LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

anybody see these headers

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Old 10-09-2009, 06:50 PM
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Default anybody see these headers

found these check out link
http://www.andysautosport.com/chevro...g00209912.html
Old 10-09-2009, 07:06 PM
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I call FAKE!!!! haha actually id be happy to order thous up! if i knew they worked for GXP. You would think someone wouldve posted up about these awhile back???
Old 10-09-2009, 08:55 PM
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Take the part # and search it on Doug Thorley's web site...

http://www.dougthorleyheaders.com/pr...productID/1020

Its listed as for as SANDRAIL... not any production vehicle
Old 10-09-2009, 08:59 PM
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Headers are made out of ceramic or stainless steel? I thought it was mild steel or stainless and ceramic was used in coatings. Lol
Old 10-09-2009, 09:06 PM
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So sandrail means where sol? lol
Old 10-09-2009, 09:38 PM
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My brother has Doug Thorley header on his G8 GT, with great results. Jus tran 12.6 @ 108 tonight at Dallas Raceway with just intake, headers, cat back, and a tune.

edit - just checked Dough Thorleys website, only 5.3L header listed was for Avalanche.
Old 10-10-2009, 08:21 AM
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if i wasnt about to drop 3500 on my car i would try them out.
Old 10-10-2009, 09:33 AM
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So will they fit??? and work for the LS4
Old 10-10-2009, 12:47 PM
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i called they say those are for ls1 cars but are shorther and fit our cars so id say yes they supposedly can be modded for our cars numbers 800) 347-8664
Old 10-10-2009, 01:20 PM
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what would we need to mod.. if they supposable fit our car..
Old 10-10-2009, 02:00 PM
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I'd imagine the crossover and where the manifolds merge would need to be custom made.
Old 10-10-2009, 08:25 PM
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I also found these supposidly for the GXP.

http://www.andysautosport.com/pontia.../doug_thorley/


Looks like a lot of custom work.

-Mike
Old 10-10-2009, 09:52 PM
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Maybe someone can contact and get pics of both headers. Let us know.
Old 10-11-2009, 12:22 AM
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I live close by them. I will talk to them and see if they will fab some up for us.
Old 10-11-2009, 09:05 AM
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Originally Posted by ChefChub
I live close by them. I will talk to them and see if they will fab some up for us.

Keep us posted, this looks halfway promising! :tries not to get hopes up:

Joe.
Old 10-11-2009, 10:29 AM
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You would think if he makes a header for a "Smart Car" that making us one wouldn't be a problem:

http://dougthorleyheaders.com/products/sfID1/9

THY-801-C
SMART CAR HEADER (RACE ONLY)
List Price: $338.00


THATS RIGHT, A HEADER FOR THE NEW SMART CAR!
A DIRECT BOLT ON FOR THIS CAR THAT ADDS AN AMAZING AMOUNT OF HORSEPOWER (6) TO THE CAR. CERAMIC COATING GUARANTEES THAT THE ENGINE HEAT WILL NOT PENETRATE THE ENGINE COVER AND ENTER THE DRIVERS AREA. A MUST FOR ANY SMART CAR ENTHUSIAST....
Old 10-11-2009, 11:00 AM
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Originally Posted by supercatxr7
You would think if he makes a header for a "Smart Car" that making us one wouldn't be a problem:

http://dougthorleyheaders.com/products/sfID1/9

THY-801-C
SMART CAR HEADER (RACE ONLY)
List Price: $338.00


THATS RIGHT, A HEADER FOR THE NEW SMART CAR!
A DIRECT BOLT ON FOR THIS CAR THAT ADDS AN AMAZING AMOUNT OF HORSEPOWER (6) TO THE CAR. CERAMIC COATING GUARANTEES THAT THE ENGINE HEAT WILL NOT PENETRATE THE ENGINE COVER AND ENTER THE DRIVERS AREA. A MUST FOR ANY SMART CAR ENTHUSIAST....
lol that is some funny ****....there is prolly a bigger aftermarket for the smart cars then the LS4
Old 10-11-2009, 12:37 PM
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Not to mention it's a lot easier to make one for the Smart car!
Old 10-11-2009, 01:37 PM
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Originally Posted by supercatxr7
You would think if he makes a header for a "Smart Car" that making us one wouldn't be a problem:

http://dougthorleyheaders.com/products/sfID1/9

THY-801-C
SMART CAR HEADER (RACE ONLY)
List Price: $338.00


THATS RIGHT, A HEADER FOR THE NEW SMART CAR!
A DIRECT BOLT ON FOR THIS CAR THAT ADDS AN AMAZING AMOUNT OF HORSEPOWER (6) TO THE CAR. CERAMIC COATING GUARANTEES THAT THE ENGINE HEAT WILL NOT PENETRATE THE ENGINE COVER AND ENTER THE DRIVERS AREA. A MUST FOR ANY SMART CAR ENTHUSIAST....
HAHAHA... "SMART CAR ENTHUSIAST" don't really know what to say to that
Old 10-11-2009, 03:01 PM
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dude i want me some headers! and maybe a smart car with a turbo lol



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