LS4 Front-Drives 2005-2009 - Headers....but need 30 people.

Hey everyone, I called doug thorley headers on Monday about LS4 headers, they are interested in making them, but they want atleast 30 people and a LS4 powered car.

1...williamGT
2...silverGXP
3...themonteman
4...98GTcoupe
5...BuickRacer
6...707chance
7...sittingmongoose
8...corny40
9...Vectus
10..Crazyjoe
11..1 clean sup3r sport SSL33PER
12..06impalass
13..melss
14..GXPrix27
15..Neilownz
16..StealthV8
17..otherwisebusy
18..crashman
19..higsy
20..ohyeahjay
21..slomaro2
22..Aaron Provost
23..07GXPGray
24..AKP2K6SS
25..Blkls4
26..nirvana469
27..05CherryGXP
28..Greggb
29..westtexastiger
30..Desertr8der
31..1 badd gxp

You can add me.

Did they commit to a price?? I'm definitely interested but I'd like to know how much were looking at here.

Joe.

Did they commit to a price?? I'm definitely interested but I'd like to know how much were looking at here.

Joe.
there not sure yet, but i'll call them tomorrow.

Did they commit to a price?? I'm definitely interested but I'd like to know how much were looking at here.

Joe.

same here

I'm very interested based on price

Wow! 30 people?!? As much as I'd love to get headers, I don't see 30 people commiting. We've had a hard enough time getting just 10 people. Go ahead and count me in for shits and giggles. ;)

We'll see when there's a price.

I will put my car up for testing if they comp me the headers.

I'm in if the price isn't insane.

Thanks,
BJ

I'm interested

I will put my car up for testing if they comp me the headers.

I would also, if they weren't in California

I'm in if the price isn't insane.

Thanks,
BJ

Count on the price being insane.

i am in

Hello All,

I live in Yorba Linda which is 20 minutes directly west of Doug Thorley Headers in Corona. While I would offer up my car for the full mock up work, my car is leased and I do not plan on keeping it (in fact, I can't wait to turn it back in next May!) so I would not be one of the 30. In looking at other Thorley headers for other more popular (and that is the key word here-- "popular") LSx applications, IMO I can't see a pair for our cars coming in for less than $800 because of the limited LS4 market.

In all honesty, I think the more appropriate question for the group might be, "At what price point are you not interested in headers?" How many of you that don't plan on installing a good cam or keeping the car for the long term would be willing to spend almost a grand on a 10-15 HP gain?

That said, if it would help, I would be willing to offer DTH my car so they can put it on a rack and get a better look at what they're up against, or perhaps take some measurements, photos or what have you. Let me know via PM and we can exchange phone numbers if need be.

Just buy 30 sets and sell them lol.

if its under $900 i'm in, but don't see us getting 30 people hopefully if we get close they will think about it.

All depends on price.

I'm very interested but it depends on HP per dollar.

im very interested... based on price as well

Hey guys!!! I called them today about a price and HP gains....price between $550.00 to $600.00 (ceramic coated) and the G8 GT gains were 30hp, so we are expecting the same maybe..
The testing mule will get free headers.

This is posted in Grandprixforums.net as well

Even more interesting...

cheaper then i was thinkin it would have been.

anymore people interested in them?

Im in.

need atleast 21 more people.

need atleast 21 more people.

did you post anything on clubgp and gpona in the GXP sections? might be able to get a few people on there that arent on here.

did you post anything on clubgp and gpona in the GXP sections? might be able to get a few people on there that arent on here.

I'm a member on clubgp, but I hate it, it won't let me make a thread.

I'm a member on clubgp, but I hate it, it won't let me make a thread.

ill throw a thread up on both of the sites and link it to this one so maybe we can get more interest to get this to go through.

Some one post it on NAIOA

any sites that anyone is on make a thread lol...the more that know the better chance they will actually happen.

thanks:) only one I posted is this one and grandprixforums.net

i got one up one gpona and clubgp.

i got one up one gpona and clubgp.
Thanks, I hope it goes well.

Thanks, I hope it goes well.

as do i...i cant afford them right now but down the road i will be all over this.

If they're under $600, I'm in!

If they're under $600, I'm in!
He said $560.00 but $600.00 is the highest.

For $600 I can buy before consulting the wife, and possible get away with it!

