on an engine dyno we are talking about which motor is better. the ls4 is extremely similar to the other ls motors. same 243 heads and probably cams interchange. same tuning software. the aftermarket should be there on the engine.

And a L32 gets better gas milage, longer lasting, i have seen many L67/L36s with 200k plus miles. When we are talking about in a fwd wbody car then L32 > LS4 imo. If you want all out performance then yeah of course a LS motor in a rwd car will be better

There are quite a bit of supercharged gtps in the 11s too. Awhile back i almost bought the car that has/had the supercharged non-ic record that was 11.4x, i believe the supercharged/stock cam/no nitrous record is 11.8

[Deimos]

I though the TT3800 in the 8's was Rwd at least pretty sure it looked that way front the whole front half of the car removed

[Stutz]

Matt M's ttgt is front wheel drive

http://www.youtube.com/watch?v=I5SYPtPfAdQ

[Deimos]

meh either way still impressive

[AutoMods]

here is another 5.3 stock block record chase posted last month, should crack the 8's if he had a clean pass. is that parish walking away at the start of the video?


http://www.youtube.com/watch?v=Lq1YsaCdFYo

[White04GTP]

The L32 Has a much better aftermarket, and given the opportunity i would pull an L32 and make it a RWD Drag car over the 5.3, There are only a few things out there for the 5.3, Intake, headers, and a turbo kit thats far overpriced somewhere. As to where the 3800 has a company pretty well devoted to them (ZZP) and SOOO many options from intakes, to full custom head kits, and cams. plus, and L32 with a 3.6 and supporting mods will net you ~40 hp and ~5 mpg extra. Just my $.02

[Stutz]

The L32 Has a much better aftermarket, and given the opportunity i would pull an L32 and make it a RWD Drag car over the 5.3, There are only a few things out there for the 5.3, Intake, headers, and a turbo kit thats far overpriced somewhere. As to where the 3800 has a company pretty well devoted to them (ZZP) and SOOO many options from intakes, to full custom head kits, and cams. plus, and L32 with a 3.6 and supporting mods will net you ~40 hp and ~5 mpg extra. Just my $.02

If its rwd 5.3 all the way..

dumbass lol

btw this is like your 5th username you cant remember one password?

[White04GTP]

ALSO Theres a difference between a 5.3L From a silverado, and a LS4 5.3 from a grand prix. so really all the 5.3 RWD videos are redundant to this thread because theyre not from a grand prix and not the same internally

[AutoMods]

And a L32 gets better gas milage, longer lasting, i have seen many L67/L36s with 200k plus miles.

5.3 has displacement on demand. gas mileage is the same. 5.3 gxp is epa rated at 18 city 27 highway. reliability isn't a problem with the 5.3

[Deimos]

the 5.3 in S10 discimates all

[AutoMods]

ALSO Theres a difference between a 5.3L From a silverado, and a LS4 5.3 from a grand prix. so really all the 5.3 RWD videos are redundant to this thread because theyre not from a grand prix and not the same internally

tell me the differences

[Deimos]

well the one in GXP's suck to work on. Try doing a high pressure line.

[Batwood]

tell me the differences

I can't remember off the top of my head, but I'm pretty sure it has a shortened crank to fit in there sideways. Not really sure what else or what is interchangeable.

[White04GTP]

5.3 has displacement on demand. gas mileage is the same. 5.3 gxp is epa rated at 18 city 27 highway. reliability isn't a problem with the 5.3

Reliablitity from the motor maybe not.. But that motor will eat up the tranny, Too much power for a shitty trans to start with. so im gonna stick with the L32. and the first 3.8 was an L67 with 235K when the car caught fire. L32 > LS4 imo

[White04GTP]

If its rwd 5.3 all the way..

dumbass lol

btw this is like your 5th username you cant remember one password?

no only one i forgot and that was for the regal, every other one gets fucked up in tranlation id apply for one and then i wouldnt get a confirmation email and id forget about it and try again, not my fault, just the admins back in the day

[White04GTP]

Cant run flex fuel in the LS4 also the engine codes are different for the truck its the L33 LM7 LM4 L59, LS4 was adapted specifically for FWD crank was shortend, by 13mm, Aluminum instead of iron block, oil pan and coolant passages are also different

[Stutz]

Summary of it all. in stock form performance wise Ls4>L32. In everything else or once you start modding it then L32>LS4.

[White04GTP]

I'd agree with that.

