Post your pics of your non-Bonneville, and If you have video footage, we want to see it. Videos must be hosted on external web space and hotlinked to PontiacBonnevilleClub.com. Also discuss mechanical problems regarding your non-bonneville (this is not another lounge, but posts don't count, random car vids not of your cars should be in the lounge)
harofreak00 wrote:Why don't OEM or any aftermarket 3800 headers have that?
Im not saying that the heat expansion statement is gospel but I don't think that a 3800 makes as much heat as a 5.3L.
Im sure there is a very good reason that the flex is there, they wouldn't have been like 'Lets just put a flex here for no reason!'. Im sure it makes install easier in some way. Thorley is a very reputable company and have been around for a very long time.
00Beast wrote:Less off-topic than Lane's Heated Steering wheel, but yeah, back to the topic.
My guess is that it's used to mitigate warranty risk. Spend a few bucks on each set with the flex, save a bunch of warranty replacement sets.
WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers 2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
harofreak00 wrote:Both banks attach independantly on my Pacesetters.
But they collect infront of the flex section. I can't say I'm a fan of the thorely design, as the main pipe moves, it will require the front bank to flex more than the rear, either twisting the main exhaust slightly, or putting uneven stress between banks.
Assuming the rear bank has a flex section between the header and the collector. It's not in the pix, but that's what I was assuming.
Jason Z - Exposed Autos
2001 BMW 330i- Titanium Silver - Sport Package - 3 Pedals - Koni Yellow/H&R Sport 2006 Volkswagen GTI - (gone) Tornado Red - DSG, Stage II~280hp/325tq 1993 Pontiac Bonneville - (gone) Purple Pearl H4U/SLE. Loud
Found out that the flex tube is basically just to aide in installation, here are a couple vids of the aftermath:
Last edited by crazyjoe on Sat Apr 03, 2010 8:50 pm, edited 1 time in total.
2005 Pontiac Grand Prix GXP, 5.3L LS4 V8
SOLD--->2002 WS6, cammed, stalled, spray 11.152@122.224mph, CPT Pro-Race 4L60E Tuned by Bluecat Rides, past and present
Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
2005 Pontiac Grand Prix GXP, 5.3L LS4 V8
SOLD--->2002 WS6, cammed, stalled, spray 11.152@122.224mph, CPT Pro-Race 4L60E Tuned by Bluecat Rides, past and present
Hopefully it's going to the tuner in the morning as well as welding the factory cat-back back up, straight headers are a headache!!!
2005 Pontiac Grand Prix GXP, 5.3L LS4 V8
SOLD--->2002 WS6, cammed, stalled, spray 11.152@122.224mph, CPT Pro-Race 4L60E Tuned by Bluecat Rides, past and present
So Beef the trans up and then turn off the TQ management and give beastie a tune. Now that you have uncorked that motor i wanna see what that engine will actually do
06 Grand Prix GXP Diablosport Trinity , No DOD , Transgo SK , MSD 8.5MM Wires , NGK TR6IX plugs , LED's , Optima RedTop , Projector Retro , 3K Fogs , 20" Led Driving light , K&N CAI w/ Volant oversize air filter , Raybestos Brakes 94 SSEi NGK Plugs , Blue Streak Wires , Pulled Maf screen , Custom Exhaust , Raybestos Brakes , 12" MTX Audio sub and amp , Piaa Plasma Ion Foglight Housings , HIR His' and Lows' , Tinted Tails
1999supercharged wrote:anyway i can get in on the group buy? lol just bought an 05 gxp
Grand Prix GXP or Bonneville GXP? The Bonne GXP doesn't have the LS4 so they won't work if thats what you bought.
Not to mention the Northstar's crossover pipe doesn't go over the engine trans like the 3800, LS4, etc... It is crammed and flattened into a slight void under the engine/trans in the subframe. So even running some aftermarket units (if they were even made), would create some packaging issues... :D
Anyway, >$1,000 for a FWD set of V8 headers isn't badm considering most sets of LSx long tube headers for F-Body's, Vette's, and particularly GTO's hover in that range too!
Retired Bonneville Owner and former GM Tech: 2004 Pontiac Bonneville GXP: Black/Ebony *SOLD*
Daily Drivers: 2019 Chrysler Pacifica Limited: Mommy's new RGC 2015 Chrysler Town & Country Limited Platinum: Kids new RGC 2011 Camaro SS 2009 Pontiac G8 GT: L76, Sport Red Metallic 2004 GMC Sierra 2500HD: Victory Red - 8.1L Big Block and Allison 2003 Chevrolet Suburban 2500: Doeskin Tan - 8.1L Big Block... RIP 1999 Chevrolet Suburban: Sunset Gold Metallic - RIP