Some one post it on NAIOA

Done.

i live 20 mins away from corna ca,ill do the testing for a free pair of headers,lol...

im in for sure

we got 11 now, thanks 1 clean sup3r sport....need atleast 19 more.

You can include me. As long as the price doesn't skyrocket.

Count me in Johnny Cakes!!

I'm in

im in for under $600 for sure

I'm in for that price... these are doug thorley right?

we got 11 now, thanks 1 clean sup3r sport....need atleast 19 more.

Anytime,and on a side note I don't mind loaning my car out for a week or two to help get us some headers

wow, just need atleast 14 more.....I'll call them up today again and see if they will take 20 people.

I'm in for that price... these are doug thorley right?
Yeppers

unfortunately I dont have the money as of this moment... I hope that the headers will include a new crossover/y-pipe.

Heck if they will do headers, crossover, and downpipe all together that would be sweet. I know most everyone has their Hogan DP already but I havent gotten one yet

Will the headers be ceramic coated at this price?

unfortunately I dont have the money as of this moment... I hope that the headers will include a new crossover/y-pipe.

Heck if they will do headers, crossover, and downpipe all together that would be sweet. I know most everyone has their Hogan DP already but I havent gotten one yet

Will the headers be ceramic coated at this price?
Yup, they will be ceramic coated.

ya i'm in forsure at that price, you can add me to the list

I'm in for that price! Add me to the list.



Thank you,
Barry

I'm in, if you haven't already counted me

I'm in

count me in also!!!

Count me in if the price isn't too crazy to Toronto, Canada. Could someone enlighten me as to who Doug Thorley is and his reputation. Dumb question but will the headers hook up to the Hogan Downpipe?

I called them, they will take 20 of us, they want me to get your infomation, name, address.
also your credit card number...they will not charge it until there shipped out to you.
you can contact Nick at 1-800-347-8664
my e-mail is: will_macleod13@hotmail.com
Thanks

Count me in if the price isn't too crazy to Toronto, Canada. Could someone enlighten me as to who Doug Thorley is and his reputation. Dumb question but will the headers hook up to the Hogan Downpipe?
I think they, will use the stock set up of studs.

I called them, they will take 20 of us, they want me to get your infomation, name, address. And for the person that wants free headers, you can see them anytime, there interested to look at the car.
my e-mail is: will_macleod13@hotmail.com
Thanks

never thought id see the day....kinda brings a tear to my eye lol....still got everything crossed that it all comes to a finished product.

I called them, they will take 20 of us, they want me to get your infomation, name, address.
also your credit card number...they will not charge it until there shipped out to you.
you can contact Nick at 1-800-347-8664
my e-mail is: will_macleod13@hotmail.com
Thanks

Pm'd you

Count me in if the price isn't too crazy to Toronto, Canada. Could someone enlighten me as to who Doug Thorley is and his reputation. Dumb question but will the headers hook up to the Hogan Downpipe?

I've seen good reviews of the tri-y truck headers.

Everyone!!! headers will happened, if you guys want them, now is the time.

Everyone!!! headers will happened, if you guys want them, now is the time.

would you be able to us guys who cant afford them right now a favor? ask them if they will continue to take orders down the road for them or if this is goin to be a one time run? thanks a lot!

had a few questions i know im better of just calling them but, are they going to be ceramic coated, will they be including gaskets and hardware, will they bolt to the factory down pipe, what is the expected production time, and are they warrantied at all? and a question for anyone whose done it. how difficult is it to pull the rear manifold off at your own home?

put me down as well

GREAT NEWS GUYS,I'm taking my IMP in tomarrow after work....ill fill you guys in withh more info later....

had a few questions i know im better of just calling them but, are they going to be ceramic coated, will they bolt to the factory down pipe, what is the expected production time, and are they warrantied at all? and a question for anyone whose done it. how difficult is it to pull the rear manifold off at your own home?

I can answer only one question of yours from reading this entire thread... They will be ceramic coated.

I'm also curious to know if they will continue to make an additional lot to sell after these first ones are sold.

GREAT NEWS GUYS,I'm taking my IMP in tomarrow after work....ill fill you guys in withh more info later....
sweet, I need everyones INFO!!! Name Address and phone number.

sign me up too

i need to know if they include crossover and if they will bolt right on

sweet, I need everyones INFO!!! Name Address and phone number.