[AutoMods]

I mean any differences in the ls4 motor that would make it not as good as the truck version of the gen iii 5.3's. the generation 4 5.3 ls4 should be just as good, probably better. all the other gen iv stuff (ls2, ls3, ls7) is better although the aluminum block will have a lower max hp level then the iron truck but it should still be 800whp reliably with the forged internals aluminum block. can't say what tranny options there are though.

[AutoMods]

Summary of it all. in stock form performance wise Ls4>L32. In everything else or once you start modding it then L32>LS4.

i highly doubt it. unless the car is limited by transmission strength/upgrades. especially 500+whp the v8 is going to do a far better job, will get there easier and be more reliable and more low end

[Stutz]

i highly doubt it. unless the car is limited by transmission strength/upgrades. especially 500+whp the v8 is going to do a far better job, will get there easier and be more reliable and more low end

If that is the case why is there like one ls4 in the 11s? Cheaper/more mods available for the 3800s. Plus this is the fwd wbody world it is limited by transmissions/traction

[AutoMods]

If that is the case why is there like one ls4 in the 11s? Cheaper/more mods available for the 3800s. Plus this is the fwd wbody world it is limited by transmissions/traction

not sure, those gxp's are newer and were under warranty and it takes a while for people to want to mod their cars and people are hesitant to modify newer cars that are still worth a lot of money. there is a lot fewer of them sold as we have been in a bad economy. plus the v8 fans have other options like the gto, g8, camaro, etc.

for a while the 3.8 is cheaper to modify because it already has forced induction so yea you can add more boost cheap and see gains. but if you take the jump on the v8 and add a power adder your gains will be even greater. If gm thought the 3.8 was better than their ls motors they would put a rwd version of it in the G8, gto, camaro and corvette, instead the opposite is true and the ls motors are being put into everything cars, trucks, suv's.

[Stutz]

not sure, those gxp's are newer and were under warranty and it takes a while for people to want to mod their cars and people are hesitant to modify newer cars that are still worth a lot of money. there is a lot fewer of them sold as we have been in a bad economy. plus the v8 fans have other options like the gto, g8, camaro, etc.

for a while the 3.8 is cheaper to modify because it already has forced induction so yea you can add more boost cheap and see gains. but if you take the jump on the v8 and add a power adder your gains will be even greater. If gm thought the 3.8 was better than their ls motors they would put a rwd version of it in the G8, gto, camaro and corvette, instead the opposite is true and the ls motors are being put into everything cars, trucks, suv's.

Again the whole point was the 3.8 being better in a FRONT WHEEL DRIVE WBODY. lol

[Domestic Disturbance]

I think the water pump is different on the ls4 too and comes up higher, which is the reason for the different intake manifold. Personally would want the v8 because all it would need is exhaust and I'd be done with it haha. Either way though, fwd blows.

[85XR7Project]

There was a modded out ls4 Monte carlo ss in hot rod recently, wonder how much he blasted into that bitch. Personally I'd rather have the v8, I had a gen 3 SHO with the V8 and with a few mods it was the meanest sounding Taurus you'd ever heard.

[Drifte]

http://www.youtube.com/watch?v=iuygRWVwuUI&feature=player_embedded
Satchel= L32

[tylers88]

I know the LS6(C5 Z06 engine) and my LS4 have the same heads, I have 10.1:1 compression, 325ci(truck 5.3 is 323) hp is 303 @ 4400 torque is 323 @ 4400 revlimiter @ 6100(sounds BADA$$ shifting at limiter) mated to a 4T65E-HD transaxle and my car has paddle shifters that I think accually shift slower than the gtp's/supercharged gt with 123D shifter

It is suposed to run 91 but we run 89 and drive it nice and get 26-28 mpg, on 91 we get about 22-25 and whenever we race it I'm going to run it down to about 1/4 tank and fill it with 93.

My plans for it are a 2nd set of factory wheels and run the 18x8's(front stocker) on all 4 in the summer with 255/45ZR18 Goodyear Eagle F1 Supercars(tires on front now, LOVE THEM) and the 18x7s(rear stocker) all the way around in the winter with some kind of aggresive snow tire for that BAMF rally car look. Maybe have the front windows tinted 35% to compliment the 20% rear. Performance wise I just want to hear the car, K&N CAI, Borla XR1 Race mufflers and mabye a LONG glasspack in place of the factory resinator. Not much but it will make it ours.

