+ Reply to Thread
Results 1 to 5 of 5

Thread: 03 5.3 into 1990 C1500 2wd Pickup

Hybrid View

  1. #1
    Join Date
    Apr 2011
    Location
    Dallas, North Carolina
    Posts
    18

    03 5.3 into 1990 C1500 2wd Pickup

    okay i have a 1990 chevorlet silverado that has an old worn out 5.7 tbi motor in it.
    i recently bought a 2003 5.3 motor complete with all accessories and wiring harness and computer. i am wanting to keep my 700r4 trans and run it cause i love that transmission. they are so easy to rebuild. my problem is i am completely lost when it comes to wiring anything and i cant seem to find the motor mounts anywhere to fit that motor in my truck. any info or clues on how to fix the harness or anywhere i could get one would be greatly appreciated

  2. #2
    Join Date
    Feb 2011
    Location
    Barnwell, SC
    Posts
    471
    OBS to LSX sticky This should answer a lot of your questions.
    99 Silverado 4.8l : Soon to be 80E swapped, then 6.0 swapped, ......
    05 Yukon Denali 6.0l : Nelson Performance Tune, ......
    8X S10 Blazer on a 8X 3/4 ton frame : 5.3l swapped, Nelson Performance tune, Schoenfeld LT's, 226/226 .598/.598 112, TH350, planetary doubler, NP 205, locker, spool, 38's, ......
    Quote Originally Posted by blacksss46 View Post
    couldn't agree more. its like boobs you'll get a C and end up wanting a D...just get the bigger one and be happy

  3. #3
    Join Date
    Jan 2011
    Location
    Mcalester,okla.
    Posts
    565
    4l60-65 have same guts as 700r4. And less valvebody problems to deal with.

  4. #4
    Join Date
    Dec 2004
    Location
    San Antonio, TX Area
    Posts
    1,741
    I used these, http://carshop.carshopinc.com/produc...id/74328/LS1GM, but now there are a lot more available. These are gaining in popularity, http://dirtydingo.com/store/Dirty-Di...323/index.html
    Or look here, lots more. google search ls1 engine adapters
    Also, just go ahead and run the 60e or 80e it'll just make things easier.
    Call them for your harness and pcm tuning. http://www.nelsonperformance.com/
    "ALisSa1 Silverado"
    1990 Chevrolet RCSB 2002 Chevrolet Camaro LS1/4L60E
    Scrimpin Ain't Easy
    ( . Y . )


  5. #5
    Join Date
    Apr 2011
    Location
    Dallas, North Carolina
    Posts
    18
    Thank you all I will check all this stuff out and get back to everyone like I said thank you so much

+ Reply to Thread

Posting Permissions

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