Any updates on this ? Also who are we sending are info to, not that i dont trust you but im little sketchy on that. Let me know man

Thanks

Greg

sweet, I need everyones INFO!!! Name Address and phone number.

Any updates on this ? Also who are we sending are info to, not that i dont trust you but im little sketchy on that. Let me know man

Thanks

Greg

that guy ^^^^

that guy ^^^^

i just sent my info to him so... crossing fingers....

Didn't see my name on the list on page 1 so I want to make sure you're counting me as well.

Thanks,
BJ

rear manifold comes off pretty easy if you just remove the coil pack assembly off the valve cover.

mark

As others have asked- will this be an item people can regularly order after this group buy (directed towards whoever is in direct contact with them).

Also, how far down will these headers go? Will they include the downpipe to the catback like most of the other Wbody headers?

Hopefully these sets will include headers,crossover pipe, and a downpipe with your choice of cat/no cat. Also, I assume these won't be stainless steel? Good to see we might finally get some more mods for these cars!

more info and ill throw out my credit card number to them

I spoke with nick over the phone about 3 hrs ago,and tomarrow I will be dropping off my imp about 330pm...he told me it would be a at least 2 weeks to work out the kinks,but more then likely have a similar setup already.

I will ask him if they will bolt right on to a stock setup(mine)or if they will be welded on.I will also ask if it will bolt right up to thoses who have hogan dp....

And ill post more info,as the first set of headers will be built for my IMP...

I have the contact info that some of you sent me, once I get all the info from other members, I will send it to Nick at Doug Thorley.

Please send me your Name, Address and phone number.

Im all for giving my info, however can I hold off on the credit card. I know you posted they wont charge until they ship but im strapped for cash as it is. Can I be contacted for the CC when they are done and ready just so I know when I put the charge on?

pm sent

the people PM'd me, I add you to the list I will be sending to nick, but I need more people thats on the list on the first post to send me your contact info.

Thanks

were you able to find out if this is a one time thing or if they will continue to make them down the road? thanks.

I would imagine a group order like this will allow them to sell hem for less than just selling one individual set.

That being said, they will have the jig to make more. So they will atleast be available.

Assuming they do it after seeing under the hood of the test mule.

not backing out i am just waiting on the vital info like if they bolt on, if they include a crossover and if its even possible lol

They said they will make more, and I'm waiting on hearing if it will bolt up to my Hogan DP.

I still need more contact info, I only have 14 of you out of 24.

I need:
SilverGXP
Vectus
Crazyjoe
centexss
melss
crashman
sittingmongoose
otherwiseguy

INFO....Name address and phone number.....PM me

Thanks

come on people they just need the contact info and they will call you to get the card number when they are ready to go.

Done, sorry i took so long. And yes the number is real haha. I get lots of people trying to call me out saying its fake. ends with 123.

Done, sorry i took so long. And yes the number is real haha. I get lots of people trying to call me out saying its fake. ends with 123.
Thanks, I added it to the list.....lol, I was like what number is that.

This is really making me wish I still had my Monte, that and every time I try to pass someone on the road. Heck the only thing I pass now-a-days are the gas stations!

I got the PM's.. just need.
SilverGXP
Crashman
sittingmongoose
otherwiseguy

im intrested.. just gotta see the finished product...at least a few details..

I'm interested in the dyno results. Any guesses on the gains?

my car just went to the shop lol, i need to wait till the 28th of the month, labor work is going to be anywhere from 1200-2400 so depending on how much that is i can buy the headers, sorry but i have to play the waiting game on this one :(

my car just went to the shop lol, i need to wait till the 28th of the month, labor work is going to be anywhere from 1200-2400 so depending on how much that is i can buy the headers, sorry but i have to play the waiting game on this one :(

Header install would be cake when doing the heads!!!!!!:D:nod:

Glad to see something good finally happening for these cars. One thing you guys need to realize is that for that price i would assume they are mild steel headers (if i'm wrong then you guys should be reported for robbing the guy :) ). Mild steel headers will rust eventually even with a good ceramic coating.

I am interested. I would like a little more info, i.e. clearance for the fans, etc. Ceramic coating is nice, but only with stainless steel tubing, otherwise I'll pass. Stainless steel without coating is fine with me. Thanks!

After they get the jigs made I would think they could do 304 ss or whatever people want.

They told me ceramic coated.....Sittingmongoose I just need contact info....they won't be ready for awhile...