Also White04GTP I would love to build a regular cab short box S10 with an L32 and a T-5 with C5 front supensio and a C4 Dana 44 rear. Fast, reliable as hell and 30+ mpg would be fun. A guy I work with almost bought one to put in his rail. He was going to run aviation gas and clamp the waste gate(or however they are controlled) most of the way closed and just let it fly

[White04GTP]

not sure, those gxp's are newer and were under warranty and it takes a while for people to want to mod their cars and people are hesitant to modify newer cars that are still worth a lot of money. there is a lot fewer of them sold as we have been in a bad economy. plus the v8 fans have other options like the gto, g8, camaro, etc.

for a while the 3.8 is cheaper to modify because it already has forced induction so yea you can add more boost cheap and see gains. but if you take the jump on the v8 and add a power adder your gains will be even greater. If gm thought the 3.8 was better than their ls motors they would put a rwd version of it in the G8, gto, camaro and corvette, instead the opposite is true and the ls motors are being put into everything cars, trucks, suv's.

once again, this thread is w-body specific, your rant about rwd platforms and trucks means nothing to this conversation, as for a turbo kit, i do believe the turbo for the LS4 is cheaper than the good turbos for the 3800s. so your argument is pointless. and yes, transmissions are the biggest problem when getting into high power with fwd 3800s. at about 300 hp the 4t65HD is a time bomb o you have to get a better trans, and even then you'll still have hardcore trac problems

[sparkles]

It is suposed to run 91 but we run 89 and drive it nice and get 26-28 mpg, on 91 we get about 22-25 and whenever we race it I'm going to run it down to about 1/4 tank and fill it with 93.

How do you get better gas mileage with ethanol?

[Deimos]

plus as a gm tech he does realize that octane is the fuels ability to resist burn?

[tylers88]

How do you get better gas mileage with ethanol?
Because all I can get around here for 91 is E10


plus as a gm tech he does realize that octane is the fuels ability to resist burn?
The way I had it explained to me in school is that 87 has more of a bang and 91 would have more push but burn a little slower and resist pinging more because it doesnt have that bang behind it

[White04GTP]

Because all I can get around here for 91 is E10 The way I had it explained to me in school is that 87 has more of a bang and 91 would have more push but burn a little slower and resist pinging more because it doesnt have that bang behind it and that would be exactly correct. Higher octane burns slower and fights KR or ping. as to where 87 and 89 bang harder but then again thats why they make 91 and 93 with ethanol. Yeah its supposed to help burn cleaner but it helps alot!

[Deimos]

who besides me and dustin ever gets up this early?

[LT1Dan]

who besides me and dustin ever gets up this early?

Me! I'm usually up at 530 but I have a"late" start time this week at work.

[Drifte]

who besides me and dustin ever gets up this early?

I was just talking to you yesterday at 5 wasnt I?

[sparkles]

I'll take your guys word on the "bang" and "push" on the fuels, but to my knowledge, you have to burn more fuel if it has Ethanol in it to get the same performance as if it were all gasoline and no alcohol. 30% more if you're running E85. Obviously not going to be that much if you're running E10, but you see my point?

[AutoMods]

if i had to guess, fuel economy is mostly related to stoichemetric value and not octane.

[White04GTP]

if i had to guess, fuel economy is mostly related to stoichemetric value and not octane.

You also have to take into account, elevation, air pressure, happy shit like that.

[AutoMods]

i was talking about fuel economy between different fuels... all other variables the same. when you mix in ethanol it changes the stoich point so thats probably when your going to see a change in mpg's. If you take 87 octane with no ethanol and compare it to 91 with no ethanol you'll probably get the same gas mileage or slightly better with high octane due to your engine not pulling any timing. octane doesn't dictate the fuels energy content just the ability to resist pre-ignition.

[sparkles]

That was my point. There's no way you're getting better MPG with 89 Ethanol vs 91 Non Ethanol. It would require more fuel being burned.

[Drifte]

I have compared MPG in several vehicles from 80 ethanol to 91 non ethanol and 91/92 ethanol. No matter the vehicle, the 91 non ethanol (Caseys) always gets better MPG. Now in this guys case, when he runs 89, he stays out of the throttle. With the 91 of any sort he doesn't have to.

[Deimos]

I agree with Colton completely and utterly driver mod

[tylers88]

That was my point. There's no way you're getting better MPG with 89 Ethanol vs 91 Non Ethanol. It would require more fuel being burned.

with e10 89 and e10 91 no its not

[sparkles]

In that case, they should be the same then.

