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Thread: ls3 into obs crew cab

  1. #1
    Join Date
    Feb 2012
    Posts
    108

    ls3 into obs crew cab

    hey yall , I been shearching about this swap for a couple of months. i decided to swap an ls3 into my truck. i got parts coming in now but im still hoping i can find a set 0f 1 7/8 headers that will fit this swap . has any of you guys had tried 2000+ f body long tubes

  2. #2
    Join Date
    Sep 2008
    Location
    Arizona/Utah
    Posts
    3,955
    The only ones I have seen made to work are pacesetters and schnofields, but good luck and I am sure you can find something better for such a sick build.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  3. #3
    Join Date
    Aug 2008
    Location
    mansfield texas
    Posts
    3,520
    Quote Originally Posted by chvz99 View Post
    hey yall , I been shearching about this swap for a couple of months. i decided to swap an ls3 into my truck. i got parts coming in now but im still hoping i can find a set 0f 1 7/8 headers that will fit this swap . has any of you guys had tried 2000+ f body long tubes
    Hit up lsxps he just did a ls3 in a 92ish ext cab im sufe he can fill u in on what headers to go with... I know it has schnofields tho...

  4. #4
    Join Date
    Jan 2012
    Location
    Montana
    Posts
    30
    2 or 4wd?

    I've been looking for my 88, and it's been impossible for a 4wd. Seems like everyone uses schoenfields for 2wd's.
    88 RCLB: LS swap in progress
    00 CCLB
    03 Yukon Denali: Wife's "soccer mom mobile"

  5. #5
    Join Date
    Jun 2011
    Posts
    4
    I got some from Street & Performance for my 86 K5 swap.
    IMG_1196.jpg
    IMG_1220.jpg
    IMG_1219.jpg
    1986 K5 Blazer 5.3L ,4L60E , NP205

  6. #6
    Join Date
    Feb 2012
    Posts
    108
    i know its a long shot for the longtubes 1 7/8s does anyone knows how long the ceramic coating on schoenfelds lasts. 1999 obscc 2wd

  7. #7
    Join Date
    Feb 2012
    Posts
    108
    Photo0103_1.jpghey guys heres where the engine is going into

  8. #8
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    Very nice. I'd love to have one of those.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  9. #9
    Join Date
    Feb 2012
    Posts
    108
    what you think should i lowered on 24s or keep it like itis

  10. #10
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    I love a well executed lowering job on an OBS truck. Make it practical for how you use it. 4/6 isn't too great if you're pulling trailers unless you have airbags or something to keep it real. A four link on a 4/6 is awesome.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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