But I still need SilverGXP, Crashman, otherwiseguy INFO!!!! Do you want headers? Now is the time...I only have 20ppl on the list and they want to see atleast 25.

Thanks, also sending PM's.

Sign me up and tell me who to send my information to. Does anyone know what the possible price of an install would be on these? Is there a tentative date on this? 3-4 months? And does the 550-600$ include shipping?

Let's hope it isn't a bitch. Somebody could do a write up when they get them. Not me since there will probably be at least 3 ft of snow by then and it will be put away for the winter.

i'll have it on when i get it so i'll let you all know about cost to put on, but of course it'll vary from place to place.

I'm glad this is happening. I've grown fond of my car, and I'm just almost at the point where I can trade it if I wanted to. But I want to keep her for a while. I'm thinking these headers, a cutout, and a tune, and she'll be a whole new animal. Maybe I'll be able to run with the LT1's. :P

Sign me up and tell me who to send my information to. Does anyone know what the possible price of an install would be on these? Is there a tentative date on this? 3-4 months? And does the 550-600$ include shipping?
Hey, I'm doing the phone calls and sign up's.
Your on the list, we will find out next week if the company will do it, they are very interested in the LS4 powered cars, one of the members (1 clean sup3r sport) is dropping his car off next week.

I hope they come through, that would suck if they decide not to do it. I'm curious to know a time frame on completion as well, a few weeks or a few months??? Hopefully they'll tell you more next week.

Joe.

add me in...unless the price goes up...or the materials are cheap

Chad Jackson
5410 W. Cisna Rd
Bartonville, IL 61607
309-453-6328

pm sent, need to know type of material, time frame, hp, and final price.

Wow 25 people, impressive. All the other times people have tried to get headers made everyone bitches out and doesn't want to put the money out up front. Nice to see people are actually putting their money where there mouths are for once. There could have been headers a long time ago if people actually followed through with their constant header complaints. Good luck getting your 30 and I look forward to seeing how they turn out.

I know everyone on the Tacoma forums uses Doug Thorley headers and love them.

ya but i dont know how much my car will be, so i need to wait and see the damage if its bad than i am not gunna be able to get them for a long time :(

Sigh. Pull my name, sir. The wife apparently opened my laptop up, and I got bitched at for wanting to spend 600$ on myself so close to Christmas. Sorry. :( The kids don't need a new damn FaceBox or Playstation Journal or whatever..

Sigh. Pull my name, sir. The wife apparently opened my laptop up, and I got bitched at for wanting to spend 600$ on myself so close to Christmas. Sorry. :( The kids don't need a new damn FaceBox or Playstation Journal or whatever..

=/ sorry to hear that, thats why you put a password on it =P.

okay I'll pull your name out. still got 25 people.

So any word if these include a crossover? And if they bolt up to Hogan DP's?

The wife reluctantly agreed to let me get 'em!


Also, I'd assume we'll need a dyno tune for these? I don't think they'll work well with a can tune or stock tune.

For those of you whose wives may be skepticle, Christmas is coming and these would make one damn nice gift !! :secret2:

Hella tempting to do...hmm. I really want to do it but I'm on the verge of getting rid of her for a C5/G35/IS350/CTS-V/335i. Also under the 100k warranty still if I do keep it...thats a hard one.

hell if I didn't just blow the tranny I'd be in...I might still be depending on funds since i have to yank the motor... not like 600 could hurt the credit card anymroe than what I'm about to add to it lol.

damn dave, 3 trannies in 20k miles?

if you need a hand i can help ya if im not working

im interested sir, the price isnt 2 bad at all. count me in

mix you killed your car too? lol

So how many do we have now?

So how many do we have now?

Hopefully enough, I got the green light from the wife for these.

So how many do we have now?
We Have 26 Now, thats still including sittingmongoose....I'm going to call Nick tomorrow.
I hope we have the green light I'm 99.9% sure this will happen.

Damn wives getting in the way of our headers!

this bites, anyone wanna lend me 600? i am thinking i will see some crazy gains from it, considering it will be the only thing still kinda stock. It might be my next bottleneck.

i am thinking i will see some crazy gains from it, considering it will be the only thing still kinda stock. It might be my next bottleneck.

I wouldn't think you'd get much more gain from it than anyone else on here. Maybe if you had a H/C/I setup or something. Not to mention they will replace one, if not two of your mods.

I wouldn't think you'd get much more gain from it than anyone else on here. Maybe if you had a H/C/I setup or something. Not to mention they will replace one, if not two of your mods.



He's doing heads and a cam, and doing a more aggressive port to his intake.

Im watching this unfold just to see if they will collect into a single downpipe or will be tubed? making TRUE dual...for the money it wouldnt benefit me much more to add another 10-15whp APPROXIMATE on top of the turbo gains up top...it would prob give more torque for us fwd's....this is exciting though...

i wouldn't think you'd get much more gain from it than anyone else on here. Maybe if you had a h/c/i setup or something. Not to mention they will replace one, if not two of your mods.

h/c/i?

H/C/I

Heads/Cam/Intake

Nick at doug thorley headers relly need to look at an LS4 powered car, I tired PMing 1 clean sup3r sport, he was suppose to be the project car.....if you want free headers this is the time.....anyone else in California?

i clean ss isn't coming through?!

Someone step up!!!!!!!

Did he give you his phone number?

Mike your out there lets get this done!!

WTF?!?!?! Who flakes on the opportunity for free headers???

Mike your out there lets get this done!!


FOR THE LOVE OF GOD MAN, WE HAVE HOPE! LETS NOT CRUSH IT!....:bang:

h/c/i?

I am doing heads cam and intake......

if i had one i'd be in i've never seen a modded ls4 till you guys. good job.

I don't have his info, He was last online on 18th around 8pm.....anyone close to Corna California?

get ready for a BIG gain in power.

get ready for a BIG gain in power.

Don't get our hopes up!

Don't get our hopes up!

Where do you think all the horsepower is hidding?......lol. I have an old car craft where they added headers to a stock SSR 5.3 and gained 10hp.

BTW, they added a SUPER mild LPE GT2-3 cam and gained 55 hp over the dinky truck cam.

Guys, I have to step out of this one. I'm making some changes to my Turbo set up over the winter and these will not work.

I am doing heads cam and intake......

Of course you are... but you missed my point; what I said was your power gains should be just about the same as everyone else in here- speaking of the mods you already have that are listed in your sig. I was saying the people who would get the real 'crazy gains' you mentioned would be those with major airflow mods- ie H/C/I.

Im watching this unfold just to see if they will collect into a single downpipe or will be tubed? making TRUE dual

It would be cool if they did a setup like the pacesetter headers for the 3800 W-bodys, where both banks come down in individual tubes, then collect into a single outlet pipe with a Y at the end. That way they could make it bolt up to the stock catback and such, but it would also be easy to run true duals if someone wanted to.


Another question about the headers- has there any talk about sizes yet (ie primary, crossover, and outlet)?

Of course you are... but you missed my point; what I said was your power gains should be just about the same as everyone else in here- speaking of the mods you already have that are listed in your sig. I was saying the people who would get the real 'crazy gains' you mentioned would be those with major airflow mods- ie H/C/I.




i am sorry but, are you retarded? i am doing those mods to my car so my only restriction will be my exhaust manifold.

i am sorry but, are you retarded? i am doing those mods to my car so my only restriction will be my exhaust manifold.


I'm thinking the same. Aren't you getting heads/cam/intake done rather soon? Well before the headers will ever be made?

yes, lol infact the heads arrived at my house today and the cam arrives tomorrow

WilliamGT and everyone,

After some thought I would be willing to step in for cleanSuperSport. My phone number is 714-401-2873 and my email is morgan.g.hayden@gmail.com . As I said on an earlier page, I live 20 minutes directly west of Thorley's shop; they are 16 miles from me and we are both very close to the 91 Freeway. William, if you could please forward me Nick's information (phone number or what have you) I would appreciate it; I will give him a call tomorrow morning when I get to my office and report back to the group at large. Thanks very much!

Morgan

Guys, I have to step out of this one. I'm making some changes to my Turbo set up over the winter and these will not work.

awe were losing people left and right. Hope this all still works out. Hope your changes go as planned. I imagine for a more hp increase?

WilliamGT and everyone,

After some thought I would be willing to step in for cleanSuperSport. My phone number is 714-401-2873 and my email is morgan.g.hayden@gmail.com . As I said on an earlier page, I live 20 minutes directly west of Thorley's shop; they are 16 miles from me and we are both very close to the 91 Freeway. William, if you could please forward me Nick's information (phone number or what have you) I would appreciate it; I will give him a call tomorrow morning when I get to my office and report back to the group at large. Thanks very much!

Morgan

Thanks Morgan.....Pm'ed you.
BTW they will be free headers for you.....ceramic coated, hopfully new cross over pipe, make sure it will bolt on to the factory down pipe and hogan DP

Might not be possible since that is where the space is tight at the collector.

William, I got your PM with Nick's contact info and text messaged you.

In light of the comments above, does anyone have a spare Hogan downpipe laying around that I could take with me so Thorley can have both a stock downpipe (which is what I have on my car) and a Hogan DP on hand to work with? If you do, please PM me. Thanks!

Might not be possible since that is where the space is tight at the collector.

saying that the headers might not fit?

Just saying they might need the room to make a proper collector. Getting into a box with the design to make it easily bolt up with the stock system isn't a good idea. Just need to find a place for the o2. Could even use a wiring extension and put it near the front bank.

I guess will wait and see, I hope its all good.

UPDATE!! BuickRacer is taking his 07 Impala SS to Doug Thorley headers shop on Tuesday to have the car looked at, if all is good the week after they will be working on the car.

Thanks

Guys,

I spoke with Nick T. (the R&D guy at Thorley Headers) today-- as it so happens, we both live just 10 minutes from each other on opposite ends of the same city. Due to our respective schedules, Nick and I have set up a time where I will drop off my vehicle at his home next Monday night 10/26 around 6PM-ish or so, then he will drive the car to their shop the following morning. I will then pick it up from him afterward, because...

...Nick & Co first need to look the vehicle over to see if what we're after is even possible. If it looks good, I will take the vehicle back to him AFTER the SEMA show which runs from November 1st through the 7th, as Nick and his crew are scheduled to be in Las Vegas for that. If the visual evaluation goes well, Nick anticipated about two weeks worth of work on the outside on my car. As an aside, in my correspondence with Nick he is very enthusiastic about the project; in fact, he sounded relieved when I called to tell him I could provide a "backup car" if he was still interested, and he very much was!

To answer a previous question, we have had no technical discussions whatsoever with regard to primary sizes or anything of that nature, nor would I anticipate that unless we have something viable in the works and they can pull it off.

'Till next time,
Morgan Hayden

sounds good, if this doesn't go through i may just cry

sounds good, if this doesn't go through i may just cry

^^^x2

sounds good, if this doesn't go through i may just cry

I'll just do the ported intake faster lol

Guys, Nick from Dougs has BuickRacers car......hope for good news.

I'm in.

I'm in.
Hey, if you don't mine to pm me your name address and phone number.
Nick from the shop needs it, for our 30 people list.
thanks

I just retrieved my car from Nick at Thorley and wanted to provide a preliminary report:

Nick drove the car today to their shop...from what he tells me, the general reaction from "the crew" was along the lines of, "Umm...what's so special about this car?" Then he pulled the hood release. "OOOOhhhhh...." :)

The car spent the day with the hood open. The initial evaluation is that the project is not impossible, but it will require quite a bit of work due to the lack of room. Ideally the goal is to run two downpipes into a single merged collector underneath, with the front following a similar path the OEM crossover has now. I will be returning the car to Nick the Monday following the SEMA show.

Until next time,
Morgan

Coolio. Time to wait for a couple/three weeks.

sweet

sweet, so my hogan DP is going to be useless? But I hope it will happened....header:)

I'm sure someone might be interested in buying it. Damn you could go with like a 2x3 to 4 inch exhaust collector or true 2.5-3 duals... should be plenty for just a 5.3L.

if they are going to run two downpipes i will happily get rid of my w-bodystore downpipe.

but it should bolt on stock and magnaflow catback?

Is the "quite a bit of work" going to add to the projected cost?

Doubt it. Just might need a second flex joint and a little more pipe, but shouldn't be any real complex bends. I would guess a slip joint before the cat would be easiest since the some people might want to pass inspections. Wouldn't kill me if it bolted to the cat back though. They will need to put some sort of connection in there to install it. Maybe a ball and socket in between the front+crossover and the rear+downpipe...

This might be beyond Nick's ability to predict, but is his work going to have noticable impact on emissions when the headers and exhaust are rigged up? Fucking states with yearly emissions inspections!

You'll become a pro at removing/installing the stock ones. I'll take an offroad version that bolts to the cat back k thx.

