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Long tube headers for my 02 WS6

This is a discussion on Long tube headers for my 02 WS6 within the External Engine forums, part of the LSx Technical Help Section category; Has anyone got dyno numbers for before and after a header swap? I have been thinking about installing a set ...

  1. #1
    Member BADBLUE02's Avatar
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    2002 WS6 Trans Am

    Long tube headers for my 02 WS6

    Has anyone got dyno numbers for before and after a header swap? I have been thinking about installing a set of headers on my 02 WS6. Several people have said that since they changed the exhaust manifolds in 2000 you won't see the numbers that you would in the 98 and 99's.

  2. #2
    I like the way yew tawlk. Ric's Avatar
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    2000 T/A WS6

    They're probbly referring to shorty headers. The only advantage with them is your wallet will be lighter, making you run about .00000837 seconds faster at the strip. Yes, they help the early LS1s a tiny bit, and yes GM improved the stock manifolds in 2000-up models. But you'll still free up about 20-25 hp with a set of LTs and a good tuning.

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    Quote Originally Posted by Ric
    They're probbly referring to shorty headers. The only advantage with them is your wallet will be lighter, making you run about .00000837 seconds faster at the strip. Yes, they help the early LS1s a tiny bit, and yes GM improved the stock manifolds in 2000-up models. But you'll still free up about 20-25 hp with a set of LTs and a good tuning.
    ? what about the cat vs catless I here different stores. No cats gain HP but lose tourk . Getting headers also come spring. (street car)

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    member since may 2000 nhraformula's Avatar
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    2000 nhra edition formula

    on my 2000 formula, i gained 30 rwhp from long tube headers.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  5. #5
    ruff ruff rotwiler's Avatar
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    LT's, 3400 stall, FIPK,CB
    2002 Z28

    I gained 29 h.p and 14TQ with FLP LT's with cats on my 02 Z28 A4. After the install I could feel the power, then the power faded, so had to get the A/F correct on a dyno. Runs great now and sound is much better. I run with cats on, hated the thumpy machine gun sound without cats. I could see another 5 h.p gain if I take the cats off, but it isn't worth it to me with the sound...plus it was so loud with them off I was a cop magnet.
    Last edited by rotwiler; 01-25-2006 at 11:32 AM.

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    primer
    1973 Camaro

    '02 WS6 here. Numbers in signature.
    '73 Plain Jane Camaro, Gen III, T56
    '02 WS6, M6
    All gone but not forgotten

  7. #7
    Member BADBLUE02's Avatar
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    Thanks for the info. I'm going to buy a set and see for myself.

  8. #8
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    1999 WS.6.

    Gained 13 RWHP and 26 ft/pounds with LS6 intake and SLP longtubes.
    Would have been more....but I was on the stock tune. I was actually very disappointed.
    Until I tossed in a cam.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

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