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Thread: typical cost of 5.3 swap in obs?

  1. #11
    Join Date
    Oct 2003
    Posts
    473

    LS Engine Install...

    Basically, realistically, its not practical to install an LS engine into an OBS truck, UNLESS...its your baby, and you plan on keeping it for a number of years. It can get costly due to the extras. Its not a plug and play, by any means. Its much easier to rebuild or replace what engine you have. BUT...the all-around performance of an LS engine is night & day when completed.

  2. #12
    Join Date
    Nov 2009
    Location
    Fort Smith, Arkansas
    Posts
    496
    Quote Originally Posted by LS1GMCTruck View Post
    Basically, realistically, its not practical to install an LS engine into an OBS truck, UNLESS...its your baby, and you plan on keeping it for a number of years. It can get costly due to the extras. Its not a plug and play, by any means. Its much easier to rebuild or replace what engine you have. BUT...the all-around performance of an LS engine is night & day when completed.
    Owning an OBS isn't practical period. They don't have or gain good resale value no matter what you do to them. I don't think anyone who owns an OBS (especially those doing a motor swap) are thinking practical. If you want practical go buy a geo metro.
    Last edited by flattopwill; 06-05-2010 at 08:58 PM.
    '91 2WD RCSB
    5.3l L59 DBW
    4L80E
    TR220 cam
    RevMax 2800rpm stall converter
    Schoenfeld LT Headers
    Nelson tuned

    My Truck Video - http://www.youtube.com/watch?v=Rw9y1...&feature=email

  3. #13
    Join Date
    Oct 2003
    Posts
    473
    Quote Originally Posted by flattopwill View Post
    Owning an OBS isn't practical period. They don't have or gain good resale value no matter what you do to them. I don't think anyone who owns an OBS (especially those doing a motor swap) are thinking practical. If you want practical go buy a geo metro.
    I agree 100%. Even though we all love our LS conversions & would'nt have it any other way, anyone that hasn't done one, but is going to do one, really doesn't know yet, how many little(and sometimes costly) extra's come into play, that you won't see in a conventional engine repower. So many new LS conversion guys come on here to proudly(rightfully so) tell us, or show us, their LS progress, an say: "Well...I started this project 6 months ago, and I'm finally just about to fire this bad-boy up". lol Cracks me up...cause I know exactly what they went through to get it to that point. And chances are, they STILL have to install exhaust, intake snorkel, gauge wiring, etc, lol. All this, when the old 305 engine could have been rebuilt/replaced in a week-end, lol. But...Is it worth it? Oh Yeah! It sure is.

  4. #14
    Join Date
    Dec 2004
    Location
    San Antonio, TX Area
    Posts
    1,741
    I love my swap and would do it again.
    "ALisSa1 Silverado"
    1990 Chevrolet RCSB 2002 Chevrolet Camaro LS1/4L60E
    Scrimpin Ain't Easy
    ( . Y . )


  5. #15
    Join Date
    Oct 2003
    Posts
    473
    flattopwill...I listened to your video & like the sound of your exhaust system. What exactly does it consist of? Thanks

  6. #16
    Join Date
    Nov 2009
    Location
    Fort Smith, Arkansas
    Posts
    496
    It is what's in my sig with dual 2.5" pipe coming off the headers into a Y then 3" pipe into a single in dual out Flowmaster with turn downs under the front of the bed. I love how it sounds as do most but if you are looking for quiet don't go this route (I remembered your earlier post about mufflers). It's not as loud as say a "bullet" style muffler but still pretty loud and resonance is horrible from 1500-1900rpm. Also, I think this muffler slightly disguises the chop of the cam. Other wise, I love it.
    '91 2WD RCSB
    5.3l L59 DBW
    4L80E
    TR220 cam
    RevMax 2800rpm stall converter
    Schoenfeld LT Headers
    Nelson tuned

    My Truck Video - http://www.youtube.com/watch?v=Rw9y1...&feature=email

  7. #17
    Join Date
    Aug 2007
    Location
    Gramercy
    Posts
    945
    you dont wanna know what i have tied into my swap...

    i recalled parts that i forgot, such as vette servos, billet 4th gear servo and biller cover. i had to buy a starter/ALT/powersteering bracket.

    i have atleast 8k in my swap
    2008 GMC CCSB 6.2/6L80e swap
    Gen IV 5.3/60e swap 1994 ecsb W/T

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