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Thread: My 1999 OBS C1500 LQ9 6.0 LS Swap

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  1. #1
    Join Date
    Dec 2004
    Location
    San Antonio, TX Area
    Posts
    1,741
    Truck sounds awesome. You do good work. I like the mod for the trans cooler. What method did you use for the water temp sending unit? The grinder or the lathe? What size tap did you use?
    Quote Originally Posted by ChevyMan90 View Post
    Modified the water temp sending unit to fit the LS head.
    "ALisSa1 Silverado"
    1990 Chevrolet RCSB 2002 Chevrolet Camaro LS1/4L60E
    Scrimpin Ain't Easy
    ( . Y . )


  2. #2
    Thanks man! For the water temp sending unit I used a lathe to turn it down. The new threads to fit the LS head are an M12 x 1.5. Some people drill and tap the head to make the sensor fit but couldn't see doing that on a brand new set of heads.

  3. #3
    Join Date
    Aug 2012
    Location
    Portland, OR
    Posts
    81
    That sounds soooo good! What did you do for the throttle cable bracket? Fabbed one up?

  4. #4
    Thanks! Yea I modified the 99-02 throttle cable bracket and welded another piece to it so that I could get 2 bolts holding it down.

  5. #5
    Join Date
    Aug 2012
    Location
    Portland, OR
    Posts
    81
    Ok cool, I was considering doing the same thing. Thanks for the info!

  6. #6
    Join Date
    Jul 2008
    Location
    San Antonio
    Posts
    43
    Thanks for sharing! This is exactly what I want to do with my '96 when funds and time allows!
    1996 GMC Sierra RCSB
    4.3L V6 - 4L60E - 15" stock aluminums - 3.42s - slow weekend warrior
    2004 Chevy Tahoe LT
    5.3L V8 - 4L60E - 17" stock aluminums - 3.73s - less slow daily driver

  7. #7
    No problem! I enjoy seeing all the other builds on this forum so I figured I'd share mine. I made a radiator/E-fan mounting bracket a few weeks back and had it powder coated black.
    I also did the exhaust a few weeks ago. It came out awesome, but was not easy doing it on the ground! A lift would've made it 10x easier but its done now and I'm very happy with the way it sounds! Its done with all mandrel bent tubing that I bought and fabbed up using 45's and 90's. Dual 3" with an H-Pipe into two 14x4x9 Magnaflow mufflers. Its got turndowns on it for now. Happy with the sound for sure! Only real thing left now is to clean up the wiring. On to the pics!






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