Notices
GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

check out the new OBX headers

Thread Tools
 
Search this Thread
 
Old 06-30-2009, 07:29 PM
  #11  
TECH Apprentice
iTrader: (4)
 
007gmc's Avatar
 
Join Date: Jan 2007
Location: memphis tn
Posts: 309
Likes: 0
Received 0 Likes on 0 Posts
Default

anyone know if these are any different?

http://cgi.ebay.com/ebaymotors/OBX-H...5%7C240%3A1318
Old 06-30-2009, 07:34 PM
  #12  
TECH Resident
 
Join Date: Aug 2008
Location: East of the east bay CA
Posts: 842
Likes: 0
Received 0 Likes on 0 Posts
Default

I love my obx's the hump doesn't bother me one bit, the fit and finish is great IMO.
Old 06-30-2009, 09:31 PM
  #13  
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
1slow01Z71's Avatar
 
Join Date: Oct 2004
Location: Austin, TX
Posts: 23,204
Likes: 0
Received 4 Likes on 4 Posts
Default

Has anybody had any problems with the resonators? Im wondering how much they will quieten down the exhaust. LTs with no cats and a corsa are loud as hell and get a little rasp in them, Im wondering if the resonators cut the sound down as much as a set of real cats.
Old 06-30-2009, 09:31 PM
  #14  
TECH Resident
iTrader: (24)
 
SuperchargedSS's Avatar
 
Join Date: Jul 2006
Location: Ft.Lauderdale, FL
Posts: 879
Likes: 0
Received 0 Likes on 0 Posts
Default

anyone know what size primaries these have?
Old 06-30-2009, 09:34 PM
  #15  
TECH Senior Member
Thread Starter
iTrader: (27)
 
GMCtrk's Avatar
 
Join Date: Jul 2004
Location: Dallas
Posts: 12,275
Received 17 Likes on 17 Posts
Default

they're 1 3/4" primaries with a 2.5" collector. I ran them and they had the same SOTP as the pacesetters.
Old 06-30-2009, 09:43 PM
  #16  
TECH Junkie
iTrader: (8)
 
truckmann's Avatar
 
Join Date: Jul 2006
Location: OK
Posts: 3,895
Likes: 0
Received 0 Likes on 0 Posts
Default

I have the old hump ones and the hump doesn't bother me that much, but what I had to do to get them to fit past the front driveshaft isn't pretty. If I had some cash and found something that I'm sure would fit past the front driveshaft I would buy something else. They do seem to be a decent improvement over stock though.

As far as the resonators go I wouldn't count on them decreasing the sound much as they are just a straight through design with no baffles. I have a fair amount of drone with mine and a magnaflow catback, but I have gotten used to it and it doesn't bother me much anymore. Pic of the inside of one of the resonators on mine.

Old 06-30-2009, 10:47 PM
  #17  
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
1slow01Z71's Avatar
 
Join Date: Oct 2004
Location: Austin, TX
Posts: 23,204
Likes: 0
Received 4 Likes on 4 Posts
Default

Wonder if the new design clear the front shaft any better, IIRC these worked on a lot of the SSS guys trucks and the driveshaft is in the same place
Old 07-03-2009, 02:18 AM
  #18  
PT's Slowest Truck
iTrader: (19)
 
budhayes3's Avatar
 
Join Date: Apr 2004
Location: Hackensack, NJ
Posts: 17,863
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by 007gmc
anyone know if these are any different?

http://cgi.ebay.com/ebaymotors/OBX-H...5%7C240%3A1318
According to the item descriptions, those are for the 6.2 and the first ones listed are for all except the 6.2
Old 07-03-2009, 11:12 AM
  #19  
TECH Fanatic
iTrader: (11)
 
cwalker2006's Avatar
 
Join Date: Apr 2007
Location: dumas, texas
Posts: 1,183
Likes: 0
Received 1 Like on 1 Post
Default

why are there so many o2 bungs? seems like there is one extra, unless the nnbs trucks have more sensors...
Old 07-03-2009, 06:19 PM
  #20  
TECH Enthusiast
iTrader: (1)
 
0235SS93's Avatar
 
Join Date: Nov 2007
Posts: 673
Received 3 Likes on 3 Posts
Default

Idk the reasoning for the extra bungs, but it sure made tuning with a wideband easier! I just made some "plugs" out of old bad sensors I had lying around...


Quick Reply: check out the new OBX headers



All times are GMT -5. The time now is 10:51 AM.