I just go to a different part of town, and they dont give a damn. lol

if they do the downpipe setup ill take the offroad version also, cats are gay i like my catless hogan

At this point it's all conjecture until they take my car apart. They are contemplating two sizes of primaries, but at this point their main focus is getting ready for SEMA in Las Vegas as they are leaving tomorrow to go set up. I met up with Nick and his dad last night, and I have basically given Nick an open time frame with my car so they don't have to feel like they're rushed.

At this point it's all conjecture until they take my car apart. They are contemplating two sizes of primaries, but at this point their main focus is getting ready for SEMA in Las Vegas as they are leaving tomorrow to go set up. I met up with Nick and his dad last night, and I have basically given Nick an open time frame with my car so they don't have to feel like they're rushed.

What sizes are they contemplating? 1 5/8" and 1 3/4"?

I'm in been looking for headers for my '08 ss impala

Just pm williamGT your info.

Just pm williamGT your info.
Yep, I'm in the talks with Nick at Doug Thorley Headers.
If your interested just PM me your Name, Address and Phone number.

Anything is better then nothing and I could care less about my down pipe as long as the headers will include a new one. Keep up the great work Will and buick racer. After I get my LS6 intake installed, I'll be quick to make the purchuse even if there a grand, but first things first, and thats opening up the intake side of this engine. If you want my info I can give it to you but I won't be ready for them till after Christmas.

What sizes are they contemplating? 1 5/8" and 1 3/4"?
Yes, those are the sizes. While 1.625" would still work well, they want to try 1.750" first.

I'm not an expert but I'm thinking the 1 3/4" will make more power. Wait, what mods does your car have? The 1 5/8" might work better on a stock car.

1-5/8 will be enough for just a 5.3. I think you lose back pressure or something if you go bigger (1-3/4 or 1-7/8) with the smaller v8s. Might not be bad since it will be y'd down to a single 3 rather quickly.

we have reach our 30 people goal:)

i have a question?well a couple.. would the headers include the downpipe?do they offer a ceramic coating ?and how hard would it be to install?

The headers aren't even made yet. Have to wait a couple weeks to see.

I want the ceramic coating

according to earlier posts for the 550-00 price they will be ceramicly coated

Yea!!

1-5/8 will be enough for just a 5.3. I think you lose back pressure or something if you go bigger (1-3/4 or 1-7/8) with the smaller v8s. Might not be bad since it will be y'd down to a single 3 rather quickly.

like I said, 1 5/8 for a stock car but 1 3/4 for a built one.

I have a question? How hard would they be to install?
It will depend upon your level of mechanical aptitude. I've changed out headers a number of times and I can tell you from experience it's really nice to have a rack available, as sometimes headers have to be fed in from the bottom.

Well I have a friend of mine at Chevrolet dealer service mech wont be a problem to install.

It will depend upon your level of mechanical aptitude. I've changed out headers a number of times and I can tell you from experience it's really nice to have a rack available, as sometimes headers have to be fed in from the bottom.

Ah the beauty of being the military. We have "Auto skills" shops on all bases, many lifts different style, torches, paint booths, tools, air hoses to every lift pretty much anything you an imagine in a real auto shop..

the front one will be cake, the back one will take some time.

Ah the beauty of being the military. We have "Auto skills" shops on all bases, many lifts different style, torches, paint booths, tools, air hoses to every lift pretty much anything you an imagine in a real auto shop..

That's funny, every military tech we've hired at my dealer didn't have a clue to what they were doing. They were great for hands on things, but diagnosis and electrical they were lost. No offense to military mechanics though.

That's funny, every military tech we've hired at my dealer didn't have a clue to what they were doing. They were great for hands on things, but diagnosis and electrical they were lost. No offense to military mechanics though.

That's funny, your acting like Dealer techs have a clue about what they're doing.:D
Tate

That's funny, your acting like Dealer techs have a clue about what they're doing.:D
Tate

haha =) Xs 2!

i cant wait to see the finished product.im like so in..:D

The stock rear manifold looks like a big restriction. Look at 0:56 and see for yourself. I don't like the way the front manifold is expected to merge.


http://www.youtube.com/watch?v=j2VJR8me-jw

Very nice video, JDMC5. Very nice indeed.
Tate

Very nice video, JDMC5. Very nice indeed.
Tate

Hes not OP but yea awesome vid. OP is uhhh Mixer(something) haha sorry

SSweet video!

That's Mix's video he made when he brought his LS4 back to life after a 150+mph oops lol.

That's funny, your acting like Dealer techs have a clue about what they're doing.:D
Tate

Not all of them do, I'll give you that. I won't even go to a local Chevy dealer around here anymore.

But I've met more clueless military mechanics than competent ones. I live in Killeen, right next to Fort Hood.

That's Mix's video he made when he brought his LS4 back to life after a 150+mph oops lol.


what was his oops?

what was his oops?

ended up bending some valves, i think if you go to the original url he list some notes on the info. BTW wasnt buickracer supposed to drop his car yesterday? that happen?

No it's after sema.

That's funny, every military tech we've hired at my dealer didn't have a clue to what they were doing. They were great for hands on things, but diagnosis and electrical they were lost. No offense to military mechanics though.

Whats even funnier is I'm not a military tech at all. Its an Auto Hobby shop for anyone on the base to use. You just pay 7 bucks per hour. Its great. So all us shadetree MX's can use great facilities.

As far as military techs go.. Im a Vehicle Operator in the AF, bascially I drive anything that has wheels, an military techs bandaide our shit back together so I know how to feel, but in there defense they get no funding to fix shit correctly.

Anyways hope that clears it up.

Greg

ended up bending some valves, i think if you go to the original url he list some notes on the info. BTW wasnt buickracer supposed to drop his car yesterday? that happen?

Yeah on November 9th he drops it off to Nick.

William, I have an '06 Impala SS. I want some headers, so I'll PM with my info when I get home tonight. Name, address, and phone number, right?

There one more on the list. Looks like we are finally going this done

Not all of them do, I'll give you that. I won't even go to a local Chevy dealer around here anymore.

But I've met more clueless military mechanics than competent ones. I live in Killeen, right next to Fort Hood.


That's why there all ARMY mechanics, not Air Force mechanics.:punch: I kid, I kid...
Tate

oh... dont know why i thought that was last week... Lack of sleep will make people think its been a week over the weekend haha or im just excited, hah.

William, I have an '06 Impala SS. I want some headers, so I'll PM with my info when I get home tonight. Name, address, and phone number, right?
Yup, I got your PM.
Tahnks

Isn't today the day ??? Hopefully all goes well !!!:thumb:

Isn't today the day ??? Hopefully all goes well !!!:thumb:
I talked to Nick at doug thorleys today, he said he just came back from SEMA, but they said they will be working on the car very soon, and still thinking about runing 2 downpipes.....he said it will be a tough job to do.

I hope he is opptimistic about getting positive results. I hope with 2 downpipes it won't be that difficult to join into my Magnaflow catback. I wonder how dificult it would be to convert the mf into a dual exhaust.

If we had a much more aggressive cam, then okay, but as it stands....meh. I'd love to try a 218/224 at 112 LSA in this motor. Again, plans call for a merged collector off of two DPs, but room is a factor.

I was thinking about this over the weekend...how many of the 30-odd or so of you that have gotten on board with this project are heavily modded (meaning cam, heads, intake and/or a combination thereof) OR will go that route if headers come to pass? I know there's one out there that is already pretty radical.

I think more people will want to after the factory warranty expires and the used ones get less expensive. Making it easier for people to know what is worth the money is the hard part. Putting 5 grand into a vehicle that's worth 10 isn't practical for some people.

The only things I'm missing are ported heads and a cam, which I would only do with headers. This will give me the opportunity to do so down the road. my goal from day one has been a 12 second, 325-375 whp 4 door dd. Hopefully this will pave the way.
I'll probably break more crap before then, though (I still need to work on the tune and figure out where my missing HP has gone--nothing to do with the tune though.)

BJ

it these headers work out I'll think about a cam in the future

hopfully these headers will make a cam swap worth it, thats pretty much all i will be missing after this.

they will, however the stock intake (even ported) is going to be a big restriction as well.

my intake is out for stage 2 porting as we speak. so ya there is more planned in the future. RR's, tune, beefed up tranny and to top it off an inferno hood....

Any updates?

Are they going to produce these or are these just going to be a one off thing?

Any updates?

Are they going to produce these or are these just going to be a one off thing?

http://www.ls1tech.com/forums/ls4-front-drives-2005-2009/1204369-thorley-header-project-update.html