[tylers88]

I agree with Colton completely and utterly driver mod


In that case, they should be the same then.

well either way the fuel is $0.20 cheaper a gallon and at about 1200 miles a month it adds up. Plus keeping our foot out of it helps with saving the trans as long as possible

[AutoMods]

well either way the fuel is $0.20 cheaper a gallon and at about 1200 miles a month it adds up. Plus keeping our foot out of it helps with saving the trans as long as possible

thats about $12 a month. just pay the extra money and enjoy the car. also if your car detonates a bit on that cheap gas, thats a little extra wear on the motor. also takes a while for your computer to readjust after adding high octane back in there. there is a high octane table and low octane timing table in the ecu. and the ecu uses a formula for timing that involves a mixture of those two tables depending on how much knock is seen.

[sparkles]

^this

[Deimos]

sweet ride

[tylers88]

sweet ride

Thanks man.
Getting new front tires tomorrow so.............
http://www.gmfullsize.com/forum/picture.php?albumid=3435&pictureid=33810

[tylers88]

http://www.msrwheels.com/cms_images/wheels/med/msr_045_black_red_stripe_std_300.png

After taxes its getting 2 more new 255/45R18s and these wheels without the pinstripe I just can't find any pics. Specs on the wheels will be 18x8 +35 offset

[Stutz]

You can sell those stock rims for a decent amount

[Deimos]

I paid 367 for a front rim

[tylers88]

You can sell those stock rims for a decent amount

I wish my wheels are screwed, I'm getting wheels more out of need than want, they took a pretty hard hit in some road construction


I paid 367 for a front rim

Thats why I'm going aftermarket instead of stock, I wish I had the factory Alcoa's

[tylers88]

WOOHOO we couldn't get the deal she wanted on a Camry so we still have the Prix

[Batwood]

I paid 367 for a front rim

We got a set for $600. :)

Retards that had the car before actually rotated the tires. I lol'd.

[tylers88]

We got a set for $600. :)

Retards that had the car before actually rotated the tires. I lol'd.

LOL, I think we're finally going to get wheels next week.

[tylers88]

http://sphotos.xx.fbcdn.net/hphotos-prn1/532728_10150808427836121_507146120_9571723_1850472 729_n.jpg

Found out OE Wheels makes reproductions of the GXP wheels so we are going to get 2 to replace the messed up wheels for the front, then after vacation we are going to get 2 more of the x8s and a pair of 255/45s like we have on the front for the rear, woohoo finally going to have the wide wheels on all 4 corners. I'm also thinking of getting 1/4" slip on spacer just to bring them out a little more.

http://www.jegs.com/i/OE-Wheels/494/6809981/10002/-1?parentProductId=1695359 theres the link for the other wbody guys.

[tylers88]

did possibly the best mod to the car yet, owner delete the replacement is a SUPER clean 06 Trailblazer LT
https://sphotos-a.xx.fbcdn.net/hphotos-snc6/735202_10151263873881121_1907356007_n.jpg

[Drifte]

Didnt like the grand prix? I thought they were the nicest ones they made yet.

[tylers88]

Didnt like the grand prix? I thought they were the nicest ones they made yet.

I loved my 04(N/A 3800 GT) but the GXP was a pretty ragged car, started having major issues with only 78,000 miles on it.

[Drifte]

Good to know. I saw one with the 5.3 etc and thought that would be a good car for the old lady. Looked comfortable, and probably peppy.

[RandomHero]

I loved my 04(N/A 3800 GT) but the GXP was a pretty ragged car, started having major issues with only 78,000 miles on it.

So you bought a Trailblazer? The motors on the Trailblazers are tough, but the rest is crap. Doors are glued on and tend to crack.

[RedRocketZ28]

So you bought a Trailblazer? The motors on the Trailblazers are tough, but the rest is crap. Doors are glued on and tend to crack.

I wouldn't go as far as saying the rest of the vehicle is crap. Most of GM's line of vehicles isn't top notch build quality anyway, ha. I have owned a Trailblazer before and know several others who have or still own them. I had no problems with mine at all and it had almost 100k on it. My parents have owned their 02 Trailblazer since new, and it now has 207k on it with the original motor and transmission. You would never guess it had that many miles on it. It all depends on well you take care of a vehicle.

Tyler, I would say that's a worthwhile upgrade over the GXP for sure. Congrats.

[tylers88]

Good to know. I saw one with the 5.3 etc and thought that would be a good car for the old lady. Looked comfortable, and probably peppy.

I think it was more our car than all GXPs. Found out about 8months into ownership it was a hertz car when new. They are known for trans issues. Thanks Red we love this thing rides so much better than the gxp.

[Deimos]

Yes the trans is something we all know when we buy them. Mine was owned by a nice ciuple in fairfax until the zigged when the should have zagged in road construction.