View Poll Results: Is open headers worth the effort?

Voters
42. You may not vote on this poll
  • yes

    10 23.81%
  • No

    18 42.86%
  • depends

    14 33.33%
Results 1 to 17 of 17

1/4 miler racing

This is a discussion on 1/4 miler racing within the Drag Racing forums, part of the Racing Forums category; I am going racing this weekend and still can decide if i should run open headers or not so this ...

  1. #1
    Junior Member
    Join Date
    May 2006
    Location
    minneasota
    Age
    32
    Posts
    11

    black
    2001 Trans am ws6

    1/4 miler racing

    I am going racing this weekend and still can decide if i should run open headers or not so this poll will decide thanks for the feed back.


    ~01 trans am ws6 black
    ~bore 10 over
    ~proformance cam
    ~dynatech headers
    ~3inch Flow master cat back system

  2. #2
    Member jmhvenom's Avatar
    Join Date
    Oct 2005
    Location
    Cincinnati, OH
    Age
    32
    Posts
    823

    Silver
    2002 Z28

    define what you mean by effort? If you are going to take your whole catback off then its not. but if you want to spend 50 dollars and have a cutout welded in then yes, it would be worth it.

  3. #3
    Senior Member Zboner's Avatar
    Join Date
    Aug 2005
    Location
    cincinnati/northern ky
    Age
    31
    Posts
    9,045

    Black
    99 SS

    junk that C/B

  4. #4
    Senior Member 02z28ls1's Avatar
    Join Date
    Sep 2005
    Location
    near St. Louis
    Posts
    1,205

    navy blue
    2002 Z-28 Camaro M6

    Open headers might help upper rpm power -but will kill off low rpm power. Since you have to launch at lower rpm with most of these cars (2-3,000) you will need the broader power band of the full exhaust. Just my guess without knowing everything about what you're doing.

  5. #5
    Member 98Z-28Camaro's Avatar
    Join Date
    Nov 2005
    Location
    Oklahoma City
    Age
    32
    Posts
    164

    black
    1998 Z-28 Camaro

    Install a cutout. I took off my flowmaster catback and installed a 12-inch glass pack that dumps right before the rear axle and it sounds so much better and runs a heck of a lot harder. It sounds so much better.
    Last edited by 98Z-28Camaro; 06-29-2006 at 05:34 PM. Reason: Repeated myself
    Black 98 Z-28, whisper air lid, ported polished descreened maf, slp smooth bellow, modified tb, 04 gto plug wires, ngk TR6 plugs, Megan underdrive pulley, cold fusion nitrous kit, k&n, removed cats, glass pack , casper o2 simulators, 3.73 gears, Burnt up 4l-60e, drilled and slotted rotors,

  6. #6
    Senior Member SeVeReDiStOrTiOn's Avatar
    Join Date
    Aug 2005
    Location
    Roseville, CA
    Posts
    8,164

    05 Wrangler
    00 Z28 sold :-(

    between flows and open headers i'd def go open...flowmasters flow like duece

  7. #7
    Impounded x-40oz-x's Avatar
    Join Date
    Aug 2005
    Location
    Canada
    Posts
    1,287
    1981 g-Body

    Throw the Flowmaster in the trash and buy a good catback.
    Last edited by x-40oz-x; 06-28-2006 at 08:38 PM.

  8. #8
    Junior Member
    Join Date
    Jul 2006
    Location
    Lubbock, TX
    Posts
    13
    def not worth the effort

  9. #9
    Junior Member
    Join Date
    Jul 2006
    Location
    Possum Squat, Ky
    Age
    61
    Posts
    24

    '02 blue, '85 black&gold
    02 Firehawk #723,85 T/A

    Made the mistake of installing my 2&half'' cutouts in my cat replacement pipes. Think reversion caused a miss in first gear that sounded like a stutter box! Too close to the front o2 sensors. I put a 4'' system on and dont worry about the cutouts anymore but, would install an elect. dump before going over the axle on a 3' system.

  10. #10
    member since may 2000 nhraformula's Avatar
    Join Date
    Dec 2002
    Location
    n/w chicago
    Age
    47
    Posts
    6,933

    black
    2000 nhra edition formula

    Quote Originally Posted by JEF View Post
    Made the mistake of installing my 2&half'' cutouts in my cat replacement pipes. Think reversion caused a miss in first gear that sounded like a stutter box! Too close to the front o2 sensors. I put a 4'' system on and dont worry about the cutouts anymore but, would install an elect. dump before going over the axle on a 3' system.
    a 4 inch exhaust is overkill unless youre making silly horsepower.
    adding a dump is a waste of time.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  11. #11
    Junior Member
    Join Date
    Jul 2006
    Location
    Possum Squat, Ky
    Age
    61
    Posts
    24

    '02 blue, '85 black&gold
    02 Firehawk #723,85 T/A

    I have lofty goals. Do u run cats @ the track? Mine runs quicker without. Muffler when racing? Not me. Who needs the backpressure? I grafted a 12" by 4" pipe to the SLP 3" Y pipe and run it open. No exhaust past that point while racing and no codes. There's alot of volume @ 6 grand.
    I trailer to the track. But if I didn't... cutout4me.
    On the street with full exhaust (cats, over the axle and DynoMax 4" Race Muff) the sound is much sweeter and satisfying than the stock SLP dual dual.
    Have u read the cutout article that IU has about cutouts?

  12. #12
    Member 98Z-28Camaro's Avatar
    Join Date
    Nov 2005
    Location
    Oklahoma City
    Age
    32
    Posts
    164

    black
    1998 Z-28 Camaro

    Quote Originally Posted by nhraformula View Post
    a 4 inch exhaust is overkill unless youre making silly horsepower.
    adding a dump is a waste of time.
    I agree on the 4 inch but disagree on the dump. The dump made quite a bit more power and torque for myself.

  13. #13
    Junior Member
    Join Date
    Jun 2006
    Location
    nebraska
    Age
    30
    Posts
    20

    white
    2002 camaro z28

    my bodys ls1 has flow masters and a cut out. he had i dynoed and he got an extra 11 horse at the rear wheels if its that import for 11 horse than yes

  14. #14
    Senior Member ss~zoso~ss's Avatar
    Join Date
    Dec 2004
    Location
    )
    Posts
    9,128

    SS: NBM, tan top
    1998-SS, 2010 Jetta TDI

    post up your times.......

  15. #15
    Madeche Vision...soon The Scientist's Avatar
    Join Date
    Feb 2006
    Location
    Galveston, TX
    Age
    38
    Posts
    328

    NBM
    '98 Ram Air Formula

    I gained 18 hp with my cutout open compared to my old Flowmaster. I didn't believe it but I have the dyno sheet to prove. That gain was at peak in the high RPM range which is where you are at most of the time in the 1/4 mile.

  16. #16
    no more 4th gen secondgearscratch's Avatar
    Join Date
    Jun 2006
    Location
    St. Louis, Missouri
    Age
    29
    Posts
    2,463

    Pewter
    2000 z28

    Quote Originally Posted by nhraformula View Post
    a 4 inch exhaust is overkill unless youre making silly horsepower.
    adding a dump is a waste of time.
    +1 im with ya on that. hell, if youre not making a certain number 3 inch can cause some power loss.....not much though.

  17. #17
    Senior Member BLKCLOUD's Avatar
    Join Date
    Jan 2007
    Location
    Knoxville, TN
    Posts
    1,100

    B2300 (Fluffy) Retired
    Plain-Jane Dodge Truck

    Go to the track with closed exhaust. Make a couple of passes. Record ET, conditions, etc. Open the exhaust. Make a couple of passes. Record ET, conditios, etc.

    Or listen to all the people here and get 10 different opinions - 9 of them obviously wrong.

    Good luck.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Racing a 911
    By Ramairgod84 in forum Kill Stories
    Replies: 20
    Last Post: 01-22-2010, 08:07 AM
  2. racing a z4
    By vonskeezy28 in forum Kill Stories
    Replies: 93
    Last Post: 01-16-2010, 03:18 PM
  3. 2009 Top Speed Challenge - The 1-Miler
    By Ed Blown Vert in forum Almost Anything Goes
    Replies: 0
    Last Post: 07-14-2009, 02:20 AM
  4. Pa Racing
    By ssms17607 in forum Suspension and Handling
    Replies: 3
    Last Post: 03-01-2007, 08:00 AM
  5. TR racing cam 227/224 .569/.563 114
    By TwistedArticSS01 in forum Camaro / SS
    Replies: 0
    Last Post: 05-10-2006, 07:42 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •